datasheet: pdf

SP207E–SP213E
Low Power, High ESD +5V RS232 Transceivers
0.1µF
16V
5
4
4
4
Receivers Pins
3
4
5
5
24
24
28
28
VCC
V+
11
12 C –
1
+
V–
13 C +
2
15
0.1µF
+ 6.3V
0.1µF
16V
+
SP207E
14
C2 –
7
T1
2
T1 OUT
T2 IN
6
T2
3
RS-232 OUTPUTS
400KOHM
T2 OUT
400KOHM
T3 IN
18
T3
1
T3 OUT
400KOHM
T4 IN
19
T4
24
T4 OUT
400KOHM
T5 IN
TTL/CMOS OUTPUTS
SP207E
SP208E
SP211E
SP213E
Drivers
C1 +
400KOHM
T1 IN
Now Available in Lead Free Packaging
Device
+
R1 OUT
R2 OUT
R3 OUT
21
5
22
17
Table 1. Model Selection Table
T5
20
4
R1
5KOHM
R2
5KOHM
R3
23
16
T5 OUT
R1 IN
R2 IN
R3 IN
RS-232 INPUTS
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
9
10
0.1µF
6.3V
TTL/CMOS INPUTS
+5V INPUT
■ Meets All EIA-232 and ITU V.28
Specifications
0.1µF
6.3V
■ Single +5V Supply Operation
■ 3mA Typical Static Supply Current
■ 4 x 0.1µF External Charge Pump Capacitors
■ Typical 230kbps Transmission Rates
■ Standard SOIC and SSOP Footprints
■ 1µA Shutdown Mode (SP211E & SP213E)
■ Two Wake-Up Receivers (SP213E)
■ Tri-State/RxEnable (SP211E & SP213E)
■ Improved ESD Specifications:
5KOHM
8
GND
DESCRIPTION
The SP207E-SP213E are enhanced transceivers intended for use in RS-232 and V.28 serial
communication. These devices feature very low power consumption and single-supply operation
making them ideal for space-constrained applications. Sipex-patented (5,306,954) on-board
charge pump circuitry generates fully compliant RS-232 voltage levels using small and inexpensive 0.1µF charge pump capacitors. External +12V and -12V supplies are not required. The
SP211E and SP213E feature a low-power shutdown mode, which reduces power supply drain
to 1µA. SP213E includes two receivers that remain active during shutdown to monitor for signal activity.
The SP207E-SP213E devices are pin-to-pin compatible with our previous SP207, SP208,
SP211 and SP213 as well as industry-standard competitor devices. Driver output and receiver
input pins are protected against ESD to over ±15kV for both Human Body Model and IEC10004-2 Air Discharge test methods. Data rates of over 120kbps are guaranteed with 230kbps typical,
making them compatible with high speed modems and PC remote-access applications.
Receivers also incorporate hysteresis for clean reception of slow moving signals.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
1
© Copyright 2006 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
Power Dissipation Per Package
24-pin SSOP (derate 11.2mW/oC above +70oC)....900mW
24-pin PDIP (derate 15.9mW/oC above +70oC)....1300mW
24-pin SOIC (derate 12.5mW/oC above +70oC)...1000mW
28-pin SSOP (derate 11.2mW/oC above +70oC)....900mW
28-pin SOIC (derate 12.7mW/oC above +70oC)...1000mW
These are stress ratings only and functional
operation of the device at these or any other
above those indicated in the operation sections
of the specifications below is not implied. Exposure
to absolute maximum rating conditions for extended
periods of time may affect reliability.
VCC .................................................................. +6V
V+ ....................................... (VCC – 0.3V) to +13.2V
V– ................................................................ 13.2V
Input Voltages
TIN .......................................... –0.3V to (VCC +0.3V)
RIN ................................................................ ±20V
Output Voltages
TOUT ................................ (V+, +0.3V) to (V–, –0.3V)
ROUT ....................................... –0.3V to (VCC +0.3V)
Short Circuit Duration on TOUT .............. Continuous
SPECIFICATIONS
.
VCC at nominal ratings; 0.1µF charge pump capacitors; TMIN to TMAX, unless otherwise noted.
PARAMETER
TTL INPUTS
Logic Threshold
VIL
VIH
Logic Pullup Current
Maximum Transmssion Rate
TTL OUTPUTS
Compatibility
VOL
VOH
Leakage Current
RS232 OUTPUT
Output Voltage Swing
MIN.
TYP.
0.8
2.0
120
15
230
0.4
Volts
Volts
µA
kbps
CONDITIONS
TIN, EN, SD
TIN = 0V
CL = 1000pF, RL = 3KΩ
Volts
Volts
µA
IOUT = 3.2mA; VCC = +5V
IOUT = –1.0mA
+7
Volts
+25
Ω
mA
All transmitter outputs loaded
with 3KΩ to ground
VCC = 0V; VOUT = +2V
Infinite duration, VOUT = 0V
3.5
0.05
+5
1.2
1.7
0.5
5
1.5
0.5
Transition Time
Date: 1/27/06
200
UNIT
TTL/CMOS
Output Resistance
300
Output Short Circuit Current
RS232 INPUT
Voltage Range
–15
Voltage Threshold
Low
0.8
High
Hysteresis
0.2
Resistance
3
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
Output Enable Time
Output Disable Time
MAX.
