TLE6251D Data Sheet (1.4 MB, EN)

TLE6251D
High Speed CAN-Transceiver with Bus Wake-up
Data Sheet
Rev. 1.0, 2012-07-27
Automotive Power
TLE6251D
Table of Contents
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4
4.1
4.2
4.3
4.4
4.5
4.6
4.7
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
High Speed CAN Physical Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Normal-operating Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Stand-by Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Power-down State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Remote Wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Voltage Adaption to the Microcontroller Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
Fail Safe Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Short-circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unconnected Logical Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TxD Time-out Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Undervoltage Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overtemperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Mode Changes during CAN Bus Failures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Delay Time for Mode Change . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
11
11
11
12
13
13
15
6
6.1
6.2
6.3
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16
16
17
17
7
7.1
7.2
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Functional Device Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8
8.1
8.2
8.3
Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ESD Immunity According to IEC61000-4-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Application Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Data Sheet
2
22
22
23
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Rev. 1.0, 2012-07-27
High Speed CAN-Transceiver with Bus Wake-up
1
TLE6251D
Overview
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Fully compatible with ISO 11898-2 / -5
Wide common mode range for electromagnetic immunity (EMI)
Very low electromagnetic emission (EME)
Excellent ESD immunity
Extended supply range on VCC and VIO
VIO input for voltage adaption to the microcontroller supply
CAN short-circuit proof to ground, battery and VCC
TxD time-out function
Low CAN bus leakage current in power-down state
Overtemperature protection
Protected against automotive transients
CAN data transmission rate up to 1 Mbps
Stand-by mode with remote wake-up function
Wake-up detection by signal change on the RxD output
Power Supply VCC can be turned off in stand-by mode
Green Product (RoHS compliant)
AEC Qualified
PG-DSO-8-16
Description
The TLE6251D is a transceiver designed for CAN networks in automotive and industrial applications. As an
interface between the physical bus layer and the CAN protocol controller, the TLE6251D drives the signals to the
bus and protects the microcontroller against interferences generated within the network. Based on the high
symmetry of the CANH and CANL signals, the TLE6251D provides a very low level of electromagnetic emission
(EME) within a wide frequency range. The TLE6251D is integrated into a RoHS compliant PG-DSO-8-16 package
and fulfills or exceeds the requirements of the ISO11898-2 / -5.
The TLE6251D allows very low quiescent currents in stand-by mode while the device is still able to wake-up by a
bus signal on the CAN bus. Based on the very low leakage currents on the CAN bus interface the TLE6251D
provides an excellent passive behavior in power-down state. These and other features make the TLE6251D
especially suitable for mixed supply CAN networks.
Based on the Infineon Smart Power Technology SPT, the TLE6251D provides excellent ESD immunity together
with a very high electromagnetic immunity (EMI). The TLE6251D and the Infineon SPT technology are AEC
qualified and tailored to withstand the harsh conditions of the Automotive Environment.
Two different operation modes, additional fail-safe features like a TxD time-out, and the optimized output slew
rates on the CANH and CANL signals make the TLE6251D the ideal choice for large CAN networks with high data
transmission rates.
Type
Package
Marking
TLE6251D
PG-DSO-8-16
6251D
Data Sheet
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Rev. 1.0, 2012-07-27
TLE6251D
Block Diagram
2
Block Diagram
3
5
VCC
VIO
Transmitter
CANH
1
7
Driver
Transmitter
CANL
6
TxD
Timeout
TempProtection
8
Mode
Control
STB
Normal Mode Receiver
*
4
Mux
*
Receive Unit
RxD
Wake-Logic
& Filter
Low Power Receiver
VIO
VCC/2 =
GND 2
Figure 1
Data Sheet
Block diagram
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Rev. 1.0, 2012-07-27
TLE6251D
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
TxD
1
8
STB
GND
2
7
CANH
VCC
3
6
CANL
RxD
4
5
VIO
Figure 2
Pin configuration
3.2
Pin Definitions
Table 1
Pin Definitions and Functions
Pin No.
Symbol
Function
1
TxD
Transmit Data Input;
Internal pull-up to VIO, “low” for “dominant” state.
2
GND
Ground
3
VCC
Transceiver Supply Voltage;
100 nF decoupling capacitor to GND required,
VCC can be turned off in stand-by mode.
4
RxD
Receive Data Output;
“low” in “dominant” state.
5
VIO
Digital Supply Voltage Input;
supply voltage input to adapt the logical input and output voltage levels of the
transceiver to the microcontroller supply.
Supply for the low-power receiver.
100 nF decoupling capacitor to GND required.
6
CANL
CAN Bus Low level I/O;
“low” in “dominant” state.
7
CANH
CAN Bus High level I/O;
“high” in “dominant” state.
