Rainbow Electronics MAX3079E - Manual (Page 14)

MAX3070E–MAX3079E
+3.3V, ±15kV ESD-Protected, Fail-Safe,
Hot-Swap, RS-485/RS-422 Transceivers
14 ______________________________________________________________________________________
MAX3072E/MAX3075E/MAX3078E
TRANSMITTING
INPUTS OUTPUTS
RE DE DI B/Z A/Y
X 1 1 0 1
X 1 0 1 0
0 0 X High-Z High-Z
1 0 X Shutdown
Function Tables (continued)
MAX3079E
TRANSMITTING
INPUTS OUTPUTS
TXP RE DE DI Z Y
0 X 1 1 0 1
0 X 1 0 1 0
1 X 1 1 1 0
1 X 1 0 0 1
X 0 0 X High-Z High-Z
X 1 0 X Shutdown
RECEIVING
INPUTS OUTPUTS
H/F RXP RE DE A, B Y, Z RO
0 0 0 X > -50mV X 1
0 0 0 X < -200mV X 0
0 1 0 X > -50mV X 0
0 1 0 X < -200mV X 1
1 0 0 0 X > -50mV 1
1 0 0 0 X < -200mV 0
1 1 0 0 X > -50mV 0
1 1 0 0 X < -200mV 1
0 0 0 X Open/shorted X 1
1 0 0 0 X Open/shorted 1
0 1 0 X Open/shorted X 0
1 1 0 0 X Open/shorted 0
X X 1 1 X X High-Z
X X 1 0 X X Shutdown
RECEIVING
INPUTS OUTPUTS
RE DE A-B RO
0 X ≥ -50mV 1
0 X ≤ -200mV 0
0 X
Open/
shorted
1
1 1 X High-Z
1 0 X Shutdown
X = Don’t care; shutdown mode, driver and receiver outputs are high impedance.