+10
0V ≤ ROUT ≤ VCC ; SP211 EN = 0V;
SP213 EN = VCC
TA = +25°C
+15
Volts
2.8
1.0
7
Volts
Volts
Volts
kΩ
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
VCC = +5V
VIN =+15V; TA = +25°C
1.5
30
µs
µs
V/µs
1.5
µs
TTL–to–RS-232
RS-232–to–TTL
CL = 50pF, RL = 3–7KΩ;
TA = +25°C; from +3V
CL = 2,500pF, RL = 3KΩ;
measured from +3V to –3V
or –3V to +3V
400
250
ns
ns
SP207E Low Power, High ESD +5V RS232 Transceivers
2
© Copyright 2006 Sipex Corporation
SPECIFICATIONS
VCC at nominal ratings; 0.1µF charge pump capacitors; TMIN to TMAX, unless otherwise noted.
PARAMETER
POWER REQUIREMENTS
VCC
SP207
All other parts
ICC
MIN.
TYP.
MAX.
4.75
4.50
5.00
5.00
5.25
5.50
3
15
1
6
UNIT
Shutdown Current
10
ENVIRONMENTAL AND MECHANICAL
Operating Temperature
Commercial, –C
0
+70
Extended, –E
–40
+85
Storage Temperature
–65
+125
Package
–A
Shrink (SSOP) small outline
–T
Wide (SOIC) small outline
–P
Narrow (PDIP) Plastic Dual-In-Line
CONDITIONS
Volts
Volts
mA
mA
µA
TA = +25°C
No load; VCC = ±10%
All transmitters RL = 3KΩ
TA = +25°C
°C
°C
°C
Transmitter Output @ 120kbps
RL=3KΩ, CL=1,000pF
Transmitter Output @ 120kbps
RL=3KΩ, CL=2,500pF
Transmitter Output @ 240kbps
RL=3KΩ, CL=1,000pF
Transmitter Output @ 240kbps
RL=3KΩ, CL=2,500pF
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
3
© Copyright 2006 Sipex Corporation
PINOUT
1
24
T4 OUT
T2 OUT
1
24
T3 OUT
T1OUT
2
23
R2IN
T1OUT
2
23
R3IN
T2OUT
3
22
R2OUT
R1IN
4
21
T5IN
R1OUT
5
20
T5OUT
T2IN
6
19
T4IN
18
T3IN
R1IN
7
17
R3OUT
GND
16
R3IN
VCC
C 1+
7
GND
8
VCC
9
R2IN
3
22
R3OUT
R2OUT
4
21
T4IN
T1IN
5
20
T4OUT
R1OUT
6
19
T3IN
18
T2IN
8
17
R4OUT
9
16
R4IN
10
15
V–
SP208E
T1IN
SP207E
T3 OUT
C 1+
10
15
V–
V+
11
14
C2–
V+
11
14
C2–
13
C2+
C1–
12
13
C2+
C 1–
12
1
28
T4 OUT
T3 OUT
1
28
T4 OUT
T1OUT
2
27
R3IN
T1OUT
2
27
R3IN
T2OUT
3
26
R3OUT
T2OUT
3
26
R3OUT
4
25
SHUTDOWN (SD)
R2IN
4
25
SHUTDOWN (SD)
24
EN
R2OUT
5
24
EN
R4IN
T2IN
6
23
R4IN
R4OUT
T1IN
7
22
R4OUT
T4IN
R1OUT
8
9
R2IN
R2OUT
5
T2IN
23
6
7
R1OUT
8
SP211E
T1IN
22
21
SP213E
T3 OUT
21
T4IN
20
T3IN
10
19
R5OUT
R1IN
9
20
T3IN
R1IN
GND
10
19
R5OUT
GND
VCC
11
18
R5IN
VCC
11
18
R5IN
C 1+
12
17
V–
C1+
12
17
V–
13
16
C2–
14
15
C2+
V+
13
16
C2–
V+
C 1–
14
15
C2+
C1–
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
4
© Copyright 2006 Sipex Corporation
FEATURES
The SP207E, SP208E, SP211E and
SP213E multi–channel transceivers fit most
RS-232/V.28 communication needs. All of
these devices feature low–power CMOS
con-struction and SIPEX–proprietary onboard charge pump circuitry to generate
RS-232 signal-voltages, making them ideal
for applications where +9V and -9V supplies
are not available. The highly efficient charge
pump is optimized to use small and
inexpensive 0.1µF charge pump capacitors,
saving board space and reducing overall
circuit cost.
