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ST491ACN Folha de dados(PDF) 2 Page - STMicroelectronics

Nome de Peças ST491ACN
Descrição Electrónicos  LOW POWER HIGH SPEED RS-485/RS-422 TRANSCEIVER
PDF  12 Pages
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Fabricante Electrônico  STMICROELECTRONICS [STMicroelectronics]
Página de início  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST491ACN Folha de dados(HTML) 2 Page - STMicroelectronics

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ST491A
2/12
PIN CONFIGURATION
PIN DESCRIPTION
TRUTH TABLE (DRIVER)
X= Don’t Care; Z=High Impedance
TRUTH TABLE (RECEIVER)
?= Irrelevant; X= Don’t Care; Z=High Impedance
PlN N°
SYMBOL
NAME AND FUNCTION
1
NC
Not Connected
2
RO
Receiver Output.
3
RE
Receiver Output Enable
4
DE
Driver Output Enable
5
DI
Inverting Driver Input.
6
GND
Ground
7
GND
Ground
8
NC
Not Connected
9
Y
Non-inverting Driver Output
10
Z
Inverting Driver Output
11
B
Inverting Receiver Input
12
A
Non-inverting Receiver Input
13
NC
Not Connected
14
VCC
Supply Voltage
INPUT
OUTPUTS
DI
DE
Y
Z
LHL
H
HHH
L
XL
Z
Z
INPUT
OUTPUT
A-B
RE
RO
≥ -0.2V
L
H
between -0.2V to 0.2V
L
?
≤ -0.2V
L
L
OPEN
L
H
XH
Z



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