SIPEX SP232E

®
SP202E/232E/233E/310E/312E
High-Performance RS-232
Line Drivers/Receivers
■ Operates from Single +5V Power Supply
■ Meets All RS-232D and ITU V.28
Specifications
■ Operates with 0.1µF to 10µF Capacitors
■ High Data Rate – 120Kbps Under Load
■ Low Power Shutdown ≤1µA (Typical)
■ 3-State TTL/CMOS Receiver Outputs
■ Low Power CMOS – 3mA Operation
■ Improved ESD Specifications:
±15kV Human Body Model
±15kV IEC1000-4-2 Air Discharge
±8kV IEC1000-4-2 Contact Discharge
DESCRIPTION…
The SP202E/232E/233E/310E/312E devices are a family of line driver and receiver pairs that
meet the specifications of RS-232 and V.28 serial protocols with enhanced ESD performance.
The ESD tolerance has been improved on these devices to over ±15KV for both Human Body
Model and IEC1000-4-2 Air Discharge Method. These devices are pin-to-pin compatible with
Sipex's SP232A/233A/310A/312A devices as well as popular industry standards. As with the
initial versions, the SP202E/232E/233E/310E/312E devices feature at least 120Kbps data rate
under load, 0.1µF charge pump capacitors, and overall ruggedness for commercial applications.
This family also features Sipex's BiCMOS design allowing low power operation without
sacrificing performance. The series is available in plastic and ceramic DIP and SOIC packages
operating over the commercial, industrial and military temperature ranges.
Number of RS232
Model Drivers
Receivers
SP202E
2
2
SP232E
SP233E
SP310E
SP312E
Rev. 06/20/02
2
2
2
2
2
2
2
2
No. of Receivers
No. of External
Active in Shutdown 0.1µF Capacitors
0
4
0
0
0
2
4
0
4
4
Shutdown WakeUp TTL Tri–State
No
No
No
No
No
Yes
Yes
SP202E Series High Performance RS232 Transceivers
1
No
No
No
Yes
No
No
Yes
Yes
© Copyright 2002 Sipex Corporation
ABSOLUTE MAXIMUM RATINGS
This is a stress rating only and functional operation of the device at
these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods of time may affect
reliability.
Vcc ................................................................................................................................................................. +6V
V+ .................................................................................................................... (Vcc-0.3V) to +11.0V
V- ............................................................................................................................................................ -11.0V
Input Voltages
TIN ......................................................................................................................... -0.3 to (Vcc +0.3V)
RIN ............................................................................................................................................................ ±15V
Output Voltages
TOUT .................................................................................................... (V+, +0.3V) to (V-, -0.3V)
ROUT ................................................................................................................ -0.3V to (Vcc +0.3V)
Short Circuit Duration
TOUT ......................................................................................................................................... Continuous
Power Dissipation
CERDIP .............................................................................. 675mW
(derate 9.5mW/°C above +70°C)
Plastic DIP .......................................................................... 375mW
(derate 7mW/°C above +70°C)
Small Outline ...................................................................... 375mW
(derate 7mW/°C above +70°C)
SPECIFICATIONS
VCC=+5V±10%; V+=+8.5V to +13.2V (SP231A only) 0.1µF charge pump capacitors; TMIN to TMAX unless otherwise noted.
PARAMETERS
MIN.
TTL INPUT
Logic Threshold
LOW
HIGH
2.0
Logic Pull-Up Current
TTL OUTPUT
TTL/CMOS Output
Voltage, Low
Voltage, High
3.5
Leakage Current **; TA = +25°
RS-232 OUTPUT
Output Voltage Swing
±5
Output Resistance
Output Short Circuit Current
Maximum Data Rate
RS-232 INPUT
Voltage Range
Voltage Threshold
LOW
HIGH
Hysteresis
Resistance
TYP.
MAX.
