Datasheet

Truth tables ST3485EB, ST3485EC
4/21 DocID9102 Rev 6
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
X H H L H Normal
X H L H L Normal
L L X Z Z Normal
H L X Z Z Shutdown
Table 4. Truth table (receiver)
Inputs Output
Mode
RE
DE A-B RO
LL≥ 0.2 V H Normal
LL≤ -0.2 V L Normal
L L Inputs open H Normal
HL X Z Shutdown