8
STB
Stand-by Input;
internal pull-up to VIO, “low” for normal-operating mode.
Data Sheet
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TLE6251D
Functional Description
4
Functional Description
CAN is a serial bus system that connects microcontrollers, sensors and actuators for real-time control applications.
The use of the Controller Area Network (abbreviated CAN) within road vehicles is described by the international
standard ISO 11898. According to the 7-layer OSI reference model, the physical layer of a CAN bus system
specifies the data transmission from one CAN node to all other available CAN nodes within the network. The
physical layer specification of a CAN bus system includes all electrical and mechanical specifications of a CAN
network. The CAN transceiver is part of the physical layer specification. Several different physical layer standards
of CAN networks have been developed in recent years. The TLE6251D is a High Speed CAN transceiver with a
dedicated bus wake-up function and defined by the international standard ISO 11898-2.
4.1
High Speed CAN Physical Layer
TxD
VIO
t
CAN_H
CAN_L
VCC
VIO
VCC
=
=
TxD
=
RxD =
CANH =
CANL =
VDIFF =
Digital supply
High Speed CAN
power supply
Input from the
microcontroller
Output to the
microcontroller
Voltage on the CANH
input/output
Voltage on the CANL
input/output
Differential voltage
between CANH and CANL
VDIFF = VCANH – VCANL
t
VDIFF
“dominant“
VDIFF = ISO Level “dominant“
“recessive“
VDIFF = ISO Level “recessive“
t
RxD
VIO
t
Figure 3
Data Sheet
High Speed CAN bus signals and logical signals
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Rev. 1.0, 2012-07-27
TLE6251D
Functional Description
The TLE6251D is a High Speed CAN transceiver, operating as an interface between the CAN controller and the
physical bus medium. A HS CAN network is a two-wire, differential network, which allows data transmission rates
up to 1 Mbps. The characteristics for a HS CAN network are the two signal states on the CAN bus: “dominant” and
“recessive” (see Figure 3).
The CANH and CANL pins are the interface to the CAN bus and both pins operate as an input and output. The
RxD and TxD pins are the interface to the microcontroller. The TxD pin is the serial data input from the CAN
controller, the RxD pin is the serial data output to the CAN controller. As shown in Figure 1, the HS CAN
transceiver TLE6251D includes a receiver and a transmitter unit, allowing the transceiver to send data to the bus
medium and monitor the data from the bus medium at the same time. The HS CAN transceiver TLE6251D
converts the serial data stream which is available on the transmit data input TxD, into a differential output signal
on the CAN bus, provided by the pins CANH and CANL. The receiver stage of the TLE6251D monitors the data
on the CAN bus and converts them to a serial, single-ended signal on the RxD output pin. A logical “low” signal
on the TxD pin creates a “dominant” signal on the CAN bus, followed by a logical “low” signal on the RxD pin (see
Figure 3). The feature, broadcasting data to the CAN bus and listening to the data traffic on the CAN bus
simultaneously is essential to support the bit-to-bit arbitration within CAN networks.
The voltage levels for HS CAN transceivers are defined by the ISO 11898-2 and the ISO 11898-5 standards.
Whether a data bit is “dominant” or “recessive” depends on the voltage difference between the CANH and CANL
pins: VDIFF = VCANH - VCANL.
In comparison with other differential network protocols, the amplitude of the differential signal on a CAN network
can only be higher than or equal to 0 V. To transmit a “dominant” signal to the CAN bus, the amplitude of the
differential signal VDIFF is higher than or equal to 1.5 V. To receive a “recessive” signal from the CAN bus, the
amplitude of the differential VDIFF is lower than or equal to 0.5 V.
“Partially-supplied” High Speed CAN networks are networks in which the CAN bus nodes of one common network
have different power supply conditions. Some nodes are connected to the common power supply, while other
nodes are disconnected from the power supply and in power-down state. Regardless of whether the CAN bus
subscriber is supplied or not, each subscriber connected to the common bus media must not interfere with the
communication. The TLE6251D is designed to support “partially-supplied” networks. In the power-down state, the
receiver input resistors are switched off and the transceiver input has a high resistance.
For permanently supplied ECUs, the HS CAN transceiver TLE6251D provides a stand-by mode. In stand-by
mode, the power consumption of the TLE6251D is optimized to a minimum, while the device is still able to
recognize wake-up patterns on the CAN bus and signal a wake-up event to the external microcontroller.
The voltage level on the digital input TxD and the digital output RxD is determined by the power supply level at the
VIO pin. Depending on the voltage level at the VIO pin, the signal levels on the logic pins (STB, TxD and RxD) are
compatible with microcontrollers having a 5 V or 3.3 V I/O supply. Usually, the VIO power supply of the transceiver
is connected to the same power supply as the I/O power supply of the microcontroller.