UNITS
0.8
Volts
Volts
µA
TIN ; EN, SD
TIN ; EN, SD
TIN = 0V
Volts
Volts
µA
IOUT = 3.2mA; Vcc = +5V
IOUT = -1.0mA
EN = VCC, 0V≤VOUT ≤VCC
±9
Volts
±18
240
Ohms
mA
Kbps
All transmitter outputs loaded
with 3kΩ to Ground
VCC = 0V; VOUT = ±2V
Infinite duration
CL = 2500pF, RL= 3kΩ
15
200
0.4
0.05
±10
300
120
-15
0.8
0.2
3
1.2
1.7
0.5
5
CONDITIONS
+15
Volts
2.8
1.0
7
Volts
Volts
Volts
kΩ
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
VCC = 5V, TA = +25°C
TA = +25°C, -15V ≤ VIN ≤ +15V
3.0
1.0
30
µs
µs
V/µs
TTL to RS-232; CL = 50pF
RS-232 to TTL
CL = 10pF, RL= 3-7kΩ;
TA =+25°C
CL = 2500pF, RL= 3kΩ;
measured from +3V to -3V
or -3V to +3V
SP310E and SP312E only
SP310E and SP312E only
DYNAMIC CHARACTERISTICS
Driver Propagation Delay
Receiver Propagation Delay
Instantaneous Slew Rate
1.5
0.1
Transition Region Slew Rate
10
V/µs
Output Enable Time **
Output Disable Time **
POWER REQUIREMENTS
VCC Power Supply Current
400
250
ns
ns
3
15
5
mA
mA
Shutdown Supply Current **
1
5
µA
No load, TA= +25°C; VCC = 5V
All transmitters RL = 3kΩ;
TA = +25°C
VCC = 5V, TA = +25°C
**SP310E and SP312E only
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
2
© Copyright 2002 Sipex Corporation
PERFORMANCE CURVES
8.2
-10
10
25
VCC = 6V
15
VCC = 5V
4
10
2
5
VCC = 4V
-5
VOH (Volts)
-6
VCC = 4V
6
8.0
VCC = 6V
20
ICC (mA)
VCC = 5V
-7
VCC = 5V
8
VCC = 6V
-8
V+ (Volts)
V– Voltage (Volts)
-9
2
4
6
8
10
12
0
14
0
5
10
Load Current (mA)
15
20
25
30
35
0
-55
40
-40
0
Load Current (mA)
25
70
7.6
Load current = 0mA
TA = 25°C
7.4
7.0
VCC = 3V
0
7.8
7.2
VCC = 4V
-4
-3
8.4
30
12
-11
85
6.8
4.5
125
4.75
5.0
5.25
5.5
VCC (Volts)
Temperature (°C)
PINOUT…
16
VCC
C1+
1
16
VCC
2
15
GND
V+
2
15
GND
C1-
3
14
T1OUT
C1-
3
14
T1OUT
C2+
4
13
R1IN
C2+
4
13
R1IN
C2-
5
12
R1OUT
C2-
5
12
R1OUT
V-
6
11
T1IN
V-
6
11
T1IN
T2OUT
7
10
T2IN
T2OUT
7
10
T2IN
R2IN
8
9
R2OUT
R2IN
8
9
R2OUT
1
20
SHDN
C1+
2
19
VCC
V+
3
18
GND
V-
C1-
4
17
T1OUT
16
C2 -
C2+
5
16
R1IN
15
C2 +
C2-
6
15
R1OUT
14
V+
V-
7
14
N.C.
8
13
C1 -
T2OUT
8
13
T1IN
9
12
V-
R2IN
9
12
T2IN
C2- 10
11
C2 +
11
N.C.
