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ST491ACN Fiches technique(PDF) 4 Page - STMicroelectronics

No de pièce ST491ACN
Description  Low power high speed RS-485/RS-422 transceiver
PDF  17 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST491ACN Fiches technique(HTML) 4 Page - STMicroelectronics

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Truth tables
ST491A
4/17
2
Truth tables
Note:
X = Don’t care; Z = High impedance
Note:
?=Irrelevant; X = Don’t care; Z = High impedance
Table 2.
Truth table (driver)
Inputs
Outputs
DI
DE
Y
Z
LHLH
HH
H
L
XL
ZZ
Table 3.
Truth table (receiver)
Inputs
Outputs
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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