ST232N Ver la hoja de datos (PDF) - STMicroelectronics
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ST232N Datasheet PDF : 11 Pages
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ST232
ELECTRICAL CHARACTERISTICS
(C1 -C4 = 0.1µF, VCC = 5V ± 10% TA = -40 to 85 oC, unless otherwise specified.
Typical Valus are referred to TA = 25 oC)
Symb ol
Parameter
ISUPPLY VCC Power Supply Current
T est Cond it ion s
No Load, TA = 25 oC
Min.
Va l u e
T yp.
5
Max.
10
Un it
mA
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C1 -C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85 oC, unless otherwise specified.
Typical Valus are referred to TA = 25 oC)
Symb ol
Parameter
T est Cond it ion s
Va l u e
VTOUT Output Voltage Swing
All Transmitter outputs are
loaded with 3KΩ to GND
Min.
±5
T yp.
±7.8
ITIL Logic Pull-Up Current
TIN = 0 V
15
VTIL Input Logic Threshold Low
VTIH Input Logic Threshold High
SRT Transition Slew Rate
2
TA = 25 oC, VCC = 5 V,
7
RL = 3 to 7 KΩ,
CL= 50 to 2500 pF (Note 1)
DR Data Rate
(Note 2)
120 220
RTOUT Transmitter Output Resistance
VCC = V+ = V- = 0V
300
VOUT = ± 2 V
ISC Transmitter Output Short Circuit
one TXOUT to GND
±10
Current
Note 1: Measured from 3V to -3Vor from -3V to 3V.
Note 2: One trasmitter output is loaded with RL = 3KΩ to7KΩ, CL = 50 to 1000pF
Max.
200
0.8
30
±60
Un it
V
µA
V
V
V/µs
Kbits/s
Ω
mA
RECEIVER ELECTRICAL CHARACTERISTICS
(C1 -C4 = 0.1µF, VCC = 5V ± 10%, TA = -40 to 85 oC, unless otherwise specified.
Typical Valus are referred to TA = 25 oC)
Symb ol
Parameter
T est Cond it ion s
Va l u e
Min. Typ.
VRIN
RRIN
Receiver Input Voltage Operating
Range
RS-232 Input Resistance
VRIL RS-232 Input Logic Threshold Low
VRIH RS-232 Input Logic Threshold High
VRIHYS RS-232 Input Hysteresis
VROL TTL/CMOS Output Voltage Low
VROH TTL/CMOS Output Voltage High
tdR Propagation Delay Time
ISCR Receiver Output Short Circuit Current
Note 1: RS-232 IN to TTL-CMOS OUT (from 50% to 50%)
TA = 25 oC, VCC = 5 V,
VRIN = 5 V
TA = 25 oC, VCC = 5 V
TA = 25 oC, VCC = 5 V
VCC = 5 V
IOUT = 3.2mA (to VCC)
IOUT = 1mA (to GND)
CL=150pF (Note 1)
-30
3
5
0.8
1.2
1.7
0.2
0.5
3.5 VCC-0.4
0.3
±10
Max.
30
7
2.4
1
0.4
1
Un it
V
KΩ
V
V
V
V
V
µs
mA
3/11
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