R2OUT
T2IN
1
20
R2OUT
19
R2IN
T1IN
2
19
R2IN
R1OUT
3
18
T2OUT
R1OUT
3
18
T2OUT
R1IN
4
17
V-
R1IN
4
17
T1OUT
5
16
C2 -
T1OUT
5
GND
6
15
C2 +
GND
6
VCC
7
14
C1 –
VCC
7
V+
8
13
C1 +
C 1+
GND
9
12
C2 +
GND
V– 10
11
C2 –
SP233ECP
20
2
SP233ECT
1
T1IN
R2OUT 10
20-PIN SSOP
20-PIN PLASTIC DIP
18
ON/OFF
C1 +
2
17
VCC
V+
3
16
GND
C1-
4
15
C2 +
5
C2-
6
VT2OUT
R2IN
14
T1OUT
EN *
1
18
SHUTDOWN
C1+
2
17
VCC
V+
3
16
GND
C1-
4
15
T1OUT
SP312E
1
SP310E
NC *
SP310E_A/312E_A
N.C./EN
T2IN
20-PIN SOIC
SP232E
1
V+
SP202E
C1+
14
R1IN
13
R1OUT
R1IN
C2+
5
13
R1OUT
C2-
6
7
12
T1IN
V-
7
12
T1IN
8
11
T2IN
T2OUT
8
11
T2IN
9
10
R2IN
9
10
R2OUT
R2OUT
* N.C. for SP310E_A, EN for SP312E_A
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
3
© Copyright 2002 Sipex Corporation
FEATURES…
The SP202E/232E/233E/310E/312E devices
are a family of line driver and receiver pairs that
meet the specifications of RS-232 and V.28
serial protocols with enhanced ESD performance. The ESD tolerance has been improved
on these devices to over ±15KV for both Human
Body Model and IEC1000-4-2 Air Discharge
Method. These devices are pin-to-pin compatible with Sipex's 232A/233A/310A/312A
devices as well as popular industry standards.
As with the initial versions, the SP202E/232E/
233E/310E/312E devices feature10V/µs slew
rate, 120Kbps data rate under load, 0.1µF
charge pump capacitors, overall ruggedness
for commercial applications, and increased drive
current for longer and more flexible cable
configurations. This family also features Sipex's
BiCMOS design allowing low power operation
without sacrificing performance.
The SP310E provides identical features as the
SP232E with a single control line which
simultaneously shuts down the internal DC/DC
converter and puts all transmitter and receiver
outputs into a high impedance state. The SP312E
is identical to the SP310E with separate tri-state
and shutdown control lines.
THEORY OF OPERATION
The SP232E, SP233E, SP310E and SP312E
devices are made up of three basic circuit blocks –
1) a driver/transmitter, 2) a receiver and 3) a charge
pump. Each block is described below.
Driver/Transmitter
The drivers are inverting transmitters, which accept TTL or CMOS inputs and output the RS-232
signals with an inverted sense relative to the input
logic levels. Typically the RS-232 output voltage
swing is ±9V. Even under worst case loading
conditions of 3kOhms and 2500pF, the output is
guaranteed to be ±5V, which is consistent with the
RS-232 standard specifications. The transmitter
outputs are protected against infinite short-circuits
to ground without degradation in reliability.
The SP202E/232E/233E/310E/312E devices
have internal charge pump voltage converters
which allow them to operate from a single +5V
supply. The charge pumps will operate with
polarized or non-polarized capacitors ranging
from 0.1 to 10 µF and will generate the ±10V
needed to generate the RS-232 output levels.
Both meet all EIA RS-232 and ITU V.28
specifications.
+5V INPUT
10 µF 6.3V
+
16
0.1µ F +
6.3V
3
4
C +
0.1µ F +
16V
5
C +
V
1
CC
+5V to +10V
Voltage Doubler
C 12
+10V to -10V
Voltage Inverter
C 2-
V+
V-
0.1µ F 6.3V
2 +
6
*
+ 0.1µ F
16V
T1 IN
11
T1
14
T2
7
RS-232 OUTPUTS
400k Ω
T 1OUT
400k Ω
T2 IN
R 1 OUT
10
12
R1
9
R2
13
T 2OUT
R 1 IN
5k Ω
R 2 OUT
8
SP202E
SP232E
R 2 IN
RS-232 INPUTS
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
1
5k Ω
GND 15
*The negative terminal of the V+ storage capacitor can be tied
to either VCC or GND. Connecting the capacitor to VCC (+5V)
is recommended.
Figure 1. Typical Circuit using the SP202E or SP232E.
