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IL41050TA
High-Speed, Low-Power Isolated CAN Transceiver
Features
Functional Diagram
TxD
S
CANH
RxD
CANL
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•
•
•
•
•
•
•
•
•
IL41050TA
VDD2 (V)
TxD(1)
S
CANH
CANL
Bus State
RxD
4.75 to 5.25
↓
Low(2)
High
Low
Dominant
Low
4.75 to 5.25
X
High VDD2/2
VDD2/2
Recessive
High
VDD2/2
4.75 to 5.25
↑
X
VDD2/2
Recessive
High
<2V (no pwr)
X
X
0<V<2.5 0<V<2.5 Recessive
High
2<VDD2<4.75
>2V
X
0<V<2.5 0<V<2.5 Recessive
High
Table 1. Function table.
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•
•
•
•
•
•
•
•
•
•
180 ns typical loop delay
70 mA maximum bus-side dynamic supply current
12 mA maximum quiescent recessive supply current
1 Mbps
Fully compliant with the ISO 11898 CAN standard
−55°C to +125°C operating temperature
3 V to 5.5 V power supplies
>110-node fan-out
600 VRMS working voltage per VDE 0884
2500 VRMS isolation voltage per UL 1577
44000 year barrier life
±500 V CDM ESD
50 kV/μs typ.; 30 kV/μs min. common mode transient immunity
No carrier or clock for low emissions and EMI susceptibility
Silent mode to disable transmitter
Transmit data (TxD) dominant time-out function
Edge triggered, non-volatile input improves noise performance
Thermal shutdown protection
Bus power short-circuit protection
QSOP, 0.15" SOIC, or 0.3" True 8™ mm 16-pin packages
UL 1577 recognized; IEC 60747-5-5 (VDE 0884) certified
Applications
Notes:
1. TxD input is edge triggered: ↑ = Logic Lo to Hi, ↓ = Hi to Lo
2. Valid for logic state as described or open circuit
X = don’t care
•
•
•
•
Factory automation
Battery management systems
Noise-critical CAN
DeviceNet
Description
The IL41050TA is a galvanically isolated, CAN (Controller Area
Network) transceiver, designed as the interface between the CAN
protocol controller and the physical bus.
The wide-body version provides true 8 mm creepage. Narrow-body
and QSOP packages offer unprecedented miniaturization.
The IL41050 family provides isolated differential transmit
capability to the bus and isolated differential receive capability to
the CAN controller via NVE’s patented* IsoLoop spintronic Giant
Magnetoresistance (GMR) technology.
A unique ceramic/polymer composite barrier provides excellent
isolation and virtually unlimited barrier life.
Advanced features facilitate reliable bus operation. Unpowered
nodes do not disturb the bus, and a unique non-volatile
programmable power-up feature prevents unstable nodes. The
devices also have a hardware-selectable silent mode that disables
the transmitter.
Designed for harsh CAN and DeviceNet environments, IL41050TA
transceivers have transmit data dominant time-out, bus pin transient
protection, a rugged Charged Device Model ESD rating, thermal
shutdown protection, and short-circuit protection. Unique edgetriggered inputs improve noise performance.
REV. J
IsoLoop® is a registered trademark of NVE Corporation.
*U.S. Patent number 5,831,426; 6,300,617 and others.
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Absolute Maximum Ratings(1)(2)
Parameter
Storage temperature
Junction temperature
Ambient operating temperature
Symbol
TS
TJ
TA
Min.
−55
−55
−55
DC voltage at CANH and CANL pins
VCANH, VCANL
Supply voltage
Digital input voltage
Digital output voltage
DC voltage at VREF
Transient voltage at CANH or CANL
Electrostatic discharge at all pins
Electrostatic discharge at all pins
VDD1, VDD2
VTxD, VS
VRxD
VREF
Vtrt(CAN)
Vesd
Vesd
Typ.
Max.
150
150
125
Units
°C
°C
°C
−45
45
V
−0.3
−0.3
−0.3
−0.3
−150
−4000
−500
7
VDD + 0.3
VDD + 0.3
VDD + 0.3
150
4000
500
V
V
V
V
V
V
V
Max.
5.5
5.25
140
Units
−12
12
V
2.0
2.4
2.0
0
−8
−55
VDD1
VDD1
VDD2
0.8
8
125
1
V
mA
°C
μs
Max.