Transmitter/Drivers
The drivers are single-ended inverting
transmitters, which accept either TTL or
CMOS inputs and output the RS-232 signals
with an inverted sense relative to the input
logic levels. Should the input of the driver be
left open, an internal pullup to VCC forces the
input high, thus committing the output to a
logic-1 (MARK) state. The slew rate of the
transmitter output is internally limited to a
maximum of 30V/µs in order to meet the
EIA/RS-232 and ITU V.28 standards. The
transition of the output from high to low also
meets the monotonicity requirements of the
standard even when loaded. Driver output
voltage swing is ±7V (typical) with no load,
and ±5V or greater at maximum load. The
transmitter outputs are protected against
infinite short–circuits to ground without
degradation in reliability.
Each device provides a different driver/
receiver combination to match standard
application requirements. The SP207E is a
5-driver, 3-receiver device, ideal for DCE
applications such as modems, printers or
other peripherals. SP208E is a 4-driver/
4receiver device, ideal for providing handshaking signals in V.35 applications or other
general-purpose serial communications.
The SP211E and SP213E are each 3-driver,
5-receiver devices ideal for DTE serial ports
on a PC or other data-terminal equipment.
The drivers of the SP211E, and SP213E can
be tri–stated by using the SHUTDOWN
function. In this “power-off” state the charge
pump is turned off and VCC current drops to
1µA typical. Driver output impedance will
remain greater than 300Ω, satisfying the
RS-232 and V.28 specifications. For SP211E
SHUTDOWN is active when pin 25 is driven
high. For SP213E SHUTDOWN is active
when pin 25 is driven low.
The SP211 and SP213E feature a low–
power shutdown mode, which reduces power
supply drain to 1µA. The SP213E includes a
Wake-Up function which keeps two receivers
active in the shutdown mode, unless disabled
by the EN pin.
Receivers
The receivers convert RS-232 level input
signals to inverted TTL level signals. Because
signals are often received from a
transmission line where long cables and
system interference can degrade signal
quality, the inputs have enhanced sensitivity
to detect weakened signals. The receivers
also feature a typical hysteresis margin of
500mV for clean reception of slowly
transitioning signals in noisy conditions.
These enhancements ensure that the
receiver is virtually immune to noisy
transmission lines.
The family is available in 28 and 24 pin SO
(wide) and SSOP (shrink) small outline
packages. Devices can be specified for
commercial (0˚C to +70˚C) and industrial/
extended (–40˚C to +85˚C) operating
temperatures.
THEORY OF OPERATION
Sipex RS232 transceivers contain three basic
circuit blocks — a) transmitter/driver,
b) receiver and c) the SIPEX–proprietary
charge pump. SP211E and SP213E also
include SHUTDOWN and ENABLE functions.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
5
© Copyright 2006 Sipex Corporation
Receiver input thresholds are between 1.2
to 1.7 volts typical. This allows the receiver
to detect standard TTL or CMOS logic-level
signals as well as RS232 signals. If a
receiver input is left unconnected or undriven, a 5kΩ pulldown resistor to ground
will commit the receiver to a logic-1 output
state.
Phase 2
VSS transfer and invert: Phase two connects
the negative terminal of C2 to the VSS storage
capacitor and the positive terminal of C2 to
ground. This transfers the doubled and
inverted (V-) voltage onto C3. Meanwhile,
capacitor C1 charged from VCC to prepare it
for its next phase.
VCC = +5V
HIGHLY EFFICIENT CHARGE–PUMP
The onboard dual-output charge pump is
used to generate positive and negative signal
voltages for the RS232 drivers. This enables
fully compliant RS232 and V.28 signals from
a single power supply device.
C1
The charge pumps use four external
capacitors to hold and transfer electrical
charge. The Sipex–patented design (US
Patent #5,306,954) uses a unique approach
compared to older, less–efficient designs.
The pumps use a four–phase voltage shifting
technique to attain symmetrical V+ and Vpower supplies. An intelligent control
oscillator regulates the operation of the
charge pump to maintain the proper voltages
at maximum efficiency.
C4
+ –
C1
+
–
–5V
C2
+
–
– +
–
– +
VSS Storage Capacitor
C3
Figure 2. Charge Pump — Phase 2
VDD Storage Capacitor
VSS Storage Capacitor
C3
–5V
–
+
C2
–10V
VCC = +5V
+5V
+
C4
+ – V Storage Capacitor
DD
Phase 3
VDD charge store and double: Phase three
is identical to the first phase. The positive
terminals of capacitors C1 and C2 are charged
from VCC with their negative terminals initially
connected to ground. Cl+ is then connected
to ground and the stored charge from C1– is
superimposed onto C2–. Since C2+ is still
connected to VCC the voltage potential across
capacitor C2 is now 2 x VCC.
VCC = +5V
Figure 1. Charge Pump — Phase 1
Phase 1
VSS charge store and double: The positive
terminals of capacitors C1 and C2 are charged
from VCC with their negative terminals initially
connected to ground. Cl+ is then connected
to ground and the stored charge from C1– is
superimposed onto C2–. Since C2+ is still
connected to VCC the voltage potential across
capacitor C2 is now 2 x VCC.
