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ST485ABN 데이터 시트보기 (PDF) - STMicroelectronics
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ST485ABN
Very high speed low power RS-485/RS-422 transceiver
STMicroelectronics
ST485ABN Datasheet PDF : 19 Pages
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Truth tables
2
Truth tables
ST485A
Table 2.
Truth table (driver)
Inputs
RE
DE
DI
X
H
H
X
H
L
L
L
X
Note:
X = Don’t care; Z = High impedance
Table 3.
Truth table (receiver)
Inputs
RE
DE
A-B
L
L
≥
-0.2V
L
L
≤
-0.2V
L
L
INPUTS OPEN
Note:
X = Don’t care; Z = High impedance
Outputs
B
A
L
H
H
L
Z
Z
Outputs
RO
H
L
H
Mode
A
Normal
Normal
Normal
Mode
Normal
Normal
Normal
4/19
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