Units
Test Conditions
0 V< VDD2 < 5.25 V;
indefinite duration
Human body model
Machine model
Recommended Operating Conditions
Parameter
Supply voltage
Junction temperature
Input voltage at any bus terminal
(separately or common mode)
High-level digital input voltage(3)(4)
Low-level digital input voltage(3)(4)
Digital output current (RxD)
Ambient operating temperature
Digital input signal rise and fall times
Symbol
VDD1
VDD2
TJ
VCANH
VCANL
VIH
VIL
IOH
TA
tIR, tIF
Min.
3.0
4.75
−55
Typ.
Test Conditions
V
°C
V
VDD1 = 3.3 V
VDD1 = 5.0 V
VDD2 = 5.0 V
VDD1 = 3.3V to 5V
Insulation Specifications
Parameter
Creepage IL41050TA-1E (QSOP)
distance IL41050TA-3E (0.15" SOIC)
(external) IL41050TAE (0.3" SOIC)
Total barrier thickness (internal)
Barrier resistance
Barrier capacitance
Leakage current
Comparative Tracking Index
High voltage endurance
AC
(maximum barrier voltage
for indefinite life)
DC
Symbol
Min.
3.2
4.0
8.03
0.012
Typ.
mm
8.3
0.013
>1014
7
0.2
Per IEC 60601
≥175
1000
mm
Ω
pF
μARMS
V
VRMS
1500
VDC
RIO
CIO
CTI
Test Conditions
VIO
Barrier life
44000
500 V
f = 1 MHz
240 VRMS, 60 Hz
Per IEC 60112
At maximum
operating temperature
Years
100°C, 1000 VRMS, 60%
CL activation energy
Units
Test Conditions
Thermal Characteristics
Parameter
Symbol
Junction–Ambient
Thermal Resistance
Junction–Case (Top)
Thermal Resistance
Power Dissipation
QSOP
0.15" SOIC
0.3" SOIC
QSOP
0.15" SOIC
0.3" SOIC
QSOP
0.15" SOIC
0.3" SOIC
Min.
Typ.
60
60
60
10
10
20
θJA
ΨJT
Max.
°C/W
°C/W
675
700
800
PD
Soldered to doublesided board;
free air
mW
2
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Safety and Approvals
IEC 60747-5-5 (VDE 0884) (File Number 5016933-4880-0001 for SOICs)
• Working Voltage (VIORM) 600 VRMS (848 VPK); basic insulation; pollution degree 2
• Transient overvoltage (VIOTM) and surge voltage (VIOSM) 4000 VPK
• Each part tested at 1590 VPK for 1 second, 5 pC partial discharge limit
• Samples tested at 4000 VPK for 60 sec.; then 1358 VPK for 10 sec. with 5 pC partial discharge limit
• QSOP approval pending
Safety-Limiting Values
Safety rating ambient temperature
Safety rating power (180°C)
Supply current safety rating (total of supplies)
Symbol
TS
PS
IS
Value
180
270
54
Units
°C
mW
mA
IEC 61010-1 (Edition 2; TUV Certificate Numbers N1502812; N1502812-101)
Reinforced Insulation; Pollution Degree II; Material Group III
Part No. Suffix
-1
-3
None
Package
QSOP
SOIC
True 8™ Wide-body SOIC
Working Voltage
150 VRMS
150 VRMS
300 VRMS
UL 1577 (Component Recognition Program File Number E207481)
Each part tested at 3000 VRMS (4240 VPK) for 1 second; each lot sample tested at 2500 VRMS (3530 VPK) for 1 minute
Soldering Profile
Per JEDEC J-STD-020C; MSL=1
Notes:
1. Absolute Maximum specifications mean the device will not be damaged if operated under these conditions. It does not guarantee performance.
2. All voltages are with respect to network ground except differential I/O bus voltages.
3. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met.
4. The maximum time allowed for a logic transition at the TxD input is 1 μs.
3
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
IL41050-1 Pin Connections (QSOP Package)
1
VDD1
VDD1 power supply input
2
NC
3
GND1
No internal connection
4
TxD
Transmit Data input
5
RxD
Receive Data output
6
NC
VDD1 power supply ground return
VDD1
1
16
VDD2
No internal connection
NC
2
15
NC
GND1
3
14
GND2
TxD
4
13
NC
RxD
5
12
IsoRxD
Mode select input. Leave open or set low for
normal operation; set high for silent mode.
NC
6
11
S
Isolated RxD output.
No connection should be made to this pin.