Data Sheet
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Rev. 1.0, 2012-07-27
TLE6251D
Functional Description
4.2
Modes of Operation
Two different modes of operation are available on the TLE6251D. Each mode has specific characteristics in terms
of quiescent current or data transmission. The digital input pin STB is used for the mode selection. Figure 4
illustrates the different mode changes depending on the status of the STB pin. After supplying VCC and VIO to the
HS CAN transceiver, the TLE6251D starts in stand-by mode. The internal pull-up resistor at the STB pin sets the
TLE6251D to stand-by mode by default. If the microcontroller is up and running, the TLE6251D can switch to any
operating mode within the time period for mode change tMODE.
VCC < VCC(UV)
start–up
supply VCC and
VIO
VIO < VIO(UV)
undervoltage
detection on VCC and
VIO
power-down
stand-by mode
STB = 1
STB = 0
STB = 1
normal-operating
mode
STB = 0
Figure 4
Mode of operation
The TLE6251D has 2 major modes of operation:
•
•
Stand-by mode
Normal-operating mode
Table 2
Modes of Operation
Mode
STB
Bus Bias
Comment
Normaloperating mode
“low”
VCC/2
The transmitter is active.
The normal mode receiver is active.
The low-power receiver is disabled.
Stand-by mode
VCC on
VIO on
“high”
GND
The transmitter is disabled.
The normal mode receiver is disabled.
The low-power receiver is active.
Stand-by mode
“high”
GND
The transmitter is disabled.
The normal mode receiver is disabled.
The low-power receiver is active.
Don’t care
Floating
The transmitter is disabled.
The normal mode receiver is disabled.
The low-power receiver is disabled.
VCC off
VIO on
Power-down
state
VCC off
VIO off
Data Sheet
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Rev. 1.0, 2012-07-27
TLE6251D
Functional Description
4.3
Normal-operating Mode
In the normal-operating mode, the HS CAN transceiver TLE6251D sends the serial data stream on the TxD pin to
the CAN bus. The data on the CAN bus is displayed at the RxD pin simultaneously. In normal-operating mode, all
functions of the TLE6251D are active:
•
•
•
•
•
•
The transmitter is active and drives data from the TxD to the CAN bus.
The receiver is active and provides the data from the CAN bus to the RxD pin.
The low-power receiver is disabled.
The bus basing is set to VCC/2.
The undervoltage monitoring on the power supply VCC and on the power supply VIO is active.
The overtemperature protection is active.
To enter the normal-operating mode, set the STB pin to logical “low” (see Table 2 or Figure 4). The STB pin has
an internal pull-up resistor to the power-supply VIO.
4.4
Stand-by Mode
Stand-by mode is an idle mode of the TLE6251D with optimized power consumption. In stand-by mode, the
TLE6251D can not send or receive any data. The normal mode receiver is switched off and only the low-power
receiver is active. An additional filter, implemented inside the low-power receiver ensures that only “dominant” and
“recessive” signals on the CAN bus, which are longer than the bus wake-up time tWU are indicated at the RxD
output pin.
•
•
•
•
•
•
•
•
•
•
The transmitter is disabled, and permanently “recessive”.
The input TxD is disabled.
The normal mode receiver is disabled.
The low-power receiver is active.
The RxD output is “high”, in case no wake-up signal on the CAN bus is detected (see Figure 5).
The RxD output toggles according to the wake-up signal on the CAN bus (see Figure 5).
The undervoltage monitoring on the power supply VCC is disabled.
The undervoltage monitoring on the power supply VIO is active.
The bus biasing is set to GND.
The overtemperature protection is not active.
To enter the stand-by mode, set the pin STB to logical “high” (see Table 2 or Figure 4). The STB pin has an
internal pull-up resistor to the power-supply VIO. In case the stand-by mode is not be used in the final application,
the STB pin needs to get connected to GND.
4.5
Power-down State
The power-down state means that the TLE6251D is not supplied. In the power-down state, the differential input
resistors of the receiver are switched off. The CANH and CANL bus interface of the TLE6251D acts as a highimpedance input with a very small leakage current. The high-ohmic input does not influence the “recessive” level
of the CAN network and allows an optimized EME performance of the entire CAN network.
Data Sheet
9
Rev. 1.0, 2012-07-27
TLE6251D
Functional Description
4.6
Remote Wake-up
The TLE6251D has a remote wake-up feature, also called bus wake-up feature. In stand-by mode, the low-power
receiver monitors the activity on the CAN bus and in case it detects a wake-up signal, the TLE6251D indicates the
wake-up signal on the RxD output pin.