Date: 1/27/06
+5V
C1
+
–
–5V
C2
+
C4
+ – V Storage Capacitor
DD
–
– +
–5V
C3
VSS Storage Capacitor
Figure 3. Charge Pump — Phase 3
SP207E Low Power, High ESD +5V RS232 Transceivers
6
© Copyright 2006 Sipex Corporation
Phase 4
— VDD transfer — The fourth phase connects
the negative terminal of C2 to ground and the
positive terminal of C2 to the VDD storage
capacitor. This transfers the doubled (V+)
voltage onto C4. Meanwhile, capacitor C1 is
charged from VCC to prepare it for its next
phase.
consumption. This improvement is made
possible by the independent phase sequence
of the Sipex charge-pump design.
The clock rate for the charge pump typically
operates at greater than 15kHz, allowing the
pump to run efficiently with small 0.1µF
capacitors. Efficient operation depends on
VCC = +5V
rapidly charging and discharging C1 and C2,
therefore capacitors should be mounted
close to the IC and have low ESR (equivalent
C4
+10V
series resistance). Low cost surface mount
+ – V Storage Capacitor
DD
ceramic capacitors (such as are widely used
+
+
C1
C2
for power-supply decoupling) are ideal for
–
–
– +
VSS Storage Capacitor use on the charge pump. However the
C3
charge pumps are designed to be able to
function properly with a wide range of
capacitor styles and values. If polarized
capacitors are used, the positive and
Figure 4. Charge Pump — Phase 4
negative terminals should be connected as
shown.
The Sipex charge-pump generates V+ and
V independently from VCC. Hence in a no–
Voltage potential across any of the capacitors
load condition V+ and V- will be symmetrical.
will never exceed 2 x VCC. Therefore
Older charge pump approaches generate
capacitors with working voltages as low as
V+ and then use part of that stored charge to
10V rating may be used with a nominal VCC
generate V . Because of inherent losses,
supply.
C1 will never see a potential greater
the magnitude of V will be smaller than V+
than
V
, so a working voltage of 6.3V is
on these older designs.
CC
adequate. The reference terminal of the VDD
capacitor may be connected either to VCC or
Under lightly loaded conditions the intelligent
ground, but if connected to ground a minimum
pump oscillator maximizes efficiency by
16V working voltage is required. Higher
running only as needed to maintain V+ and
working voltages and/or capacitance values
V . Since interface transceivers often spend
may be advised if operating at higher VCC or
much of their time at idle, this power-efficient
to provide greater stability as the capacitors
innovation can greatly reduce total power
age.
+10V
Figure 5 : typical waveforms seen on
capacitor C2 when all drivers are at
maximum load.
+
2
a) C
GND
GND
b) C
–
2
–10V
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
7
© Copyright 2006 Sipex Corporation
SHUTDOWN MODE
SP211E and SP213E feature a control input
which will shut down the device and reduce
the power supply current to less than 10µA,
making the parts ideal for battery–powered
systems. In shutdown mode the transmitters
will be tri–stated, the V+ output of the charge
pump will discharge to VCC, and the V– output
will discharge to ground. Shutdown will tristate all receiver outputs of the SP211E.
All receivers that are active during shutdown
maintain 500mV (typ.) of hysteresis. All
receivers on the SP213E may be put into tristate using the ENABLE pin.
SHUTDOWN CONDITIONS
For complete shutdown to occur and the
10µA power drain to be realized, the following
conditions must be met:
SP213E WAKEUP FUNCTION
On the SP213E, shutdown will tri-state
receivers 1-3. Receivers 4 and 5 remain
active to provide a “wake-up” function and
may be used to monitor handshaking and
control inputs for activity. With only two
receivers active during shutdown, the
SP213E draws only 5–10µA of supply
current.
SP211E:
• +5V must be applied to the SD pin
• ENABLE must be either Ground, +5.0V or
not connected
• the transmitter inputs must be either +5.0V
or not connected
• VCC must be +5V
• Receiver inputs must be greater than
Ground and less than +5V
A typical application of this function would
be where a modem is interfaced to a computer in a power–down mode. The ring indicator signal from the modem could be passed
through an active receiver in the SP213E
that is itself in the shutdown mode. The ring
indicator signal would propagate through
the SP213E to the power management circuitry of the computer to power up the microprocessor and the SP213E drivers. After the
supply voltage to the SP213E reaches +5.0V,
the SHUTDOWN pin can be disabled, taking
the SP213E out of the shutdown mode.
SP213E:
• Zero Volts must be applied to the SD pin
• ENABLE must be either Ground, +5.0V or
not connected
• The transmitter inputs must be either +5.0V
or not connected
• VCC must be +5V
• Receiver inputs must be greater than
Ground and less than +5V
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
8
© Copyright 2006 Sipex Corporation
RECEIVER ENABLE
SP211E and SP213E feature an enable input,
which allows the receiver outputs to be either
tri–stated or enabled. This can be especially
useful when the receiver is tied directly to a
shared microprocessor data bus. For the
SP211E, enable is active low; that is, Zero
Volts applied to the ENABLE pin will enable
the receiver outputs. For the SP213E, enable
is active high; that is, +5V applied to the
ENABLE pin will enable the receiver outputs.