NC
7
10
CANL
NC
8
9
CANH
7
NC
No internal connection
8
NC
No internal connection
9
CANH
High level CANbus line
10
CANL
Low level CANbus line
11
S
12
IsoRxD
13
NC
14
GND2
No internal connection
Bus ground
15
NC
No internal connection
16
VDD2
Bus power supply input
IL41050-3 Pin Connections (0.15" SOIC Package)
1
VDD1
VDD1 power supply input
2
GND1
VDD1 power supply ground return
3
TxD
Transmit Data input
4
RxD
Receive Data output
5
NC
No internal connection
VDD1
1
16
VDD2
6
NC
No internal connection
GND1
2
15
GND2
7
NC
No internal connection
14
NC
No internal connection
TxD
3
8
IsoTxD
RxD
13
IsoRxD
Isolated RxD output.
No connection should be made to this pin.
4
9
S
12
CANL
Low level CANbus line
NC
5
10
CANH
11
VDD2
VDD2 CAN I/O bus circuitry power supply input*
NC
6
11
VDD2
12
CANH
High level CANbus line
NC
7
10
CANL
Mode select input. Leave open or set low for
normal operation; set high for silent mode.
NC
8
9
IsoRxD
13
S
14
IsoTxD
Isolated TxD output.
No connection should be made to this pin.
15
GND2
VDD2 power supply ground return
16
VDD2
VDD2 isolation power supply input*
*Pin 11 is not internally connected to pin 16; both should be connected to the VDD2 power supply for normal operation.
4
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
IL41050 Pin Connections (0.3" SOIC Package)
1
VDD1
VDD1 power supply input
2
GND1
VDD1 power supply ground return
(pin 2 is internally connected to pin 8)
3
TxD
Transmit Data input
4
NC
No internal connection
5
RxD
Receive Data output
6
NC
No internal connection
7
NC
No internal connection
8
GND1
VDD1 power supply ground return
(pin 8 is internally connected to pin 2)
9
GND2
VDD2 power supply ground return
(pin 9 is internally connected to pin 15)
VREF
Reference voltage output
(nominally 50% of VDD2)
VDD2 CAN I/O bus circuitry power supply input*
10
11
VDD2
12
CANL
Low level CANbus line
13
CANH
High level CANbus line
14
S
15
GND2
VDD2 power supply ground return
(pin 15 is internally connected to pin 9)
16
VDD2
VDD2 isolation power supply input*
VDD1
1
16
VDD2
GND1
2
15
GND2
TxD
3
14
S
NC
4
13
CANH
RxD
5
12
CANL
NC
6
11
VDD2
NC
7
10
VREF
GND1
8
9
GND2
Mode select input. Leave open or set low for
normal operation; set high for silent mode.
*Pin 11 is not internally connected to pin 16; both should be connected to the VDD2 power supply for normal operation.
5
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Operating Specifications
Electrical Specifications (Tmin to Tmax and VDD1, VDD2= 4.75 V to 5.25 V unless otherwise stated)
Parameter
Symbol
Min.
Typ.
Max.
Units
Test Conditions
Power Supply Current
dr = 0 bps; VDD1 = 5 V
1
1.75
3.0
Quiescent supply current (recessive)
IQVDD1
mA
dr = 0 bps;
0.7
1.4
2.0
VDD1 = 3.3 V
dr = 1 Mbps, RL= 60Ω;
1.2
2.0
3.2
VDD1 = 5 V
Dynamic supply current (dominant)
IVDD1
mA
dr = 1 Mbps, RL= 60Ω;
0.9
1.6
2.2
VDD1 = 3.3 V
0 bps
Quiescent supply current (recessive)
IQVDD2
3.5
7
12
mA
Dynamic supply current (dominant)
IVDD2
26
52
70
1 Mbps, RL = 60Ω
Transmitter Data input (TxD)(1)
High level input voltage ↑
VIH
2.4
5.25
V
VDD1 = 5 V; recessive
High level input voltage ↑
VIH
2.0
3.6
V
VDD1 = 3.3 V; recessive
Low level input voltage ↓
VIL
−0.3
0.8
V
Output dominant
TxD input rise and fall time(2)
tr
1
μs
10% to 90%
tr
High level input current
IIH
−10
10
μA
VTxD = VDD1
Low level input current
IIL
10
10
μA
VTxD = 0 V
Mode select input (S)
High level input voltage
VIH
2.0
VDD2 + 0.3
V
Silent mode
Low level input voltage
VIL
−0.3
0.8
V
High-speed mode
High level input current
IIH
20
30
50
μA
VS = 2 V
Low level input current
IIL
15
30