While entering into stand-by mode by setting the STB pin to logical “high”, the RxD output pin is set to logical “high”,
regardless of the signal on the CAN bus. The low-power receiver of the TLE6251D requires a signal change from
“recessive” to “dominant” on the CAN bus before the RxD output is enabled and follows the signal on the CAN bus.
CAN bus signals, “dominant” or “recessive”, with a pulse width above the bus wake-up time t > tWU are indicated
on the RxD output pin (see Figure 5).
The wake-up logic is supplied by the power supply VIO (see Figure 1). In case the TLE6251D is in stand-by mode,
the power supply VCC can be turned off, while the TLE6251D is still able to detect the wake-up pattern on the CAN
bus.
t = tWU
t = tWU
t = tWU
t = tWU
CANH
CANL
t
VDIFF = CANH - CANL
VDIFF
t
RxD
t
VIO
STB
t
Figure 5
Wake-up pattern
4.7
Voltage Adaption to the Microcontroller Supply
The HS CAN transceiver TLE6251D has two different power supplies, VCC and VIO. The power supply VCC supplies
the transmitter and the normal mode receiver, the power supply VIO supplies the digital input and output buffers,
the low-power receiver and the wake-up logic. To adjust the digital input and output levels of the TLE6251D to the
I/O levels of the external microcontroller, the power supply VIO should be connected to the microcontroller pad
supply (see Figure 13).
Supplying the low-power receiver by the VIO pin allows to switch off the VCC supply in stand-by mode and leads to
an additional reduction of the quiescent current in stand-by mode.
Data Sheet
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TLE6251D
Fail Safe Functions
5
Fail Safe Functions
5.1
Short-circuit Protection
The CANH and CANL bus outputs are short-circuit proof, either against GND or a positive supply voltage. A
current limiting circuit protects the transceiver against damages. If the device heats up due to a continuous short
on the CANH or CANL, the internal overtemperature protection switches off the bus transmitter.
5.2
Unconnected Logical Pins
All logical input pins have an internal pull-up resistor to VIO. In case the VIO supply is activated and the logical pins
are open or floating, the TLE6251D enters the stand-by mode by default. In stand-by mode, the transmitter of the
TLE6251D is disabled, the bus bias is turned off and the input resistors of CANH and CANL are connected to GND.
The HS CAN transceiver TLE6251D will not influence the data on the CAN bus.
5.3
TxD Time-out Function
The TxD time-out feature protects the CAN bus against permanent blocking in case the logical signal on the TxD
pin is continuously “low”. A continuous “low” signal on the TxD pin can have its root cause in a locked-up
microcontroller or in a short on the printed circuit board, for example. In normal-operating mode, a logical “low”
signal on the TxD pin for the time t > tTxD enables the TxD time-out feature and the TLE6251D disables the
transmitter (see Figure 6). The receive unit is still active and the data on the bus continue to be monitored by the
RxD output pin.
t > tTxD
TxD time-out
CANH
CANL
TxD time-out released
t
TxD
t
RxD
t
Figure 6
TxD Time-out function
Figure 6 shows how the transmitter is deactivated and re-activated again. A permanent “low” signal on the TxD
input pin activates the TxD time-out function and deactivates the transmitter. To release the transmitter after a TxD
time-out event, the TLE6251D requires a signal change on the TxD input pin from logical “low” to logical “high”.
Data Sheet
11
Rev. 1.0, 2012-07-27
TLE6251D
Fail Safe Functions
5.4
Undervoltage Detection
The HS CAN Transceiver TLE6251D is provided with undervoltage detection on the power supply VCC and the
power supply VIO. Both undervoltage detection monitors are active in normal-operating mode. In stand-by mode
only the VIO undervoltage monitoring is active, the VCC undervoltage monitoring is disabled.
In case the power supply VCC or VIO drops below a voltage level where the transceiver TLE6251D cannot securely
send data to the bus or receive data from the bus, the undervoltage detection disables the data communication
(see Figure 7).
The transmitter and the receiver are disabled, but the bus biasing remains connected to VCC/2. With a falling VCC
supply, the “recessive” level of the CAN bus signal decreases respectively.
hysteresis
VCC(UV,H)
Supply voltage VCC
delay time undervoltage
tDelay(UV)
VCC undervoltage
monitor
VCC(UV)
STB=0
normal-operating
mode
communication blocked
hysteresis
VIO(UV,H)
normal-operating
mode1)
Supply voltage VIO
VIO undervoltage
monitor
VIO(UV)
delay time undervoltage
tDelay(UV)
STB=0
normal-operating
mode
communication blocked
normal-operating
mode1)
1)
Assuming the logical signal on the pin STB keeps its value during the undervoltage
event. In this case STB remains „low“.