SD#
0
0
1
1
Table 2. Shut-down and Wake–Up Truth Tables
SD
0
0
1
1
EN#
1
0
1
0
SP211E
Drivers
Active
Active
Off
Off
SP213E
Drivers
Rx 1-3
Off
Tri-State
Off
Tri-State
Active
Active
Active
Tri-State
EN
1
0
1
0
Receivers
Tri-State
Active
Tri-State
Tri-State
Rx 4-5
Active
Tri-State
Active
Tri-State
POWER UP WITH SD ACTIVE (Charge pump in shutdown mode)
t 0 (POWERUP)
+5V
R OUT
DATA VALID
0V
t WAIT
ENABLE
SD
DISABLE
POWER UP WITH SD DISABLED (Charge pump in active mode)
t 0 (POWERUP)
+5V
R OUT
DATA VALID
0V
t ENABLE
ENABLE
SD
DISABLE
EXERCISING WAKE–UP FEATURE
t 0 (POWERUP)
+5V
R OUT
DATA VALID
t ENABLE
SD
DATA VALID
DATA VALID
0V
t ENABLE
DISABLE
ENABLE
t ENABLE
DISABLE
t WAIT
VCC = +5V ±10%; TA = 25°C
t WAIT = 2ms typical, 3ms maximum
t ENABLE = 1ms typical, 2ms maximum
Figure 6. Wake–Up Timing
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
9
© Copyright 2006 Sipex Corporation
ESD TOLERANCE
The SP207E Family incorporates ruggedized ESD cells on all driver output and
receiver input pins. The ESD structure is
improved over our previous family for more
rugged applications and environments sensitive
to
electro-static
discharges and associated transients. The
improved ESD tolerance is at least +15kV
without damage nor latch-up.
The IEC-1000-4-2, formerly IEC801-2, is
generally used for testing ESD on equipment
and systems. For system manufacturers,
they must guarantee a certain amount of
ESD protection since the system itself is
exposed to the outside environment and
human presence. The premise with
IEC1000-4-2 is that the system is required to
withstand an amount of static electricity when
ESD is applied to points and surfaces of the
equipment that are accessible to personnel
during normal usage. The transceiver IC
receives most of the ESD current when the
ESD source is applied to the connector pins.
The test circuit for IEC1000-4-2 is shown on
Figure 8. There are two methods within
IEC1000-4-2, the Air Discharge method and
the Contact Discharge method.
There are different methods of ESD testing
applied:
a) MIL-STD-883, Method 3015.7
b) IEC1000-4-2 Air-Discharge
c) IEC1000-4-2 Direct Contact
The Human Body Model has been the
generally accepted ESD testing method for
semiconductors. This method is also
specified in MIL-STD-883, Method 3015.7
for ESD testing. The premise of this ESD
test is to simulate the human body’s potential
to store electro-static energy and discharge
it to an integrated circuit. The simulation is
performed by using a test model as shown in
Figure 7. This method will test the IC’s
capability to withstand an ESD transient
during normal handling such as in
manufacturing areas where the ICs tend to
be handled frequently.
With the Air Discharge Method, an ESD
voltage is applied to the equipment under
test (EUT) through air. This simulates an
electrically charged person ready to connect
a cable onto the rear of the system only to
find an unpleasant zap just before the person
touches the back panel. The high energy
potential on the person discharges through
an arcing path to the rear panel of the
system before he or she even touches the
system. This energy, whether discharged
directly or through air, is predominantly a
R
RS
S
R
RC
C
SW2
SW2
SW1
SW1
C
CS
S
DC Power
Source
Device
Under
Test
Figure 7. ESD Test Circuit for Human Body Model
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
10
© Copyright 2006 Sipex Corporation
Contact-Discharge Module
R
RS
S
R
RC
C
RV
SW2
SW2
SW1
SW1
Device
Under
Test
C
CS
S
DC Power
Source
RS and RV add up to 330Ω
330Ω ffor
or IEC1000-4-2.
i➙
Figure 8. ESD Test Circuit for IEC1000-4-2
function of the discharge current rather than
the discharge voltage. Variables with an air
discharge such as approach speed of the
object carrying the ESD potential to the
system and humidity will tend to change the
discharge current. For example, the rise
time of the discharge current varies with the
approach speed.
30A
15A
The Contact Discharge Method applies the
ESD current directly to the EUT. This method
was devised to reduce the unpredictability of
the ESD arc. The discharge current rise
time is constant since the energy is directly
transferred without the air-gap arc. In
situations such as hand held systems, the
ESD charge can be directly discharged to
the equipment from a person already holding
the equipment. The current is transferred on
to the keypad or the serial port of the
equipment directly and then travels through
the PCB and finally to the IC.
0A
t=0ns
t=30ns
t➙
Figure 9. ESD Test Waveform for IEC1000-4-2
in the capacitor is then applied through RS,
the current limiting resistor, onto the device
under test (DUT). In ESD tests, the SW2
switch is pulsed so that the device under test
receives a duration of voltage.