45
μA
VS = 0 V
Receiver Data output (RxD)
High level output current
IOH
−2
−8.5
−20
mA
VRxD = 0.8 VDD1
Low level output current
IOL
2
8.5
20
mA
VRxD = 0.45 V
Failsafe supply voltage(4)
VDD2
3.6
3.9
V
Reference Voltage output (VREF)
Reference Voltage output
VREF
0.45 VDD2
0.5 VDD2
0.55 VDD2
V
−50 μA<IVREF< +50 μA
Bus lines (CANH and CANL)
Recessive voltage at CANH pin
VO(reces) CANH
2.0
2.5
3.0
V
VTxD = VDD1, no load
Recessive voltage at CANL pin
VO(reces) CANL
2.0
2.5
3.0
V
VTxD = VDD1, no load
−27V < VCANH< +32V;
Recessive current at CANH pin
IO(reces) CANH
−2.5
+2.5
mA
0V < VDD2<5.25V
−27V < VCANL < +32V;
Recessive current at CANL pin
IO(reces) CANL
−2.5
+2.5
mA
0 V <VDD2 < 5.25V
Dominant voltage at CANH pin
VO(dom) CANH
3.0
3.6
4.25
V
VTxD = 0 V
Dominant voltage at CANL pin
VO(dom) CANL
0.5
1.4
1.75
V
VTxD = 0 V
VTxD = 0 V; dominant
1.5
2.25
3.0
V
Differential bus input voltage
42.5 Ω < RL < 60 Ω
Vi(dif)(bus)
(VCANH − VCANL)
VTxD = VDD1;
−120
0
+50
mV
recessive; no load
Short-circuit output current at CANH
IO(sc) CANH
−45
−70
−95
mA
VCANH = 0 V, VTxD = 0
Short-circuit output current at CANL
IO(sc) CANL
45
70
120
mA
VCANL = 36 V, VTxD = 0
−5 V <VCANL< +10 V;
Differential receiver threshold voltage
Vi(dif)(th)
0.5
0.7
0.9
V
−5 V <VCANH< +10 V
Differential receiver input voltage
−5 V <VCANL< +10 V;
Vi(dif)(hys)
50
70
100
mV
hysteresis
−5 V <VCANH< +10 V
Common Mode input resistance at
15
25
37
Ri(CM)(CANH)
kΩ
CANH
Common Mode input resistance at
Ri(CM)(CANL)
15
25
37
kΩ
CANL
Matching between Common Mode
Ri(CM)(m)
−3
0
+3
%
VCANL = VCANH
input resistance at CANH, CANL
6
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Electrical Specifications (Tmin to Tmax and VDD1, VDD2= 4.5 V to 5.5 V unless otherwise stated)
Parameter
Symbol
Min.
Typ.
Max.
Units
Test Conditions
Bus lines (….cont)
Differential input resistance
Ri(diff)
25
50
75
kΩ
Input capacitance, CANH
Ci(CANH)
7.5
20
pF
VTxD = VDD1
Input capacitance, CANL
Ci(CANL)
7.5
20
pF
VTxD = VDD1
Differential input capacitance
Ci(dif)
3.75
10
pF
VTxD = VDD1
Input leakage current at CANH
ILI(CANH)
100
170
250
μA
VCANH= 5 V, VDD2= 0
Input leakage current at CANL
ILI(CANL)
100
170
250
μA
VCANL= 5 V, VDD2= 0
Thermal Shutdown
Shutdown junction temperature
Tj(SD)
155
165
180
°C
Parameter
TxD to bus active delay
TxD to bus inactive delay
Bus active to RxD delay
Bus inactive to RxD delay
Timing Characteristics (60 Ω / 100 pF bus loading; 20 pF RxD load; see Fig. 1)
Symbol
Min.
Typ.
Max.
Units
44
93
160
td(TxD-BUSon)
ns
36
96
128
34
68
110
td(TxD-BUSoff)
ns
37
71
113
29
63
125
td(BUSon-RxD)
ns
32
66
128
69
108
170
td(BUSoff-RxD)
ns
72
111
173
Loop delay
low-to-high or high-to-low
TxD dominant time for timeout
Common Mode Transient Immunity
(TxD Logic High or Logic Low)
Power Frequency Magnetic Immunity
Pulse Magnetic Field Immunity
Damped Oscillatory Magnetic Field
Cross-axis Immunity Multiplier
TLOOP
74
180
250
ns
Tdom(TxD)
250
457
765
μs
|CMH|,|CML|
30
50
kV/μs
Magnetic Field Immunity(3) (VDD2= 5V, 3V<VDD1<5.5V)
HPF
4000
6000
HPM
6000
7000
HOSC
6000
7000
KX
2
A/m
A/m
A/m
Test Conditions
VS= 0 V; VDD1 = 5 V
VS = 0 V; VDD1 = 3.3 V
VS = 0 V; VDD1 = 5 V
VS = 0 V; VDD1 = 3.3 V
VS = 0 V; VDD1 = 5 V
VS = 0 V; VDD1 = 3.3 V
VS = 0 V; VDD1 = 5 V
VS = 0 V; VDD1 = 3.3 V
VS = 0 V; “Typ.” at
25°C and nominal loads
VTxD = 0 V
3.0 V > VDD1 < 5.5 V
RL = 60 Ω;
VCM = 1500 VDC ;
tTRANSIENT = 25 ns
50Hz/60Hz
tp = 8µs
0.1Hz – 1MHz
See Fig. 4
Notes:
1. The TxD input is edge sensitive. Voltage magnitude of the input signal is specified, but edge rate specifications must also be met.
