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ST3241E Datasheet(PDF) 7 Page - STMicroelectronics

Part No. ST3241E
Description  ±15kV ESD Protected 3 to 5.5V, 400kbps, RS-232 transceiver with auto-powerdown
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST3241E Datasheet(HTML) 7 Page - STMicroelectronics

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ST3241E
Electrical characteristics
7/17
Table 9.
Receiver electrical characteristics
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
VRIN
Receiver input voltage
operating range
-25
25
V
VRIL
RS-232 Input threshold low
TA = 25°C, VCC = 3.3V
TA = 25°C, VCC = 5.0V
0.6
0.8
1.2
1.5
V
VRIH
RS-232 Input threshold high
TA = 25°C, VCC = 3.3V
TA = 25°C, VCC = 5.0V
1.5
1.8
2.4
2.4
V
VRIHYS
Input hysteresis
0.3
V
RRIN
Input resistance
TA = 25°C
3
5
7
K
Table 10.
Timing characteristics
(C1 - C4 = 0.1µF, VCC = 3V to 5.5V, TA = -40 to 85°C, unless otherwise specified.
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
DR
Maximum data rate
RL = 3KΩ, CL= 1000pF
one transmitter switching
250
Kbps
tPHL
tPLH
Receiver propagation delay RIN to ROUT, CL = 150pF
0.15
µs
tT_SKEW Transmitter skew
100
ns
tR_SKEW Receiver skew
300
ns
SRT
Transition slew rate
TA = 25°C RL = 3K to 7KΩ
VCC = 3.3V
measured from +3V to -3V or -3V to +3V
CL = 150pF to 1000pF
CL = 150pF to 2500pF
6
4
30
30
V/
µs
V/
µs


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