Datasheet

ST232B - ST232C Electrical characteristics
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3 Electrical characteristics
Table 4. Electrical characteristics
(C
1
- C
4
= 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
I
SUPPLY
V
CC
Power supply current No Load, T
A
= 25°C 5 10 mA
Table 5. Transmitter electrical characteristics
(C
1
- C
4
= 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
TOUT
Output voltage swing
All transmitter outputs are loaded
with 3kΩ to GND
± 5 ± 7.8 V
I
TIL
Input leakage current ± 40 µA
V
TIL
Input logic threshold low 0.8 V
V
TIH
Input logic threshold high 2 V
SR
T
Transition slew rate
T
A
= 25°C, V
CC
= 5V
R
L
= 3 to 7kΩ, C
L
= 50 to 2500pF
(1)
730V/µs
D
R
Data rate
(2)
120 220 kbits/s
R
TOUT
Transmitter output resistance V
CC
= V+ = V- = 0V V
OUT
= ± 2V 300 Ω
I
SC
Transmitter output short circuit
current
One T
XOUT
to GND ±10 ±60 mA
1. Measured from 3 V to -3 V or from -3 V to 3 V
2. One transmitter output is loaded with R
L
= 3 kΩ to 7 kΩ, C
L
= 50 to 1000 pF