st485cd STMicroelectronics, st485cd Datasheet - Page 4

• Manufacturer Part Number: st485cd
• Description: Low Power Rs-485/rs-422 Transceiver
• Manufacturer: STMicroelectronics

Truth tables
2
Table 2.
Note:
Table 3.
Note:
4/19
RE
RE
X
X
X
H
L
L
L
Truth tables
Truth table (driver)
X = Don’t care; Z = High impedance
Truth table (receiver)
X = Don’t care; Z = High impedance
Inputs
Inputs
DE
DE
H
H
L
L
L
L
L
INPUTS OPEN
≥
≤
+0.2V
A-B
-0.2V
DI
H
X
L
X
B
H
Z
L
Outputs
Outputs
RO
H
H
L
Z
A
H
L
Z
ST485