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
4
© Copyright 2002 Sipex Corporation
400k Ω
3
R 1 OUT
5
T2
18
T 1OUT
T 2OUT
4
R1
R 1 IN
5k Ω
R 2 OUT
Do not make
connection to
these pins
Internal
-10V Power
Supply
Internal
+10V Power
Supply
20
19
R2
8
12
17
C 1-
C + 11
V-
C 2 + 15
C2 -
SP233ECP
V+
GND
GND
6
9
C2 -
T2 IN
R 1 OUT
16
400k Ω
1
400k Ω
T1
5
T2
18
T 1OUT
T 2OUT
4
R1
R 1 IN
5k Ω
20
R 2 OUT
14
10
17
8
19
R2
13 C +
1
Internal
-10V Power
Supply
Internal
+10V Power
Supply
10
2
3
Do not make
connection to
these pins
2
V-
14
R 2 IN
5k Ω
C 1+
13
T1 IN
RS-232 OUTPUTS
1
T1
RS-232 INPUTS
400k Ω
7
V CC
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
T2 IN
2
7
V CC
RS-232 OUTPUTS
T1 IN
+5V INPUT
RS-232 INPUTS
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
+5V INPUT
R 2 IN
5k Ω
C 1-
C + 12
V-
C 2 + 15
V-
C2 -
2
SP233ECT
GND
GND
V+
6
C2 -
11
16
9
Figure 2. Typical Circuits using the SP233ECP and SP233ECT
The instantaneous slew rate of the transmitter
output is internally limited to a maximum of 30V/
µs in order to meet the standards [EIA RS-232-D
2.1.7, Paragraph (5)]. However, the transition region slew rate of these enhanced products is typically 10V/µs. The smooth transition of the loaded
output from VOL to VOH clearly meets the monotonicity requirements of the standard [EIA
RS-232-D 2.1.7, Paragraphs (1) & (2)].
and system interference can degrade the signal, the
inputs have a typical hysteresis margin of 500mV.
This ensures that the receiver is virtually immune
to noisy transmission lines.
The input thresholds are 0.8V minimum and 2.4V
maximum, again well within the ±3V RS-232
requirements. The receiver inputs are also protected against voltages up to ±15V. Should an
input be left unconnected, a 5KOhm pulldown
resistor to ground will commit the output of the
receiver to a high state.
Receivers
The receivers convert RS-232 input signals to
inverted TTL signals. Since the input is usually
from a transmission line, where long cable lengths
+5V INPUT
+5V INPUT
10 µF 6.3V
10 µF 6.3V
+
+
+5V to +10V
Voltage Doubler
0.1 µF
16V
3 +
V+
2
6
C 2-
+10V to -10V
Voltage Inverter
V-
+
7
2
0.1µ F +
6.3V
4
5
*
0.1µ F +
16V
6
0.1 µF
16V
T1
15
T2
8
T 1OUT
400k Ω
T2 IN
R 1 OUT
11
13
T 2OUT
14
R1
R 1 IN
5k Ω
R 2 OUT
10
9
R2
R 2 IN
TTL/CMOS OUTPUTS
12
RS-232 OUTPUTS
T1 IN
TTL/CMOS INPUTS
400k Ω
5k Ω
SP310E
18
ON/OFF
17
V
C +
1
C 1-
CC
+5V to +10V
Voltage Doubler
V+
C +
2
C 2-
+10V to -10V
Voltage Inverter
V-
0.1µ F
16V
3 +
7
*
+ 0.1µ F
16V
400k Ω
T1 IN
12
T1
15
T2
8
RS-232 OUTPUTS
C 1-
CC
RS-232 INPUTS
TTL/CMOS OUTPUTS
TTL/CMOS INPUTS
1
C +
0.1µ F +
16V
17
V
C +
T 1OUT
400k Ω
T2 IN
R 1 OUT
11
13
14
R1
T 2OUT
R 1 IN
5k Ω
R 2 OUT
10
9
R2
R 2 IN
RS-232 INPUTS
2
0.1µ F +
6.3V
4
5
5k Ω
EN
1
GND 16
SP312E
18
SHUTDOWN
GND 16
*The negative terminal of the V+ storage capacitor can be tied
to either VCC or GND. Connecting the capacitor to VCC (+5V)
is recommended.
*The negative terminal of the V+ storage capacitor can be tied
to either VCC or GND. Connecting the capacitor to VCC (+5V)
is recommended.
