ST491ACD Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
ST491ACD Datasheet PDF : 12 Pages
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ST491A
PIN CONFIGURATION
PIN DESCRIPTION
PlN N°
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SYMBOL
NC
RO
RE
DE
DI
GND
GND
NC
Y
Z
B
A
NC
VCC
NAME AND FUNCTION
Not Connected
Receiver Output.
Receiver Output Enable
Driver Output Enable
Inverting Driver Input.
Ground
Ground
Not Connected
Non-inverting Driver Output
Inverting Driver Output
Inverting Receiver Input
Non-inverting Receiver Input
Not Connected
Supply Voltage
TRUTH TABLE (DRIVER)
INPUT
DI
DE
L
H
H
H
X
L
X= Don’t Care; Z=High Impedance
OUTPUTS
Y
Z
L
H
H
L
Z
Z
TRUTH TABLE (RECEIVER)
INPUT
OUTPUT
A-B
RE
RO
≥ -0.2V
L
H
between -0.2V to 0.2V
L
?
≤ -0.2V
L
L
OPEN
L
H
X
H
Z
?= Irrelevant; X= Don’t Care; Z=High Impedance
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