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ST202 Datasheet(PDF) 6 Page - STMicroelectronics

Part No. ST202
Description  5V Powered multi-channel RS-232 drivers and receivers
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST202 Datasheet(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
ST202
6/18
Table 5.
Receiver electrical characteristics
(C1 - C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85°C, unless otherwise specified. Typical
values are referred to TA = 25°C).
Symbol
Parameter
Test
Min.
Typ.
Max.
Unit
VRIN
Receiver input voltage
operating range
-30
30
V
RRIN
RS-232 Input resistance
TA = 25°C
3
5
7
K
VRIL
RS-232 Input threshold low
0.8
1.3
V
VRIH
RS-232 Input threshold high
1.8
2.4
V
VRIHYS
RS-232 Input hysteresis
VCC = 5V
0.2
0.5
1
V
VROL
TTL/CMOS Output voltage low
IOUT = 3.2mA (to VCC)0.2
0.4
V
VROH
TTL/CMOS Output voltage high IOUT = 1mA (to GND)
3.5
VCC-0.2
V
ISCR
Receiver output short circuit
current
to GND
2
10
mA
to VCC
10
30
tDR
Propagation delay time
CL = 150pF
(1)
0.1
0.5
µs
1.
RS-232 in to TTL-CMOS out (from 50% to 50%)


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