Figure 7
Data Sheet
Undervoltage detection on VCC or VIO
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TLE6251D
Fail Safe Functions
5.5
Overtemperature Protection
The TLE6251D has an integrated overtemperature detection circuit to protect the TLE6251D against thermal
overstress of the transmitter. The overtemperature protection is active in normal-operating mode and disabled in
stand-by mode. In case of an overtemperature condition, the temperature sensor will disable the transmitter (see
Figure 1) while the transceiver remains in normal-operating mode.
After the device cools down the transmitter is activated again (see Figure 8). A hysteresis is implemented within
the temperature sensor.
Overtemperature event
TJSD
TJ
ΔT
Cool Down
(shut-down temperature)
switch-on transmitter
t
CANH
CANL
t
TxD
t
RxD
t
Figure 8
Overtemperature protection
5.6
Mode Changes during CAN Bus Failures
Failures on the CAN bus, like for example a short to the battery supply, might cause a permanent “dominant” signal
on the CAN bus and block the communication. Disregarding the signal on the CAN bus, the HS CAN transceiver
TLE6251D can change its operating mode from normal-operating mode to stand-by mode and vice versa.
While entering stand-by mode by setting the STB pin to logical “high”, the RxD output pin is set to logical “high”,
regardless if the CAN bus signal is “recessive” or “dominant”.
In stand-by mode the TLE6251D requires a mode change from “recessive” to “dominant” once, before the RxD
output follows the signals on the CAN bus. After detecting one signal change from “recessive” to “dominant” on
the CAN bus; a “recessive” CAN bus signal is indicated on the RxD output pin by a logical “high” signal and a
“dominant” CAN bus signal is indicated by a logical “low” signal, as long the pulse width of the CAN bus signals is
above the bus wake-up time t > tWU (see Figure 9).
Data Sheet
13
Rev. 1.0, 2012-07-27
TLE6251D
Fail Safe Functions
First change from „recessive“
to „dominant“
t = tWU
t = tWU
t = tWU
t = tWU
CANH
CANL
t
VDIFF = CANH - CANL
VDIFF
t
RxD
t
VIO
STB
t
normaloperating
mode
Figure 9
Data Sheet
stand-by mode
Change to stand-by mode during bus “dominant”
14
Rev. 1.0, 2012-07-27
TLE6251D
Fail Safe Functions
5.7
Delay Time for Mode Change
During the mode change from stand-by mode to normal-operating mode or vice versa, the internal receive unit
switches from the low-power receiver to the normal mode receiver and vice versa. In order to avoid any bit toggling
on the RxD output pin, the RxD output is set to logical “high” during the mode change for the time tMode (see
Figure 10) and is not reflecting the signal on the CAN bus.
normal-operating
mode
stand-by mode
normal-operating mode
VCAN
CANH
VCC/2
CANL
t
STB
t
VRxD
tMODE
Figure 10
Data Sheet
tMODE
t
Signal on the RxD pin during a mode change
15
Rev. 1.0, 2012-07-27
TLE6251D
General Product Characteristics
6
General Product Characteristics
6.1
Absolute Maximum Ratings
Table 3
Absolute Maximum Ratings Voltages, Currents and Temperatures1)
All voltages with respect to ground; positive current flowing into pin
(unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Max.
Unit
Remarks
Voltages
6.1.1
Supply voltage
VCC
-0.3
6.0
V
–
6.1.2
Logic supply voltage
-0.3
6.0
V
–
6.1.3
CANH DC voltage versus GND
-40
40
V
–
6.1.4
CANL DC voltage versus GND
VIO
VCANH
VCANL
-40
40
V
–
6.1.5
Differential voltage between CANH
and CANL
VCAN diff
-40
40
V
–
6.1.6
Logic voltages at logic input pins STB, VMax_in
TxD
-0.3
6.0
V
–
6.1.7
Logic voltages at logic output pin RxD VMax_Out
-0.3
VIO
V
–
Temperatures
6.1.8
Junction temperature
Tj
-40
150
°C
–
6.1.9
Storage temperature
TS
-55
150
°C
–
8
kV
HBM
(100pF via 1.5 kΩ)2)
2
kV
HBM
(100pF via 1.5 kΩ)2)
750
V
CDM3)
ESD Resistivity
6.1.10 ESD immunity at CANH, CANL
versus GND
CAN
6.1.11 ESD immunity at all other pins
VESD_HBM_ -2
VESD_HBM_ -8
All
6.1.12 ESD immunity to GND
VESD_CDM -750
1) Not subject to production test, specified by design
2) ESD susceptibility, Human Body Model “HBM” according to ANSI/ESDA/JEDEC JS-001
3) ESD susceptibility, Charge Device Model “CDM” according to EIA/JESD22-C101 or ESDA STM5.3.1
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
Data Sheet
16
Rev. 1.0, 2012-07-27
TLE6251D
General Product Characteristics
6.2
Functional Range
Table 4
Operating Range
Pos
Parameter
Symbol
Limit Values
Min.