2. The maximum time allowed for a logic transition at the TxD input is 1 μs.
3. Test and measurement methods are given in the Electromagnetic Compatibility section on p. 10.
4. If VDD2 falls below the specified failsafe supply voltage, RxD will go High.
7
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Timing Test Circuit
Timing parameters are measured with 60 Ω / 100 pF bus line loading and 20 pF on RxD as shown in Figure 1 below:
CANH
TxD
RL
60Ω
RxD
CL
100 pF
CANL
CL
20 pF
IL41050
Figure 1. Timing characteristics test circuit.
Block Diagram
VDD1
Isolation Barrier
TxD
Thermal
Shutdown
Start-up
State
Memory
Edge
Detector/
Buffer
Timer
IsoTxD
VDD2
S
150
KΩ
Slope
Control
CANH
Driver
GND 2
VREF
(VDD2 /2)
RxD
Receiver
GND 1
VREF
CANL
IsoRxD
Figure 2. IL41050TA detailed functional diagram.
8
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Application Information
As Figure 3 shows, the IL41050TA can provide isolation and level shifting between a 5 volt CAN bus and a 3 volt microcontroller:
VDD2 = 5V
VDD1 = 3.3V
C DD1
C DD2
100 nF
100 nF
CAN
Controller
Tx0
TxD
CANH
Rx0
RxD
CANL
IL41050TA
GND1
GND2
Figure 3. Isolated CAN node using the IL41050TA.
Bus-Side Power Supply Pins
On the 0.3" SOIC version, both VDD2 power supply inputs (pins 11 and 16) must be connected to the bus-side power supply. On some parts the
CAN I/O circuitry and bus-side isolation circuitry power are separated for testing purposes. The part may not operate without both pins powered,
and operation without both pins powered can cause damage.
Power Supply Decoupling
Both VDD1 and VDD2 must be bypassed with 100 nF ceramic capacitors. These supply the dynamic current required for the isolator switching and
should be placed as close as possible to VDD and their respective ground return pins.
Maintaining Creepage
Creepage distances are often critical in isolated circuits. In addition to meeting JEDEC standards, NVE isolator packages have unique creepage
specifications. Standard pad libraries often extend under the package, compromising creepage and clearance. Similarly, ground planes, if used,
should be spaced to avoid compromising clearance. Package drawings and recommended pad layouts are included in this datasheet.
Input Configurations
The TxD input should not be left open as the state will be indeterminate. If connected to an open-drain or open collector output, a pull-up resistor
(typically 16 kΩ) should be connected from the input to VDD1.
The Mode Select (“S”) input has a nominal 150 kΩ internal pull-down resistor. It can be left open or set low for normal operation.
Dominant Mode Time-out and Failsafe Receiver Functions
CAN bus latch up is prevented by an integrated Dominant mode timeout function. If the TxD pin is forced permanently low by hardware or
software application failure, the time-out returns the RxD output to the high state no more than 765 μs after TxD is asserted dominant. The timer
is triggered by a negative edge on TxD. If the duration of the low is longer than the internal timer value, the transmitter is disabled, driving the
bus to the recessive state. The timer is reset by a positive edge on pin TxD.
If power is lost on Vdd2, the IL41050 asserts the RxD output high when the supply voltage falls below 3.8 V. RxD will return to normal
operation when Vdd2 rises above approximately 4.2 V.
Programmable Power-Up
A unique non-volatile programmable power-up feature prevents unstable nodes. A state that needs to be present at node power up can be
programmed at the last power down. For example if a CAN node is required to “pulse” dominant at power up, TxD can be sent low by the
controller immediately prior to power down. When power is resumed, the node will immediately go dominant allowing self-check code in the
microcontroller to verify node operation. If desired, the node can also power up silently by presetting the TxD line high at power down. At the
next power on, the IL41050 will remain silent, awaiting a dominant state from the bus.