For the Human Body Model, the current
limiting resistor (RS) and the source capacitor
(CS) are 1.5kW an 100pF, respectively. For
IEC-1000-4-2, the current limiting resistor
(RS) and the source capacitor (CS) are 330W
an 150pF, respectively.
The circuit model in Figures 7 and 8 represent
the typical ESD testing circuit used for all
three methods. The CS is initially charged
with the DC power supply when the first
switch (SW1) is on. Now that the capacitor
is charged, the second switch (SW2) is on
while SW1 switches off. The voltage stored
Date: 1/27/06
The higher CS value and lower RS value in
the IEC1000-4-2 model are more stringent
SP207E Low Power, High ESD +5V RS232 Transceivers
11
© Copyright 2006 Sipex Corporation
EIA STANDARDS
The Electronic Industry Association (EIA)
developed several standards of data transmission which are revised and updated in
order to meet the requirements of the industry. In data processing, there are two basic
means of communicating between systems
and components. The RS--232 standard was
first introduced in 1962 and, since that time,
has become an industry standard.
than the Human Body Model. The larger
storage capacitor injects a higher voltage to
the test point when SW2 is switched on. The
lower current limiting resistor increases the
current charge onto the test point.
DEVICE PIN
TESTED
HUMAN BODY
MODEL
Air Discharge
IEC1000-4-2
Direct Contact
Level
+15kV
+15kV
+15kV
+15kV
+8kV
+8kV
4
4
Driver Outputs
Receiver Inputs
Table 3. Transceiver ESD Tolerance Levels
Specification
RS–232D
RS–423A
RS–422
RS–485
RS–562
Mode of Operation
Single–Ended
Single–Ended
Differential
Differential
Single–Ended
No. of Drivers and Receivers
Allowed on One Line
1 Driver
1 Receiver
1 Driver
10 Receivers
1 Driver
10 Receivers
32 Drivers
32 Receivers
1 Driver
1 Receiver
Maximum Cable Length
50 feet
4,000 feet
4,000 feet
4,000 feet
Maximum Data Rate
20Kb/s
100Kb/s
10Mb/s
10Mb/s
C ≤ 2,500pF @ <20Kbps;
C ≤1,000pF @ >20Kbps
64Kb/s
Driver output Maximum Voltage
±25V
±6V
–0.25V to +6V
–7V to +12V
–3.7V to +13.2V
Driver Output Signal Level
Loaded
Unloaded
±5V
±15V
±3.6V
±6V
±2V
±5V
±1.5V
±5V
±3.7V
±13.2V
Driver Load Impedance
3 – 7Kohm
450 ohm
100 ohm
54 ohm
3–7Kohm
Max. Driver Output Current
(High Impedance State)
Power On
Power Off
VMAX/300
100µA
±100µA
±100µA
±100µA
Slew Rate
30V/µs max.
Controls Provided
Receiver Input Voltage Range
±15V
±12V
–7V to +7V
–7V to +12V
Receiver Input Sensitivity
±3V
±200mV
±200mV
±200mV
±3V
Receiver Input Resistance
3–7Kohm
4Kohm min.
4Kohm min.
12Kohm min.
3–7Kohm
30V/µs max.
±15V
Table 4. EIA Standard Definitions
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
12
© Copyright 2006 Sipex Corporation
TYPICAL APPLICATION CIRCUITS...SP207E TO SP213E
+5V
11
12
C1+
VCC
C114
15 C +
2
16
16C550
UART
DCD
V+
V-
Typical EIA-232
Application:
SP213E, UART &
DB-9 Connector
13
17
C2-
8
9
22
23
26
27
7
2
DCD
1
DSR
6
Rx
2
7
RTS
DSR
3
Tx
SI
3
6
RTS
SO
CTS
5
CTS
DTR
RI
20
1
19
18
21
28
4
9
DTR
4
5
8
RI
CS
NC
CS
VCC or CS *
25
24
NC
SG
SHUTDOWN
EN
GND
Figure 10. Typical SP213E Application
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
13
© Copyright 2006 Sipex Corporation
TYPICAL APPLICATION CIRCUITS...SP207E TO SP213E
+5V INPUT
9
VCC
V+
11
12 C –
1
9
10
0.1µF
6.3V
0.1µF
16V
+
15