Max.
Unit
Remarks
Supply Voltages
6.2.1
Transceiver supply voltage
VCC
4.5
5.5
V
–
6.2.2
Digital supply voltage
VIO
3.0
5.5
V
–
Tj
-40
150
°C
1)
Thermal Parameters
6.2.3
Junction temperature
1) Not subject to production test, specified by design.
Note: Within the functional range, the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the related electrical characteristics table.
6.3
Thermal Resistance
Note: This thermal data was generated in accordance with JEDEC JESD51 standards. For more information,
please visit www.jedec.org.
Thermal Resistance1)
Table 5
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
RthJA
–
130
–
K/W
2)
Thermal Resistances
6.3.1
Junction to ambient
Thermal Shutdown (junction temperature)
6.3.2
Thermal shutdown temperature
TJSD
150
175
200
°C
–
6.3.3
Thermal shutdown hyst.
ΔT
–
10
–
K
–
1) Not subject to production test, specified by design
2) The RthJA value specified is according to Jedec JESD51-2,-7 at natural convection on FR4 2s2p board; The product
(TLE6251D) was simulated on a 76.2 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70µm Cu, 2 x 35µm Cu).
Data Sheet
17
Rev. 1.0, 2012-07-27
TLE6251D
Electrical Characteristics
7
Electrical Characteristics
7.1
Functional Device Characteristics
Table 6
Electrical Characteristics
4.5 V < VCC < 5.5 V; 3.0 V < VIO < 5.5 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit Remarks
Current Consumption
7.1.1
Current consumption at VCC
normal-operating mode
ICC
–
2
6
mA
“recessive” state, VTxD = VIO,
STB = “low”;
7.1.2
Current consumption at VCC
normal-operating mode
ICC
–
35
60
mA
“dominant” state, VTxD = 0 V.
STB = “low”;
7.1.3
Current consumption at VIO normal-operating mode
IVIO
–
–
1
mA
STB = “low”;
7.1.4
Current consumption at VCC
stand-by mode
IVCC(STB) –
–
5
μA
VTxD = VIO, VCC = 5 V;
7.1.5
Current consumption at VIO
stand-by mode
IVIO(STB)
–
–
25
μA
VIO = 5 V, VTxD = VIO;
7.1.6
Current consumption at VIO
stand-by mode
IVIO(STB)
–
15
21
μA
VIO = 5 V, VTxD = VIO,
TJ = 40 °C;
4.0
4.3
V
rising edge;
1)
Supply Resets
7.1.7
7.1.8
VCC undervoltage monitor
VCC undervoltage monitor
VCC(UV) 3.8
VCC(UV,H) –
150
–
mV
2.0
3.0
V
rising edge;
hysteresis
VIO undervoltage monitor
7.1.10 VIO undervoltage monitor
7.1.9
VIO(UV) 1.2
VCC(UV,H) –
200
–
mV
1)
–
50
μs
1)
hysteresis
7.1.11 VCC and VIO undervoltage delay tDelay(UV) –
time
(see Figure 7);
Receiver Output: RxD
7.1.13 “High” level output current
IRD,H
–
-4
-2
mA
VRxD = VIO - 0,4 V,
VDIFF < 0.5 V;
7.1.14 “Low” level output current
IRD,L
2
4
–
mA
VRxD = 0.4 V,
VDIFF > 0.9 V;
7.1.15 “High” level input voltage
threshold
VTD,H
–
0.5 ×
0.7 ×
V
“recessive” state;
VIO
VIO
7.1.16 “Low” level input voltage
threshold
VTD,L
0.3 ×
0.4 ×
–
V
“dominant” state;
VIO
VIO
7.1.18 TxD pull-up resistance
RTD
10
25
50
kΩ
–
7.1.19 TxD input hysteresis
VHYS(TxD) –
800
–
mV
1)
7.1.20 TxD permanent dominant
disable time
tTxD
–
16
ms
–
Transmission Input: TxD
Data Sheet
4.5
18
Rev. 1.0, 2012-07-27
TLE6251D
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
4.5 V < VCC < 5.5 V; 3.0 V < VIO < 5.5 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
0.5 ×
0.7 ×
VIO
VIO
Unit Remarks
Stand-by Input: STB
7.1.21 “High” level input voltage
threshold
VSTB,H
–
7.1.22 “Low” level input voltage
threshold
VSTB,L
0.3 ×
0.4 ×
VIO
VIO
7.1.24 STB pull-up resistance
RSTB
10
25
V
stand-by mode;
–
V
normal-operating mode;
50
kΩ
–
VHYS(STB) –
200
–
mV
1)
7.1.26 Differential receiver threshold
“dominant”
