DATA
DATA
INHIBIT
OUTPUT
High
X
H
L
X
H
L
H
L
L
Z
Low Z (No signal)
Low Z (Signal)
H
L
L
L
L
H
FIGURE 1 – TX OUTPUT TRUTH TABLE
Notes: 1. Data and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and in the
same state during the off time (both high and low).
2. Region 1; no output signal, High Z state, (Receive Mode), Region 2; No Output signal, Low Z state, Region 3; Transmitter signal
on, low Z (Transmitter mode), Region 4; No Output signal, Low Z state, (Terminate Mode).
FIGURE 2 – TRANSMITTER LOGIC WAVEFORMS
SCD4480-DFI Rev B 2/27/2013
5
Aeroflex Plainview
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
