ST3237CPR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
ST3237CPR Datasheet PDF : 12 Pages
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ST3237
ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Condit ions
Min. Typ. Max. Unit
ISUPPLY VCC Power Supply Current No Load VCC = 3V or 5.0V TA = 25°C
ISHDN Shutdown Supply Current SHDN=GND TA = 25°C
0.5
2
mA
1
10
µA
LOGIC INPUT ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Conditio ns
Min. Typ. Max. Unit
VTIL
VTIH
IIL
IOL
VOL
VOH
Input Logic Threshold Low
(Note 1)
Input Logic Threshold High
(Note 1)
Input Leakage Current
T-IN, VHSCI, EN, SHDN
VCC = 3.3V
VCC = 5V
T-IN, VHSCI, EN, SHDN
Output Leakage Current Receiver Disabled
Output Voltage Low
Output Voltage High
IOUT = 1.6mA
IOUT = -1mA
0.8
V
2
V
2.4
V
± 0.01 ± 1.0 µA
± 0.05 ± 10 µA
0.4
V
VCC-0.6 VCC-0.1
V
Note 1: Transmitter input hysteresis is typically 250mV
TRANSMITTER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Condit ions
Min. Typ. Max. Unit
VTOUT
RTOUT
ISC
Output Voltage Swing
All Transmitter outputs are loaded with
3KΩ to GND
Transmitter Output
Resistance
VCC = V+ = V- = 0V
VOUT = ± 2V
Output Short Circuit Current
± 5 ± 5.4
V
3000
Ω
± 25 ± 60 mA
RECEIVER ELECTRICAL CHARACTERISTICS
(C1 - C4 = 0.1µF tested at 3.3V±10%, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Typical values are referred to TA = 25°C)
Symbol
Parameter
Test Condit ions
Min. Typ. Max. Unit
VRIN
VRIL
Receiver Input Voltage
Operating Range
RS-232 Input Threshold
Low
VRIH RS-232 Input Threshold
High
VRIHYS Input Hysteresis
RRIN Input Resistance
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
VCC = 3.3V
VCC = 5V
VCC = 3.3V
VCC = 5V
TA = 25°C
-25
25
V
0.6
1.2
V
0.8
1.5
V
1.5
2.4
V
1.8
2.4
V
0.3
V
3
5
7
KΩ
4/12
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