The microcontroller can check that the CAN node powered down correctly before applying power at the next “power on” request. If the node
powered down as intended, RxD will be set high and stored in the IL41050’s non-volatile memory. The level stored in the RxD bit can be read
before isolated node power is enabled, avoiding possible CAN bus disruption due to an unstable node.
9
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IL41050TA
Replacing Non-Isolated Transceivers
The IL41050 is designed to replace common non-isolated CAN transceivers such as the Philips/NXP TJA1050 with minimal circuit changes.
Some notable differences:
•
Some non-isolated CAN transceivers have internal TxD pull-up resistors, but the IL41050 TxD input should not be left open. If
connected to an open-drain or open collector output, a pull-up resistor (typically 16 kΩ) should be connected from the input to VDD1.
•
Initialization behavior varies between CAN transceivers. To ensure the desired power-up state, the IL41050 should be initialized with a
TxD pulse (low-to-high for recessive initialization), or shut down the transceiver in the desired power-up state (the “programmable
power-up feature”).
•
Many non-isolated CAN transceivers have a VREF output. Such a reference is available on the IL41050 wide-body version.
The VREF Output
VREF is a reference voltage output used to drive bus threshold comparators in some legacy systems and is provided on the IL41050 wide-body
version. The output is half of the bus supply ±10% (i.e., 0.45 VDD2 < VREF < 0.55 VDD2), and can drive up to 50 µA.
IsoRxD / IsoTxD Outputs
The IsoRxD and IsoTxD outputs are isolated versions of the RxD and TxD signals. These outputs are provided for troubleshooting on the
narrow-body version, but normally no connections should be made to the pins.
The Isolation Advantage
Battery fire caused by over or under charging of individual lithium ion cells is a major concern in multi-cell high voltage electric and hybrid
vehicle batteries. To combat this, each cell is monitored for current flow, cell voltage, and in some advanced batteries, magnetic susceptibility.
The IL41050 allows seamless connection of the monitoring electronics of every cell to a common CAN bus by electrically isolating inputs from
outputs, effectively isolating each cell from all other cells. Cell status is then monitored via the CAN controller in the Battery Management
System (BMS).
Another major advantage of isolation is the tremendous increase in noise immunity it affords the CAN node, even if the power source is a
battery. Inductive drives and inverters can produce transient swings in excess of 20 kV/μs. The traditional, non-isolated CAN node provides some
protection due to differential signaling and symmetrical driver/receiver pairs, but the IL41050 typically provides more than twice the dV/dt
protection of a traditional CAN node.
10
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11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Electrostatic Discharge Sensitivity
This product has been tested for electrostatic sensitivity to the limits stated in the specifications. However, NVE recommends that all integrated
circuits be handled with appropriate care to avoid damage. Damage caused by inappropriate handling or storage could range from performance
degradation to complete failure.
Electromagnetic Compatibility
The IL41050 is fully compliant with generic EMC standards EN50081, EN50082-1 and the umbrella line-voltage standard for Information
Technology Equipment (ITE) EN61000. The IsoLoop Isolator’s Wheatstone bridge configuration and differential magnetic field signaling ensure
excellent EMC performance against all relevant standards. NVE conducted compliance tests in the categories below:
EN50081-1
Residential, Commercial & Light Industrial
Methods EN55022, EN55014
EN50082-2: Industrial Environment
Methods EN61000-4-2 (ESD), EN61000-4-3 (Electromagnetic Field Immunity), EN61000-4-4 (Electrical Transient Immunity), EN61000-4-6
(RFI Immunity), EN61000-4-8 (Power Frequency Magnetic Field Immunity), EN61000-4-9 (Pulsed Magnetic Field), EN61000-4-10 (Damped
Oscillatory Magnetic Field)
ENV50204
Radiated Field from Digital Telephones (Immunity Test)
Immunity to external magnetic fields is higher if the field direction is “end-to-end” (rather than to “pin-to-pin”) as shown in the diagram below:
Figure 4. Orientation for high field immunity.
