Datasheet

Electrical characteristics ST202EB, ST202EC, ST232EB, ST232EC
6/18 DocID6900 Rev 17
Table 7. Receiver electrical characteristics
(C
1
- C4 = 0.1 µF, V
CC
= 5 V ± 10 %, T
A
= -40 to 85 °C, unless otherwise specified;
typical values are referred to T
A
= 25 °C)
Symbol Parameter Test condition Min. Typ. Max. Unit
V
RIN
Receiver input voltage
operating range
-30 30 V
R
RIN
RS-232 input resistance T
A
= 25 °C, V
CC
= 5 V 3 5 7 kΩ
V
RIL
RS-232 input logic threshold
low
T
A
= 25 °C, V
CC
= 5 V 0.8 1.2
V
V
RIH
RS-232 input logic threshold
high
T
A
= 25 °C, V
CC
= 5 V 1.7 2.4
V
RIHYS
RS-232 input hysteresis V
CC
= 5 V 0.2 0.5 1
V
ROL
TTL/CMOS output voltage low I
OUT
= 3.2 mA 0.4
V
ROH
TTL/CMOS output voltage high I
OUT
= -1 mA 3.5 V
CC
-0.4
t
DR
Receiver propagation delay C
L
= 150 pF 0.5 10 µs