Figure 3. Typical Circuits using the SP310E and SP312E
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
5
© Copyright 2002 Sipex Corporation
VCC = +5V
C4
+5V
C1
+
–5V
–
–
+
+
C2
–
+
–
VDD Storage Capacitor
VSS Storage Capacitor
C3
–5V
Figure 4. Charge Pump — Phase 1
In actual system applications, it is quite possible
for signals to be applied to the receiver inputs
before power is applied to the receiver circuitry.
This occurs, for example, when a PC user attempts
to print, only to realize the printer wasn’t turned on.
In this case an RS-232 signal from the PC will
appear on the receiver input at the printer. When
the printer power is turned on, the receiver will
operate normally. All of these enhanced devices
are fully protected.
Phase 2
— VSS transfer — Phase two of the clock connects the negative terminal of C2 to the VSS
storage capacitor and the positive terminal of C2
to ground, and transfers the generated –l0V to
C3. Simultaneously, the positive side of capacitor C 1 is switched to +5V and the negative side
is connected to ground.
Phase 3
— VDD charge storage — The third phase of the
clock is identical to the first phase — the charge
transferred in C1 produces –5V in the negative
terminal of C1, which is applied to the negative
side of capacitor C2. Since C2+ is at +5V, the
voltage potential across C2 is l0V.
Charge Pump
The charge pump is a Sipex–patented design
(5,306,954) and uses a unique approach compared to older less–efficient designs. The charge
pump still requires four external capacitors, but
uses a four–phase voltage shifting technique to
attain symmetrical 10V power supplies. There
is a free–running oscillator that controls the four
phases of the voltage shifting. A description of
each phase follows.
Phase 4
— VDD transfer — The fourth phase of the clock
connects the negative terminal of C2 to ground,
and transfers the generated l0V across C2 to C4,
the VDD storage capacitor. Again, simultaneously
with this, the positive side of capacitor C1 is
switched to +5V and the negative side is connected to ground, and the cycle begins again.
Phase 1
— VSS charge storage —During this phase of
the clock cycle, the positive side of capacitors
C1 and C2 are initially charged to +5V. Cl+ is
then switched to ground and the charge in C1– is
transferred to C2–. Since C2+ is connected to
+5V, the voltage potential across capacitor C2 is
now 10V.
Since both V+ and V– are separately generated
from VCC; in a no–load condition V+ and V– will
VCC = +5V
C4
C1
+
–
C2
+
–
–
+
+
–
VDD Storage Capacitor
VSS Storage Capacitor
C3
–10V
Figure 5. Charge Pump — Phase 2
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
6
© Copyright 2002 Sipex Corporation
+10V
a) C2
+
GND
GND
b) C2–
–10V
Figure 6. Charge Pump Waveforms
Shutdown (SD) and Enable (EN) for the
SP310E and SP312E
Both the SP310E and SP312E have a shutdown/
standby mode to conserve power in battery-powered systems. To activate the shutdown mode,
which stops the operation of the charge pump, a
logic “0” is applied to the appropriate control line.
For the SP310E, this control line is ON/OFF (pin
18). Activating the shutdown mode also puts the
be symmetrical. Older charge pump approaches
that generate V– from V+ will show a decrease in
the magnitude of V– compared to V+ due to the
inherent inefficiencies in the design.
The clock rate for the charge pump typically
operates at 15kHz. The external capacitors can
be as low as 0.1µF with a 16V breakdown
voltage rating.
VCC = +5V
C4
+5V
C1
+
C2
–
–5V
+
–
–
+
+
–
VDD Storage Capacitor
VSS Storage Capacitor
C3
–5V
Figure 7. Charge Pump — Phase 3
VCC = +5V
C4
+10V
+
C1
+
–
C2
–
+
–
–
+
VDD Storage Capacitor
VSS Storage Capacitor
C3
Figure 8. Charge Pump — Phase 4
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
7
© Copyright 2002 Sipex Corporation
SP310E transmitter and receiver outputs in a high
impedance condition (tri-stated). The shutdown
mode is controlled on the SP312E by a logic “0”
on the SHUTDOWN control line (pin 18); this also
puts the transmitter outputs in a tri–state mode.