VDIFF_D
–
0.75
0.9
V
normal-operating mode;
7.1.27 Differential receiver threshold
“recessive”
VDIFF_R
0.5
0.65
–
V
normal-operating mode;
7.1.28 Differential receiver threshold
“dominant”
VDIFF_D_ –
0.8
1.15
V
stand-by mode;
7.1.29 Differential receiver threshold
“recessive”
VDIFF_R_ 0.4
0.7
–
V
stand-by mode;
7.1.30 Common Mode Range
CMR
-12
–
12
V
VCC = 5 V;
7.1.31 Differential receiver hysteresis
Vdiff,hys
–
100
–
mV
1)
7.1.32 CANH, CANL input resistance
Ri
10
20
30
kΩ
“recessive” state;
7.1.33 Differential input resistance
Rdiff
20
40
60
kΩ
“recessive” state;
7.1.25 STB input hysteresis
Bus Receiver
STB
STB
normal-operating mode;
7.1.34 Input resistance deviation
between CANH and CANL
Δ Ri
-3
–
3
%
1)
7.1.35 Input capacitance CANH,
CANL versus GND
CIn
–
20
40
pF
1)
VTXD = VIO;
7.1.36 Differential input capacitance
CInDiff
–
10
20
pF
1)
VTXD = VIO;
VCANL/H
2.0
2.5
3.0
V
no load,
“recessive” state;
Bus Transmitter
7.1.37 CANL/CANH “recessive”
output voltage
VTxD = VIO,
normal-operating mode;
7.1.38 CANH, CANL “recessive”
output voltage difference
Vdiff
-500
–
50
mV
no load,
VTxD = VIO,
normal-operating mode;
7.1.39 CANH, CANL “recessive”
output voltage difference
Vdiff
-0.1
–
0.1
V
no load,
stand-by mode;
Data Sheet
19
Rev. 1.0, 2012-07-27
TLE6251D
Electrical Characteristics
Table 6
Electrical Characteristics (cont’d)
4.5 V < VCC < 5.5 V; 3.0 V < VIO < 5.5 V; RL = 60 Ω; -40 °C < Tj < 150 °C; all voltages with respect to ground;
positive current flowing into pin; unless otherwise specified.
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit Remarks
7.1.40 CANL “dominant” output
voltage
VCANL
0.5
–
2.25
V
VTxD = 0 V,
50 Ω < RL < 65 Ω,
normal-operating mode;
7.1.41 CANH “dominant” output
voltage
VCANH
2.75
–
4.5
V
VTxD = 0 V,
50 Ω < RL < 65 Ω,
normal-operating mode;
7.1.42 CANH, CANL “dominant”
output voltage difference
Vdiff = VCANH - VCANL
Vdiff
1.5
–
3.0
V
4.75 V < VCC < 5.25 V,
VTxD = 0 V,
50 Ω < RL < 65 Ω,
normal-operating mode;
7.1.43 Driver symmetry
VSYM = VCANH + VCANL
VSYM
4.5
5
5.5
V
VTXD = 0 V, VCC = 5 V,
7.1.44 CANL short-circuit current
ICANLsc
40
75
100
mA
VTXD = 0 V, VCC = 5 V, t < tTXD,
normal-operating mode;
VCANLshort = 18 V;
7.1.45 CANH short-circuit current
ICANHsc
-100
-75
-40
mA
VTXD = 0 V, VCC = 5 V, t < tTXD,
VCANHshort = 0 V;
7.1.46 Leakage current, CANH
ICANH,lk
-5
–
5
μA
VCC = 0 V, VCANH = VCANL,
0 V < VCANH < 5 V;
7.1.47 Leakage current, CANL
ICANL,lk
-5
–
5
μA
VCC = 0 V, VCANH = VCANL,
0 V < VCANL < 5 V;
Dynamic CAN-Transceiver Characteristics
7.1.50 Propagation delay
TxD-to-RxD “low”;
(“recessive to “dominant”)
td(L),TR
30
180
255
ns
CL = 100 pF,
VCC = 5 V, CRxD = 15 pF;
7.1.51 Propagation delay
TxD-to-RxD “high”;
(“dominant” to “recessive”)
td(H),TR
30
200
255
ns
CL = 100 pF,
VCC = 5 V, CRxD = 15 pF;
7.1.52 Propagation delay
TxD “low” to bus “dominant”
td(L),T
–
100
–
ns
1)
7.1.53 Propagation delay
TxD “high” to bus “recessive”
td(H),T
–
90
–
ns
1)
7.1.54 Propagation delay
bus “dominant” to RxD “low”
td(L),R
–
80
–
ns
1)
7.1.55 Propagation delay
bus “recessive” to RxD “high”
td(H),R
–
110
–
ns
1)
7.1.57 Bus wake-up time
tWU
0.5
3
5
μs
see Figure 5
7.1.58 Delay time for mode change
tMode
–
–
10
μs
2)
CL = 100 pF,
VCC = 5 V, CRxD = 15 pF;
CL = 100 pF,
VCC = 5 V, CRxD = 15 pF;
CL = 100 pF,
VCC = 5 V,CRxD = 15 pF;
CL = 100 pF;
VCC = 5 V; CRxD = 15 pF;
see Figure 10
1) Not subject to production test, specified by design
