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November 2003
s
ESD PROTECTION FOR RS-232 I/O PINS:
15KV HUMAN BODY MODEL
s
GUARANTEED 230kbps DATE RATE
s
GUARANTEED SLEW RATE RANGE 3 to
30V/
s
s
OPERATE FROM A SINGLE 5V POWER
SUPPLY
DESCRIPTION
The ST202E/ST232E are a 2 driver 2 receiver
devices
designed
for
RS-232
and
V.28
communications in harsh environments. Each
transmitter output and receiver input is protected
against
15KV electrostatic discharge (ESD)
shocks. The drivers meet all EIA/TIA-232E and
CCITT V.28 specifications at data rates up to
230Kbps, when loaded in accordance with the
EIA/TIA-232E specification. The ST202E/232E
use a single 5V supply voltage.
The ST232E operates with four 1
F capacitors,
while the ST202E operates with four 0.1
F
capacitors, further reducing cost and board space.
ORDERING CODES
Type
Temperature
Range
Package
Comments
ST202ECN
ST232ECN
0 to 70 C
DIP-16
25 parts per tube / 40 tube per box
ST202EBN
ST232EBN
-40 to 85 C
DIP-16
25 parts per tube / 40 tube per box
ST202EAN
ST232EAN
-40 to 125 C
DIP-16
25 parts per tube / 40 tube per box
ST202ECD
ST232ECD
0 to 70 C
SO-16 (Tube)
50 parts per tube / 20 tube per box
ST202EBD
ST232EBD
-40 to 85 C
SO-16 (Tube)
50 parts per tube / 20 tube per box
ST202EAD
ST232EAD
-40 to 125 C
SO-16 (Tube)
50 parts per tube / 20 tube per box
ST202ECDR
ST232ECDR
0 to 70 C
SO-16 (Tape & Reel)
2500 parts per reel
ST202EBDR
ST232EBDR
-40 to 85 C
SO-16 (Tape & Reel)
2500 parts per reel
ST202EADR
ST232EADR
-40 to 125 C
SO-16 (Tape & Reel)
2500 parts per reel
ST202ECW
ST232ECW
0 to 70 C
SO-16 Large (Tube)
49 parts per tube / 25 tube per box
ST202EBW
ST232EBW
-40 to 85 C
SO-16 Large (Tube)
49 parts per tube / 25 tube per box
ST202EAW
ST232EAW
-40 to 125 C
SO-16 Large (Tube)
49 parts per tube / 25 tube per box
ST202ECWR
ST232ECWR
0 to 70 C
SO-16 Large (Tape & Reel)
1000 parts per reel
ST202EBWR
ST232EBWR
-40 to 85 C
SO-16 Large (Tape & Reel)
1000 parts per reel
ST202EAWR
ST232EAWR
-40 to 125 C
SO-16 Large (Tape & Reel)
1000 parts per reel
ST202ECTR
ST232ECTR
0 to 70 C
TSSOP16 (Tape & Reel)
2500 parts per reel
ST202EBTR
ST232EBTR
-40 to 85 C
TSSOP16 (Tape & Reel)
2500 parts per reel
ST202EATR
ST232EATR
-40 to 125 C
TSSOP16 (Tape & Reel)
2500 parts per reel
ST202E
ST232E
15KV ESD PROTECTED
5V RS-232 TRANSCEIVER
SOP Large
DIP
SOP
TSSOP
ST202E/ST232E
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PIN CONFIGURATION
PIN DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
PlN N
SYMBOL
NAME AND FUNCTION
1
C
1
+
Positive Terminal for the first Charge Pump Capacitor
2
V+
Doubled Voltage Terminal
3
C
1
-
Negative Terminal for the first Charge Pump Capacitor
4
C
2
+
Positive Terminal for the second Charge Pump Capacitor
5
C
2
-
Negative Terminal for the second Charge Pump Capacitor
6
V-
Inverted Voltage Terminal
7
T2
OUT
Second Transmitter Output Voltage
8
R2
IN
Second Receiver Input Voltage
9
R2
OUT
Second Receiver Output Voltage
10
T2
IN
Second Transmitter Input Voltage
11
T1
IN
First Transmitter Input Voltage
12
R1
OUT
First Receiver Output Voltage
13
R1
IN
First Receiver Input Voltage
14
T1
OUT
First Transmitter Output Voltage
15
GND
Ground
16
V
CC
Supply Voltage
Symbol
Parameter
Value
Unit
V
CC
Supply Voltage
-0.3 to 6
V
V+
Extra Positive Voltage
(V
CC
- 0.3) to 14
V
V-
Extra Negative Voltage
-14 to 0.3
V
T
IN
Transmitter Input Voltage Range
-0.3 to (V
+
+ 0.3)
V
R
IN
Receiver Input Voltage Range
30
V
T
OUT
Transmitter Output Voltage Range
(V
-
- 0.3) to (V
+
+ 0.3)
V
R
OUT
Receiver Output Voltage Range
-0.3 to (V
CC
+ 0.3)
V
T
SCTOUT
Short Circuit Duration on T
OUT
infinite
T
stg
Storage Temperature Range
-65 to + 150
C
ST202E/ST232E
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ESD PERFORMANCE: TRANSMITTER OUTPUTS, RECEIVER INPUTS
Note: All test versus GND.
ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F for ST202E, C
1
- C
4
= 1
F for ST232E, V
CC
= 5V
10%, T
A
= -40 to 125C,
unless otherwise specified. Typical values are referred to T
A
= 25C)
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F for ST202E, C
1
- C
4
= 1
F for ST232E, V
CC
= 5V
10%, T
A
= -40 to 125C,
unless otherwise specified. Typical values are referred to T
A
= 25C)
Note 1: Measured from 3V to -3V or from -3V to 3V.
Note2: One transmitter output is loaded with R
L
= 3K
to 7K
, C
L
= 50 to 1000pF
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
ESD
ESD Protection Voltage
Human Body Model
15
KV
ESD
ESD Protection Voltage
IEC 1000-4-2 (Contact Discharge)
6
KV
ESD
ESD Protection Voltage
IEC 1000-4-2 (Air Discharge)
8
KV
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
I
SUPPLY
V
CC
Power Supply Current
No Load,
T
A
= 25C
5
10
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
TOUT
Output Voltage Swing
All Transmitter outputs are loaded with
3K
to GND
5
9
V
I
TIL
Input Leakage Current
1
A
V
TIL
Input Logic Threshold Low
0.8
V
V
TIH
Input Logic Threshold High
2
V
SR
T
Transition Slew Rate
T
A
= 25C,
V
CC
= 5V
R
L
= 3 to 7K
,
C
L
= 50 to 1000pF
(Note1)
3
6
30
V/
s
D
R
Data Rate
R
L
= 3 to 7K
,
C
L
= 50 to 1000pF
one transmitter switching
230
400
Kbits/s
R
TOUT
Transmitter Output
Resistance
V
CC
= V+ = V- = 0V
V
OUT
=
2V
300
I
SC
Transmitter Output Short
Circuit Current
10
60
mA
t
DT
Transmitter Propagation
Delay
R
L
= 3 to 7K
,
C
L
= 50 to 2500pF
All transmitter loaded
2
A
ST202E/ST232E
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RECEIVER ELECTRICAL CHARACTERISTICS
(C
1
- C
4
= 0.1
F for ST202E, C
1
- C
4
= 1
F for ST232E, V
CC
= 5V
10%, T
A
= -40 to 125C,
unless otherwise specified. Typical values are referred to T
A
= 25C)
APPLICATION CIRCUITS (note 1, note 2)
Note 1: C
1-4
capacitors can even be 1
F ones.
Note 2: C
1-4
can be common or biased capacitors.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
RIN
Receiver Input Voltage
Operating Range
-30
30
V
R
RIN
RS-232 Input Resistance
T
A
= 25C, V
CC
= 5 V
3
5
7
K
V
RIL
RS-232 Input Logic
Threshold Low
T
A
= 25C, V
CC
= 5 V
0.8
1.2
V
V
RIH
RS-232 Input Logic
Threshold High
T
A
= 25C, V
CC
= 5 V
1.7
2.4
V
V
RIHYS
RS-232 Input Hysteresis
V
CC
= 5V
0.2
0.5
1
V
V
ROL
TTL/CMOS Output Voltage
Low
I
OUT
= 3.2mA
0.4
V
V
ROH
TTL/CMOS Output Voltage
High
I
OUT
= -1mA
3.5
V
CC
-0.4
V
t
DR
Receiver Propagation Delay C
L
= 150pF
0.5
10
s
ST202E/ST232E
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CAPACITANCE VALUE (
F)
TYPICAL PERFORMANCE CHARACTERISTICS (unless otherwise specified T
j
= 25C)
Figure 1 : Supply Current vs Temperature
Figure 2 : Data Rate vs Temperature
Figure 3 : Receiver Propagation Delay
Figure 4 : Driver Propagation Delay
DEVICES
C1
C2.
C3
C4
C5
ST202E
0.1
0.1
0.1
0.1
0.1
ST232E
1
1
1
1
1
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