ST3232C Ver la hoja de datos (PDF) - STMicroelectronics
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ST3232C Datasheet PDF : 18 Pages
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ST3232B - ST3232C
3
Electrical characteristics
Electrical characteristics
Table 4.
Symbol
Electrical characteristics (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless
otherwise specified. Typical values are referred to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
ISUPPLY
VCC Power supply current
No Load, VCC = 3V ± 10%, TA = 25°C
No Load, VCC = 5V ± 10%, TA = 25°C
0.3
1
mA
1
2
mA
Table 5.
Logic input (C1 - C4 = 0.1 µF, VCC = 3 V to 5.5 V, TA = -40 to 85 °C, unless otherwise
specified. Typical values are referred to TA = 25 °C)
Symbol
Parameter
Test conditions
Min.
Typ. Max. Unit
VTIL
Input logic threshold low
T-IN (1)
0.8
V
VTIH
IIL
Input logic threshold high
Input leakage current
VCC = 3.3V
VCC = 5V
T-IN
2
V
2.4
± 0.01 ± 1
µA
1. Transmitter input hysteresis is typically 250mV.
Table 6.
Symbol
Transmitter (C1 - C4 = 0.1 µF tested at 3.3 V ± 10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 °C,
unless otherwise specified. Typical values are referred to TA = 25 °C)
Parameter
Test conditions
Min. Typ. Max. Unit
VTOUT
RTOUT
ITSC
Output voltage swing
All transmitter outputs are loaded with
3kΩ to GND
±5
Transmitter output
resistance
VCC = V+ = V- = 0V, VOUT = ± 2V
300
Output short circuit current VCC = 3V or 5V, VOUT = ± 12
± 5.4
10M
V
Ω
± 60 mA
Table 7.
Symbol
Receiver (C1 - C4 = 0.1 µF tested at 3.3 V ±10 %, VCC = 3 V to 5.5 V, TA = -40 to 85 °C,
unless otherwise specified. Typical values are referred to TA = 25 °C)
Parameter
Test conditions
Min.
Typ. Max. Unit
VRIN
VRIL
VRIH
VRIHYS
RRIN
VROL
VROH
Receiver input voltage operating
range
RS-232 Input threshold low
RS-232 Input threshold high
Input hysteresis
TA = 25°C, VCC = 3.3V
TA = 25°C, VCC = 5V
TA = 25°C, VCC = 3.3V
TA = 25°C, VCC = 5V
Input resistance
TA = 25°C
TTL/CMOS Output voltage low IOUT = 1.6mA
TTL/CMOS Output voltage high IOUT = -1mA
-25
25
V
0.6
1.1
V
0.8
1.5
1.5
2.4
V
1.8
2.4
0.3
V
3
5
7
kΩ
0.4
V
VCC-0.6 VCC-0.1
V
5/18
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