11
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11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
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IL41050TA
Package Drawings
Ultraminiature 16-pin QSOP Package (-1 suffix)
Dimensions in inches (mm); scale = approx. 5X
0.188 (4.77)
0.197 (5.00)
0.020 (0.50)
0.029 (0.75)
0.050 (1.27)
0.056 (1.42)
0.060 (1.52)
0.069 (1.75)
0.150 (3.8)
0.157 (4.0)
0.228 (5.8)
0.244 (6.2)
0.004 (0.10)
0.010 (0.25)
0.025 (0.635)
NOM
NOTE: Pin spacing is a BASIC
dimension; tolerances
do not accumulate
0.007 (0.20)
0.010 (0.25)
0.013 (0.3)
0.020 (0.5)
0.15" 16-pin SOIC Package (-3 suffix)
Dimensions in inches (mm); scale = approx. 5X
0.013 (0.3)
0.020 (0.5)
NOM
0.007 (0.2)
0.013 (0.3)
0.386 (9.8)
0.394 (10.0)
Pin 1 identified
by either an
indent or a
marked dot
0.016 (0.4)
0.050 (1.3)
0.055 (1.40)
0.062 (1.58)
0.054 (1.4)
0.072 (1.8)
0.150 (3.81)
0.157 (3.99)
0.049 (1.24)
0.051 (1.30)
0.228 (5.8)
0.244 (6.2)
NOTE: Pin spacing is a BASIC
dimension; tolerances
do not accumulate
0.004 (0.1)
0.012 (0.3)
12
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
0.3" 16-pin SOIC Package (no suffix)
Dimensions in inches (mm); scale = approx. 5X
0.033 (0.85)*
0.043 (1.10)
0.260 (6.60)*
0.280 (7.11)
0.013 (0.3)
0.020 (0.5)
0.007 (0.2)
0.013 (0.3)
0.397 (10.08)
0.413 (10.49)
0.017 (0.43)*
0.022 (0.56)
0.016 (0.4)
0.050 (1.3)
0.007 (0.18)*
0.010 (0.25)
0.092 (2.34)
0.105 (2.67)
Pin 1 identified by
either an indent
or a marked dot
0.08 (2.0)
0.10 (2.5)
0.292 (7.42)*
0.299 (7.59)
0.049 (1.24)
0.051 (1.30)
0.394 (10.00)
0.419 (10.64)
NOTE: Pin spacing is a BASIC
dimension; tolerances
do not accumulate
*Specified for True 8™ package to guarantee 8 mm creepage per IEC 60601.
0.004 (0.1)
0.012 (0.3)
13
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11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
Recommended Pad Layouts
4 mm x 5 mm 16-pin QSOP Pad Layout
Dimensions in inches (mm); scale = approx. 5X
0.160 (4.05)
0.025 (0.635)
0.012 (0.30)
16 PLCS
0.275 (6.99)
0.15" 16-pin SOIC Pad Layout
Dimensions in inches (mm); scale = approx. 5X
0.160 (4.06)
0.050 (1.27)
0.020 (0.51)
16 PLCS
0.275 (6.99)
14
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©NVE Corporation
IL41050TA
0.3" 16-pin SOIC Pad Layout
Dimensions in inches (mm); scale = approx. 5X
0.317 (8.05)
0.050 (1.27)
0.020 (0.51)
16 PLCS
0.449 (11.40)
15
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www.IsoLoop.com
©NVE Corporation
IL41050TA
Ordering Information and Valid Part Numbers
IL 4 1050 T A-3 E TR13
Valid Part Numbers
IL41050TAE
IL41050TAE TR13
IL41050TA-3E
IL41050TA-3E TR7
IL41050TA-3E TR13
IL41050TA-1E
IL41050TA-1E TR7
IL41050TA-1E TR13
Bulk Packaging
Blank = Tube (50 pcs)
TR7 = 7'' Tape and Reel
(800 pcs 0.15'' SOIC or
1000 pcs QSOP)
TR13 = 13'' Tape and Reel
(1500 pcs 0.3'' SOIC,
3000 pcs 0.15'' SOIC, or
5000 pcs QSOP)
Package
E = RoHS Compliant
Package Type
Blank = 0.3'' SOIC
-3 = 0.15'' SOIC
-1 = 0.15'' QSOP
Transceiver Revision
Temperature Range
T = Extended
(-55˚C to +125˚C)
Channel Configuration
1050 = CAN Transceiver
Base Part Number
4 = Isolated Transceiver
Product Family
IL = Isolators
RoHS
COMPLIANT
16
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©NVE Corporation
IL41050TA
Revision History
ISB-DS-001-IL41050TA-J
June 2014
Change
ISB-DS-001-IL41050TA-I
April 2014
Change
ISB-DS-001-IL41050TA-H
November 2013
Change
ISB-DS-001-IL41050TA-G
June 2013
Change
ISB-DS-001-IL41050TA-F
January 2013
Change
ISB-DS-001-IL41050TA-E
December 2012
Changes
ISB-DS-001-IL41050TA-D
October 2012
Changes
ISB-DS-001-IL41050TA-C
July 2012
Changes
ISB-DS-001-IL41050TA-B
July 2012
Changes
ISB-DS-001-IL41050TA-A
May 2012
Changes
ISB-DS-001-IL41050TA-Preview
Changes
February 2012
• Increased QSOP creepage specification from 2.75 mm to 3.2 mm (p. 2).
