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ST485AB Scheda tecnica(PDF) 4 Page - STMicroelectronics

Il numero della parte ST485AB
Spiegazioni elettronici  Very high speed low power RS-485/RS-422 transceiver
PDF  19 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST485AB Scheda tecnica(HTML) 4 Page - STMicroelectronics

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Truth tables
ST485AB
4/19
2
Truth tables
Note:
X = Don’t care; Z = High impedance
Note:
X = Don’t care; Z = High impedance
Table 3.
Truth table (driver)
Inputs
Outputs
Mode
RE
DE
DI
B
A
A
XH
H
L
H
Normal
XH
L
H
L
Normal
LL
X
Z
Z
Normal
Table 4.
Truth table (receiver)
Inputs
Outputs
Mode
RE
DE
A-B
RO
LL
≥ -0.2 V
H
Normal
LL
≤-0.2 V
L
Normal
L
L
Inputs open
H
Normal



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