Datasheet

Truth tables
ST3485EB, ST3485EC, ST3485EI, ST3485EIY
4/24
DocID9102 Rev 11
2 Truth tables
Table 3: Truth table (driver)
Inputs
Outputs
Mode
RE
DE
DI
B
A
X
H
H
L
H
Normal
L
H
L
L
L
X
Z
Z
H
Shutdown
Note: X = “don’t care”; Z = high impedance
Table 4: Truth table (receiver)
Inputs
Output
Mode
RE
DE
A-B
RO
L
L
≥ 0.2 V
H
Normal
≤ -0.2 V
L
Inputs open
H
H
X
Z
Shutdown
Note: X = “don’t care”; Z = high impedance