Datasheet

ST3232B - ST3232C Electrical characteristics
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3 Electrical characteristics
Table 4. Electrical characteristics (C
1
- C
4
= 0.1 µF, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C, unless
otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
I
SUPPLY
V
CC
Power supply current
No Load, V
CC
= 3V ± 10%, T
A
= 25°C 0.3 1 mA
No Load, V
CC
= 5V ± 10%, T
A
= 25°C 1 2 mA
Table 5. Logic input (C
1
- C
4
= 0.1 µF, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C, unless otherwise
specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
TIL
Input logic threshold low T-IN
(1)
0.8 V
V
TIH
Input logic threshold high
V
CC
= 3.3V 2
V
V
CC
= 5V 2.4
I
IL
Input leakage current T-IN ± 0.01 ± 1µA
1. Transmitter input hysteresis is typically 250mV.
Table 6. Transmitter (C
1
- C
4
= 0.1 µF tested at 3.3 V ± 10 %, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C,
unless otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
TOUT
Output voltage swing
All transmitter outputs are loaded with
3kΩ to GND
± 5 ± 5.4 V
R
TOUT
Transmitter output
resistance
V
CC
= V+ = V- = 0V, V
OUT
= ± 2V 300 10M Ω
I
TSC
Output short circuit current V
CC
= 3V or 5V, V
OUT
= ± 12 ± 60 mA
Table 7. Receiver (C
1
- C
4
= 0.1 µF tested at 3.3 V ±10 %, V
CC
= 3 V to 5.5 V, T
A
= -40 to 85 °C,
unless otherwise specified. Typical values are referred to T
A
= 25 °C)
Symbol Parameter Test conditions Min. Typ. Max. Unit
V
RIN
Receiver input voltage operating
range
-25 25 V
V
RIL
RS-232 Input threshold low
T
A
= 25°C, V
CC
= 3.3V 0.6 1.1
V
T
A
= 25°C, V
CC
= 5V 0.8 1.5
V
RIH
RS-232 Input threshold high
T
A
= 25°C, V
CC
= 3.3V 1.5 2.4
V
T
A
= 25°C, V
CC
= 5V 1.8 2.4
V
RIHYS
Input hysteresis 0.3 V
R
RIN
Input resistance T
A
= 25°C 3 5 7 kΩ
V
ROL
TTL/CMOS Output voltage low I
OUT
= 1.6mA 0.4 V
V
ROH
TTL/CMOS Output voltage high I
OUT
= -1mA V
CC
-0.6 V
CC
-0.1 V