The receiver outputs can be tri–stated separately
during normal operation or shutdown by a logic
“1” on the ENABLE line (pin 1).
Pin Strapping for the SP233ECT
The SP233E packaged in the 20–pin SOIC package (SP233ECT) has a slightly different pinout
than the SP233E in other package configurations.
To operate properly, the following pairs of pins
must be externally wired together:
the two V– pins (pins 10 and 17)
the two C2+ pins (pins 12 and 15)
the two C2– pins (pins 11 and 16)
Wake–Up Feature for the SP312E
The SP312E has a wake–up feature that keeps
all the receivers in an enabled state when the
device is in the shutdown mode. Table 1 defines
the truth table for the wake–up function.
All other connections, features, functions and
performance are identical to the SP233E as
specified elsewhere in this data sheet.
With only the receivers activated, the SP312E
typically draws less than 5µA supply current.
In the case of a modem interfaced to a computer
in power down mode, the Ring Indicator (RI)
signal from the modem would be used to "wake
up" the computer, allowing it to accept data
transmission.
ESD TOLERANCE
The SP202E/232E/233E/310E/312E devices
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.
After the ring indicator signal has propagated
through the SP312E receiver, it can be used to
trigger the power management circuitry of the
computer to power up the microprocessor, and
bring the SD pin of the SP312E to a logic high,
taking it out of the shutdown mode. The receiver
propagation delay is typically 1µs. The enable
time for V+ and V– is typically 2ms. After V+ and
V– have settled to their final values, a signal can
be sent back to the modem on the data terminal
ready (DTR) pin signifying that the computer is
ready to accept and transmit data.
SD
0
0
1
1
EN
0
1
0
1
Power
Up/Down
Down
Down
Up
Up
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 9. 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.
Receiver
Outputs
Enable
Tri–state
Enable
Tri–state
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
Table 1. Wake-up Function Truth Table.
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
8
© Copyright 2002 Sipex Corporation
R
RS
S
R
RC
C
SW2
SW2
SW1
SW1
Device
Under
Test
C
CS
S
DC Power
Source
Figure 9. ESD Test Circuit for Human Body Model
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 10. There are
two methods within IEC1000-4-2, the Air
Discharge method and the Contact Discharge
method.
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 function of the
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 for IEC1000-4-2.
Figure 10. ESD Test Circuit for IEC1000-4-2
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
9
© Copyright 2002 Sipex Corporation
i➙
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.
30A
The circuit models in Figures 9 and 10 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 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.
15A
0A
t=0ns
t=30ns
t➙
Figure 11. ESD Test Waveform for IEC1000-4-2
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.
For the Human Body Model, the current limiting
resistor (RS) and the source capacitor (CS) are
1.5kΩ an 100pF, respectively. For IEC-1000-42, the current limiting resistor (RS) and the source
capacitor (CS) are 330Ω an 150pF, respectively.
The higher CS value and lower RS value in the
IEC1000-4-2 model are more stringent 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.