• Clarified note that pins 11 and 16 on the 0.3" SOIC version should both be connected (p. 9).
• Added QSOP version (-1 suffix).
• Revised and added details to thermal characteristic specifications (p. 2).
• Added VDE 0884 Safety-Limiting Values (p. 3).
• IEC 60747-5-5 (VDE 0884) certification.
• Upgraded from MSL 2 to MSL 1.
•
•
•
•
•
•
Added VDE 0884 pending.
Added transient immunity specifications.
Added high voltage endurance specification (p. 2).
Increased magnetic immunity specifications (p. 6).
Updated package drawings.
Added recommended solder pad layouts.
• Added thermal characteristics (p. 2).
• Cosmetic changes.
• UL 1577 recognition and IEC 61010-1 approval.
• Detailed isolation and barrier specifications.
• Style and cosmetic changes.
• Changed title to highlight speed.
• Added block diagram (detailed functional diagram).
• Rearranged and repaginated.
• Tightened and clarified typical loop delay specification.
• Clarified IsoRxD / IsoTxD outputs on narrow-body package.
• Specified timing characteristics test conditions and added test circuit (p. 5).
• More detailed application diagram (p. 6).
• Misc. cosmetic changes.
• Initial release.
• Released product preview.
17
NVE Corporation
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Fax: (952) 829-9189
www.IsoLoop.com
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IL41050TA
Datasheet Limitations
The information and data provided in datasheets shall define the specification of the product as agreed between NVE and its customer, unless NVE and
customer have explicitly agreed otherwise in writing. All specifications are based on NVE test protocols. In no event however, shall an agreement be
valid in which the NVE product is deemed to offer functions and qualities beyond those described in the datasheet.
Limited Warranty and Liability
Information in this document is believed to be accurate and reliable. However, NVE does not give any representations or warranties, expressed or
implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information.
In no event shall NVE be liable for any indirect, incidental, punitive, special or consequential damages (including, without limitation, lost profits, lost
savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on
tort (including negligence), warranty, breach of contract or any other legal theory.
Right to Make Changes
NVE reserves the right to make changes to information published in this document including, without limitation, specifications and product descriptions
at any time and without notice. This document supersedes and replaces all information supplied prior to its publication.
Use in Life-Critical or Safety-Critical Applications
Unless NVE and a customer explicitly agree otherwise in writing, NVE products are not designed, authorized or warranted to be suitable for use in life
support, life-critical or safety-critical devices or equipment. NVE accepts no liability for inclusion or use of NVE products in such applications and such
inclusion or use is at the customer’s own risk. Should the customer use NVE products for such application whether authorized by NVE or not, the
customer shall indemnify and hold NVE harmless against all claims and damages.
Applications
Applications described in this datasheet are illustrative only. NVE makes no representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications and products using NVE products, and NVE accepts no liability for any
assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NVE product is suitable and fit for
the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customers. Customers should
provide appropriate design and operating safeguards to minimize the risks associated with their applications and products.
NVE does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party customers. The customer is responsible for all necessary testing for the
customer’s applications and products using NVE products in order to avoid a default of the applications and the products or of the application or use by
customer’s third party customers. NVE accepts no liability in this respect.
Limiting Values
Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the
device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the recommended
operating conditions of the datasheet is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the
quality and reliability of the device.
Terms and Conditions of Sale
In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NVE hereby expressly objects to
applying the customer’s general terms and conditions with regard to the purchase of NVE products by customer.
No Offer to Sell or License
Nothing in this document may be interpreted or construed as an offer to sell products that is open for acceptance or the grant, conveyance or implication
of any license under any copyrights, patents or other industrial or intellectual property rights.
Export Control
This document as well as the items described herein may be subject to export control regulations. Export might require a prior authorization from national authorities.
Automotive Qualified Products
Unless the datasheet expressly states that a specific NVE product is automotive qualified, the product is not suitable for automotive use. It is neither
qualified nor tested in accordance with automotive testing or application requirements. NVE accepts no liability for inclusion or use of non-automotive
qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall
use the product without NVE’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the
product for automotive applications beyond NVE’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies
NVE for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NVE’s
standard warranty and NVE’s product specifications.
18
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.IsoLoop.com
©NVE Corporation
IL41050TA
An ISO 9001 Certified Company
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
e-mail: [email protected]
©NVE Corporation
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
ISB-DS-001-IL41050TA-J
June 2014
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www.IsoLoop.com
©NVE Corporation
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