SP207E
TTL/CMOS INPUTS
T1 OUT
T2
T2 OUT
18
1
T3
T3 OUT
400KOHM
T4 IN
19
24
T4
T4 OUT
400KOHM
21
5
R1 OUT
5KOHM
23
R2
5KOHM
17
R3 OUT
4
R1
22
R2 OUT
20
T5
16
R3
T5 OUT
R1 IN
R2 IN
R3 IN
RS-232 INPUTS
TTL/CMOS OUTPUTS
T5 IN
TTL/CMOS OUTPUTS
3
RS-232 OUTPUTS
TTL/CMOS INPUTS
6
400KOHM
T3 IN
+
V–
5
T1 IN
0.1µF
16V
C1 +
T2 IN
18
V+
13
T3 IN
19
T4 IN
21
R3 OUT
R4 OUT
7
R1
5KOHM
4
R2 OUT
V–
5KOHM
5KOHM
17
17
0.1µF
16V
+
T2 OUT
T3 OUT
400KOHM
T4 IN
R2 OUT
R3 OUT
R4 OUT
R5 OUT
EN
21
8
5
26
22
19
T4
28
9
R1
5KOHM
R2
5KOHM
R3
5KOHM
R4
5KOHM
R5
4
27
23
18
T4 OUT
R1 IN
+
C1 +
VCC
V+
13
14 C –
1
+
R2 IN
R3 IN
R4IN
R5 IN
R4 IN
V–
15 C +
2
17
0.1µF
+ 6.3V
0.1µF
16V
+
SP213E
16
C2 –
25
7
T1
2
T1 OUT
400KOHM
T2 IN
6
T2
3
T2 OUT
400KOHM
T3 IN
20
T3
1
T3 OUT
400KOHM
T4 IN
R2 OUT
R3 OUT
R4 OUT*
R5 OUT*
24
5KOHM
T1 IN
R1 OUT
TTL/CMOS OUTPUTS
T3
1
TTL/CMOS INPUTS
RS-232 OUTPUTS
T2
3
RS-232 INPUTS
TTL/CMOS INPUTS
T3 IN
R1 OUT
TTL/CMOS OUTPUTS
T1 OUT
400KOHM
20
R3 IN
400KOHM
2
400KOHM
T2 IN
16
R4
T4 OUT
R2 IN
23
R3
11
0.1µF
6.3V
0.1µF
16V
T1
6
T3 OUT
R1 IN
3
R2
22
12
0.1µF
6.3V
C2 –
7
20
T4
6
R1 OUT
400KOHM
T1 IN
24
T3
400KOHM
+5V INPUT
0.1µF
+ 6.3V
SP211E
16
T2 OUT
5KOHM
14 C –
1
+
1
T2
GND
15 C +
2
T1 OUT
400KOHM
GND
VCC
2
T1
400KOHM
8
11
12
+
0.1µF
16V
+
15
C2 –
8
+5V INPUT
0.1µF
6.3V
0.1µF
+ 6.3V
SP208E
14
5KOHM
0.1µF
6.3V
11
400KOHM
2
T1
400KOHM
T2 IN
V+
13 C +
2
400KOHM
7
T1 IN
VCC
12 C –
1
0.1µF
16V
C2 –
C1 +
RS-232 OUTPUTS
14
+
0.1µF
6.3V
RS-232 INPUTS
+
0.1µF
16V
V–
13 C +
2
+5V INPUT
0.1µF
+ 6.3V
EN
21
8
5
26
22
19
T4
28
9
R1
5KOHM
R2
5KOHM
R3
5KOHM
R4
5KOHM
R5
4
27
23
18
T4 OUT
RS-232 OUTPUTS
+
0.1µF
6.3V
C1 +
R1 IN
R2 IN
R3 IN
R4IN*
RS-232 INPUTS
10
0.1µF
6.3V
R5 IN*
24
5KOHM
SD
25
SD
10
*Receivers active during shutdown
GND
10
GND
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
14
© Copyright 2006 Sipex Corporation
PACKAGE: PLASTIC SHRINK
SMALL OUTLINE
(SSOP)
E
H
D
A
Ø
e
B
A1
L
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Date: 1/27/06
24–PIN
28–PIN
A
0.068/0.078
(1.73/1.99)
0.068/0.078
(1.73/1.99)
A1
0.002/0.008
(0.05/0.21)
0.002/0.008
(0.05/0.21)
B
0.010/0.015
(0.25/0.38)
0.010/0.015
(0.25/0.38)
D
0.317/0.328
(8.07/8.33)
0.397/0.407
(10.07/10.33)
E
0.205/0.212
(5.20/5.38)
0.205/0.212
(5.20/5.38)
e
0.0256 BSC
(0.65 BSC)
0.0256 BSC
(0.65 BSC)
H
0.301/0.311
(7.65/7.90)
0.301/0.311
(7.65/7.90)
L
0.022/0.037
(0.55/0.95)
0.022/0.037
(0.55/0.95)
Ø
0°/8°
(0°/8°)
0°/8°
(0°/8°)
SP207E Low Power, High ESD +5V RS232 Transceivers
15
© Copyright 2006 Sipex Corporation
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
(WIDE)
E
H
D
A
Ø
e
B
A1
L
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Date: 1/27/06
24–PIN
28–PIN
A
0.093/0.104
(2.352/2.649)
0.093/0.104
(2.352/2.649)
A1
0.004/0.012
(0.102/0.300)
0.004/0.012
(0.102/0.300)
B
0.013/0.020
(0.330/0.508)
0.013/0.020
(0.330/0.508)
D
0.599/0.614
(15.20/15.59)
0.697/0.713
(17.70/18.09)
E
0.291/0.299
(7.402/7.600)
0.291/0.299
(7.402/7.600)
e
0.050 BSC
(1.270 BSC)
0.050 BSC
(1.270 BSC)
H
0.394/0.419
(10.00/10.64)
0.394/0.419
(10.00/10.64)
L
0.016/0.050
(0.406/1.270)
0.016/0.050
(0.406/1.270)
Ø
0°/8°
(0°/8°)
0°/8°
(0°/8°)
SP207E Low Power, High ESD +5V RS232 Transceivers
16
© Copyright 2006 Sipex Corporation
PACKAGE: PLASTIC
DUAL–IN–LINE
(NARROW)
E1 E
D1 = 0.005" min.