2) Delay time only tested for the mode change from stand-by mode to normal-operating mode. The delay time normaloperating mode to stand-by mode is not subject to production test and specified by design
Data Sheet
20
Rev. 1.0, 2012-07-27
TLE6251D
Electrical Characteristics
7.2
Diagrams
VIO
7
CANH
TxD
STB
CL
5
100 nF
1
8
RL
RxD
6
4
CRxD
CANL
GND
VCC
3
100 nF
2
Figure 11
Simplified test circuit
VTxD
VIO
GND
VDIFF
td(L),T
0,9V
0,5V
t
td(H),R
td(L),R
VRxD
t
td(H),T
td(L),TR
td(H),TR
VIO
0.7 x VIO
0.3 x VIO
GND
t
Figure 12
Data Sheet
Timing diagrams for dynamic characteristics
21
Rev. 1.0, 2012-07-27
TLE6251D
Application Information
8
Application Information
8.1
ESD Immunity According to IEC61000-4-2
Tests for ESD immunity according to IEC61000-4-2, “GUN test” (150 pF, 330 Ω), have been performed. The
results and test conditions are available in a separate test report.
Table 7
ESD immunity according to IEC61000-4-2
Test performed
Result
Unit
Remarks
Electrostatic discharge voltage at CANH and
CANL pins against GND
≥+9
kV
1)
Positive pulse
Electrostatic discharge voltage at pin CANH and ≤ − 9
CANL pins against GND
kV
1)
Negative pulse
1) ESD susceptibility “ESD GUN” according to GIFT / ICT paper: “EMC Evaluation of CAN Transceivers, version 03/02/ IEC
TS 62228“, section 4.3. (DIN EN61000-4-2)
Tested by external test facility (IBEE Zwickau, EMC test report no.: 08-04-12).
Data Sheet
22
Rev. 1.0, 2012-07-27
TLE6251D
Application Information
8.2
Application Example
VBAT
I
Q1
22 uF
TLE4476D
CANH
CANL
EN
100 nF
GND
100 nF
Q2
3
VCC
22 uF
100 nF
VIO
5
TLE6251D
8
STB
7
CANH
6
1
TxD
Out
4
RxD
CANL
VCC
Out
In
Microcontroller
e.g. XC22xx
Optional:
Common Mode Choke
GND
GND
2
I
Q1
22 uF
TLE4476D
EN
GND
100 nF
Q2
3
VCC
22 uF
VIO
TLE6251D
STB
7
CANH
6
TxD
RxD
CANL
Optional:
Common Mode Choke
5
8
1
4
100 nF
100 nF
VCC
Out
Out
In
Microcontroller
e.g. XC22xx
GND
GND
2
Figure 13
Data Sheet
Application circuit
23
Rev. 1.0, 2012-07-27
TLE6251D
Application Information
8.3
•
•
Further Application Information
Please contact us for information regarding the pin FMEA.
For further information you may visit: http://www.infineon.com/transceiver
Data Sheet
24
Rev. 1.0, 2012-07-27
TLE6251D
Package Outline
9
Package Outline
0.1
2)
0.41+0.1
-0.06
0.2
8
5
1
4
5 -0.2 1)
M
0.19 +0.06
4 -0.2
C
B
8 MAX.
1.27
1.75 MAX.
0.175 ±0.07
(1.45)
0.35 x 45˚
1)
0.64 ±0.25
6 ±0.2
A B 8x
0.2
M
C 8x
A
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Lead width can be 0.61 max. in dambar area
GPS01181
Figure 14
PG-DSO-8 (Plastic Dual Small Outline)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations, the device is available as a green product. Green products are RoHS compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
For further information on alternative packages, please visit our website:
http://www.infineon.com/packages.
Data Sheet
25
Dimensions in mm
Rev. 1.0, 2012-07-27
TLE6251D
Revision History
10
Revision History
Revision
Date
Changes
1.0
2012-07-27
Data Sheet created
Data Sheet
26
Rev. 1.0, 2012-07-27
Edition 2012-07-27
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2006 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
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characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
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For further information on technology, delivery terms and conditions and prices, please contact the nearest
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