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
SP202E
Family
Driver Outputs
Receiver Inputs
HUMAN BODY
MODEL
Air Discharge
±15kV
±15kV
±15kV
±15kV
IEC1000-4-2
Direct Contact
±8kV
±8kV
Level
4
4
Table 2. Transceiver ESD Tolerance Levels
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
10
© Copyright 2002 Sipex Corporation
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
E
H
D
A
Ø
e
B
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Rev. 06/20/02
A1
L
14–PIN
16–PIN
18–PIN
20–PIN
24–PIN
28–PIN
A
0.090/0.104
(2.29/2.649))
0.090/0.104
(2.29/2.649)
0.090/0.104
(2.29/2.649))
0.090/0.104
(2.29/2.649)
0.090/0.104
(2.29/2.649)
0.090/0.104
(2.29/2.649)
A1
0.004/0.012
(0.102/0.300)
0.004/0.012
(0.102/0.300)
0.004/0.012
(0.102/0.300)
0.004/0.012
(0.102/0.300)
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)
0.013/0.020
(0.330/0.508)
0.013/0.020
(0.330/0.508)
0.013/0.020
(0.330/0.508)
0.013/0.020
(0.330/0.508)
D
0.348/0.363
(8.83/9.22)
0.398/0.413
(10.10/10.49)
0.447/0.463
(11.35/11.74)
0.496/0.512
(12.60/13.00)
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)
0.291/0.299
(7.402/7.600)
0.291/0.299
(7.402/7.600)
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)
0.050 BSC
(1.270 BSC)
0.050 BSC
(1.270 BSC))
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)
0.394/0.419
(10.00/10.64)
0.394/0.419
(10.00/10.64)
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)
0.016/0.050
(0.406/1.270)
0.016/0.050
(0.406/1.270)
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°)
0°/8°
(0°/8°)
0°/8°
(0°/8°)
0°/8°
(0°/8°)
0°/8°
(0°/8°)
SP202E Series High Performance RS232 Transceivers
11
© Copyright 2002 Sipex Corporation
PACKAGE: PLASTIC
SMALL OUTLINE (SOIC)
(NARROW)
E
H
h x 45°
D
A
Ø
e
B
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Rev. 06/20/02
A1
L
8–PIN
14–PIN
16–PIN
A
0.053/0.069
(1.346/1.748)
0.053/0.069
(1.346/1.748)
0.053/0.069
(1.346/1.748)
A1
0.004/0.010
(0.102/0.249
0.004/0.010
(0.102/0.249)
0.004/0.010
(0.102/0.249)
B
0.014/0.019
(0.35/0.49)
0.013/0.020
(0.330/0.508)
0.013/0.020
(0.330/0.508)
D
0.189/0.197
(4.80/5.00)
0.337/0.344
0.386/0.394
(8.552/8.748) (9.802/10.000)
E
0.150/0.157
(3.802/3.988)
0.150/0.157
(3.802/3.988)
0.150/0.157
(3.802/3.988)
e
0.050 BSC
(1.270 BSC)
0.050 BSC
(1.270 BSC)
0.050 BSC
(1.270 BSC)
H
0.228/0.244
(5.801/6.198)
0.228/0.244
(5.801/6.198)
0.228/0.244
(5.801/6.198)
h
0.010/0.020
(0.254/0.498)
0.010/0.020
(0.254/0.498)
0.010/0.020
(0.254/0.498)
L
0.016/0.050
(0.406/1.270)
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°)
0°/8°
(0°/8°)
SP202E Series High Performance RS232 Transceivers
12
© Copyright 2002 Sipex Corporation
PACKAGE: PLASTIC SHRINK
SMALL OUTLINE
(SSOP)
E
H
D
A
Ø
e
B
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
Rev. 06/20/02
A1
L
20–PIN
24–PIN
28–PIN
A
0.068/0.078
(1.73/1.99)
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)
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)
0.010/0.015
(0.25/0.38)
D
0.278/0.289
(7.07/7.33)
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)
0.205/0.212
(5.20/5.38)
e
0.0260 BSC
(0.65 BSC)
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)
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)
0.022/0.037
(0.55/0.95)
Ø
0°/8°
(0°/8°)
0°/8°
(0°/8°)
0°/8°
(0°/8°)
SP202E Series High Performance RS232 Transceivers
13
© Copyright 2002 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
L
B1
B
e = 0.100 BSC
(2.540 BSC)
Ø
eA = 0.300 BSC
(7.620 BSC)
ALTERNATE
END PINS
(BOTH ENDS)
DIMENSIONS (Inches)
Minimum/Maximum
(mm)
16–PIN
18–PIN
20–PIN
A2
0.115/0.195
(2.921/4.953)
0.115/0.195
(2.921/4.953)
0.115/0.195
(2.921/4.953)
B
0.014/0.022
(0.356/0.559)
0.014/0.022
(0.356/0.559)
0.014/0.022
(0.356/0.559)
B1
0.045/0.070
(1.143/1.778)
0.045/0.070
(1.143/1.778)
0.045/0.070
(1.143/1.778)
C
0.008/0.014
(0.203/0.356)
0.008/0.014
(0.203/0.356)
0.008/0.014
(0.203/0.356)
D
Rev. 06/20/02
0.780/0.800
0.880/0.920
0.980/1.060
(19.812/20.320) (22.352/23.368) (24.892/26.924)
E
0.300/0.325
(7.620/8.255)
0.300/0.325
(7.620/8.255)
0.300/0.325
(7.620/8.255)
E1
0.240/0.280
(6.096/7.112)
0.240/0.280
(6.096/7.112)
0.240/0.280
(6.096/7.112)
L
0.115/0.150
(2.921/3.810)
0.115/0.150
(2.921/3.810)
0.115/0.150
(2.921/3.810)
Ø
0°/ 15°
(0°/15°)
0°/ 15°
(0°/15°)
0°/ 15°
(0°/15°)
SP202E Series High Performance RS232 Transceivers
14
© Copyright 2002 Sipex Corporation
ORDERING INFORMATION
Model ....................................................................................... Temperature Range ................................................................................ Package
SP202ECN ..................................................................................... 0°C to +70°C ........................................................................... 16–pin N–SOIC
SP202ECP ..................................................................................... 0°C to +70°C ....................................................................... 16–pin Plastic DIP
SP202ECT ..................................................................................... 0°C to +70°C ................................................................................ 16–pin SOIC
SP202EEN ................................................................................... –40°C to +85°C .......................................................................... 16–pin N-SOIC