(0.127 min.)
A1 = 0.015" min.
(0.381min.)
D
A = 0.210" max.
(5.334 max).
C
A2
e = 0.100 BSC
(2.540 BSC)
B1
B
Ø
L
eA = 0.300 BSC
(7.620 BSC)
ALTERNATE
END PINS
(BOTH ENDS)
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Date: 1/27/06
24–PIN
A2
0.115/0.195
(2.921/4.953)
B
0.014/0.022
(0.356/0.559)
B1
0.045/0.070
(1.143/1.778)
C
0.008/0.014
(0.203/0.356)
D
1.230/1.280
(31.24/32.51)
E
0.300/0.325
(7.620/8.255)
E1
0.240/0.280
(6.096/7.112)
L
0.115/0.150
(2.921/3.810)
Ø
0°/ 15°
(0°/15°)
SP207E Low Power, High ESD +5V RS232 Transceivers
17
© Copyright 2006 Sipex Corporation
ORDERING INFORMATION
RS232 Transceivers:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP207ECA ................. 5 ....................................... 3 ................................................... 0°C to +70°C ............................................... 24–pin SSOP
SP207ECP ................. 5 ....................................... 3 ................................................... 0°C to +70°C ....................................... 24–pin Plastic DIP
SP207ECT ................. 5 ....................................... 3 ................................................... 0°C to +70°C ................................................ 24–pin SOIC
SP207EEA ................. 5 ....................................... 3 ............................................... –40°C to +85°C ............................................... 24–pin SSOP
SP207EEP ................. 5 ....................................... 3 ............................................... –40°C to +85°C ....................................... 24–pin Plastic DIP
SP207EET ................. 5 ....................................... 3 ............................................... –40°C to +85°C ................................................ 24–pin SOIC
SP208ECA .................
SP208ECP .................
SP208ECT .................
SP208EEA .................
SP208EEP .................
SP208EET .................
4 .......................................
4 .......................................
4 .......................................
4 .......................................
4 .......................................
4 .......................................
4 ................................................... 0°C
4 ................................................... 0°C
4 ................................................... 0°C
4 ............................................... –40°C
4 ............................................... –40°C
4 ............................................... –40°C
to
to
to
to
to
to
+70°C ............................................... 24–pin SSOP
+70°C ....................................... 24–pin Plastic DIP
+70°C ................................................ 24–pin SOIC
+85°C ............................................... 24–pin SSOP
+85°C ....................................... 24–pin Plastic DIP
+85°C ................................................ 24–pin SOIC
RS232 Transceivers with Low–Power Shutdown and Tri–state Enable:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP211ECA ............ 4 ....................................... ....5 ............................... ...................0°C to +70°C............. ................................... 28–pin SSOP
SP211ECT ............ 4 ....................................... ....5 ............................... ...................0°C to +70°C.......... ....................................... 28–pin SOIC
SP211EEA ............ 4 ....................................... ....5 ............................... ...............–40°C to +85°C................ ................................ 28–pin SSOP
SP211EET ............ 4.... ................................... ....5 ............................... ...............–40°C to +85°C................... ............................. 28–pin SOIC
RS232 Transceivers with Low–Power Shutdown, Tri–state Enable, andWake–Up Function:
Model .................... Drivers .......................... Receivers ..................................... Temperature Range ................................. Package Type
SP213ECA ............ 4 ....................................... 5, with 2 active in Shutdown ................................ 0°C to +70°C ....................... ....28–pin SSOP
SP213ECT ............ 4 ....................................... 5, with 2 active in Shutdown ................................ 0°C to +70°C ............................ 28–pin SOIC
SP213EEA ............ 4 ....................................... 5, with 2 active in Shutdown ................................ –40°C to +85°C ....................... 28–pin SSOP
SP213EET ............ 4 ....................................... 5, with 2 active in Shutdown ................................ –40°C to +85°C ........................ 28–pin SOIC
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Available in lead free packaging. To order add "-L" suffix to part number.
Example: SP213EET/TR = standard; SP213EET-L/TR = lead free.
/TR = Tape and Reel
Solved by Sipex
TM
Sipex Corporation
Headquarters and
Sales Office
233 South Hillview Drive
Milpitas, CA 95035
TEL: (408) 934-7500
FAX: (408) 935-7600
Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the
application or use of any product or circuit described hereing; neither does it convey any license under its patent rights nor the rights of others.
Date: 1/27/06
SP207E Low Power, High ESD +5V RS232 Transceivers
18
© Copyright 2006 Sipex Corporation