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ST3237 Datasheet(PDF) 6 Page - STMicroelectronics

No. de Pieza. ST3237
Descripción  3 TO 5.5V, 250KBPS, RS-232 TRANSCEIVER WITH STAND-BY
Descarga  15 Pages
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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ST3237 Datasheet(HTML) 6 Page - STMicroelectronics

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Electrical characteristics
ST3237
6/15
3
Electrical characteristics
Table 3.
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 conditions
Min.
Typ.
Max.
Unit
ISUPPLY
VCC power supply current
No load
VCC = 3V or 5.0V TA =
25°C
0.5
2
mA
ISHDN
Shutdown supply current
SHDN=GNDTA = 25°C
1
10
µA
Table 4.
Logic input (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 Conditions
Min.
Typ.
Max.
Unit
VTIL
Input logic threshold low
(1)
T-IN, VHSCI, EN, SHDN
0.8
V
VTIH
Input logic threshold high
(1)
VCC = 3.3V
VCC = 5V
2
2.4
V
V
IIL
Input leakage current
T-IN, VHSCI, EN, SHDN
± 0.01
± 1.0
µA
IOL
Output leakage current
Receiver disabled
± 0.05
± 10
µA
VOL
Output voltage low
IOUT = 1.6mA
0.4
V
VOH
Output voltage high
IOUT = -1mA
VCC-
0.6
VCC-
0.1
V
1.
Transmitter input hysteresis is typically 250mV
Table 5.
Transmitter (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 conditions
Min.
Typ.
Max.
Unit
VTOUT
Output voltage swing
All transmitter outputs are loaded with
3K
Ω to GND
± 5
± 5.4
V
RTOUT
Transmitter output
resistance
VCC = V+ = V- = 0VVOUT = ± 2V
3000
W
ISC
Output short circuit
current
± 25
± 60
mA


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