SP202EEP ................................................................................... –40°C to +85°C ..................................................................... 16–pin Plastic DIP
SP202EET ................................................................................... –40°C to +85°C .............................................................................. 16–pin SOIC
SP232ECN ..................................................................................... 0°C to +70°C ........................................................................... 16–pin N–SOIC
SP232ECP ..................................................................................... 0°C to +70°C ....................................................................... 16–pin Plastic DIP
SP232ECT ..................................................................................... 0°C to +70°C ................................................................................ 16–pin SOIC
SP232EEN ................................................................................... –40°C to +85°C .......................................................................... 16–pin N-SOIC
SP232EEP ................................................................................... –40°C to +85°C ..................................................................... 16–pin Plastic DIP
SP232EET ................................................................................... –40°C to +85°C .............................................................................. 16–pin SOIC
SP233ECP
SP233ECT
SP233EEP
SP233EET
..................................................................................... 0°C to +70°C ....................................................................... 20–pin Plastic DIP
..................................................................................... 0°C to +70°C ................................................................................ 20–pin SOIC
................................................................................... –40°C to +85°C ..................................................................... 20–pin Plastic DIP
................................................................................... –40°C to +85°C .............................................................................. 20–pin SOIC
SP310ECP
SP310ECT
SP310ECA
SP310EEP
SP310EET
SP310EEA
..................................................................................... 0°C to +70°C ....................................................................... 18–pin Plastic DIP
..................................................................................... 0°C to +70°C ................................................................................ 18–pin SOIC
..................................................................................... 0°C to +70°C ............................................................................... 20–pin SSOP
................................................................................... –40°C to +85°C ..................................................................... 18–pin Plastic DIP
................................................................................... –40°C to +85°C .............................................................................. 18–pin SOIC
................................................................................... –40°C to +85°C ............................................................................. 20–pin SSOP
SP312ECP
SP312ECT
SP312ECA
SP312EEP
SP312EET
SP312EEA
..................................................................................... 0°C to +70°C ....................................................................... 18–pin Plastic DIP
..................................................................................... 0°C to +70°C ................................................................................ 18–pin SOIC
..................................................................................... 0°C to +70°C ............................................................................... 20–pin SSOP
................................................................................... –40°C to +85°C ..................................................................... 18–pin Plastic DIP
................................................................................... –40°C to +85°C .............................................................................. 18–pin SOIC
................................................................................... –40°C to +85°C ............................................................................. 20–pin SSOP
Please consult the factory for pricing and availability on a Tape-On-Reel option.
Corporation
SIGNAL PROCESSING EXCELLENCE
Sipex Corporation
Headquarters and
Sales Office
22 Linnell Circle
Billerica, MA 01821
TEL: (978) 667-8700
FAX: (978) 670-9001
e-mail: [email protected]
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.
Rev. 06/20/02
SP202E Series High Performance RS232 Transceivers
15
© Copyright 2002 Sipex Corporation