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Número de pieza
componentes Descripción
ST490ACDR Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
ST490ACDR
Low power high speed RS-485/RS-422 transceiver
STMicroelectronics
ST490ACDR Datasheet PDF : 17 Pages
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Truth tables
2
Truth tables
Table 2.
Note:
Truth table (driver)
Inputs
DI
L
H
X = Don’t care; Z = High impedance
Table 3.
Note:
Truth table (receiver)
Differential inputs
A-B
≥
-0.2V
between -0.2V to 0.2V
≤
-0.2V
OPEN
X = Don’t care; Z = High impedance
ST490A
Outputs
Y
Z
L
H
H
L
Outputs
RO
H
?
L
H
4/17
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