ST232B_08 Datasheet, PDF (6/19 Pages) STMicroelectronics – 5 V powered multi-channel RS-232 drivers and receiversr

Electrical characteristics
ST232B - ST232C
Table 6.
Receiver electrical characteristics
(C₁ - 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
R_RIN
V_RIL
V_RIH
V_RIHYS
V_ROL
V_ROH
I_SCR
t_DR
RS-232 input resistance
RS-232 input threshold low
RS-232 input threshold high
RS-232 input hysteresis
TTL/CMOS output voltage low
TTL/CMOS output voltage high
Receiver output short circuit
current
Receiver propagation delay
T_A = 25°C, V_CC = 5 V,
V_RIN = 5V
T_A = 25°C, V_CC = 5 V
T_A = 25°C, V_CC = 5 V
V_CC = 5V
I_OUT = 3.2mA (to V_CC)
I_OUT = -1mA (to GND)
C_L = 150pF ⁽¹⁾
1. RS-232 in to TTL-CMOS out (from 50% to 50%)
-30
30
V
3
5
7
kΩ
0.8
1.2
V
1.7
2.4
V
0.2
0.5
1
V
0.4
V
3.5 V_CC-0.4
V
±10
mA
0.3
1
µs
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