PI90LV019
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Test Circuits and Timing Waveforms
DO+
2V
0.8V
DIN
S1
Driver Enabled
RL/2
RL/2
DO–
VOS
Figure 1. Differential Driver DC Test Circuit
VOD
CL
Pulse
DIN
Generator
50-ohm
CL
Driver Enabled
DO+
RL
DO–
Figure 2. Differential Driver Propagation Delay and Transition Time Test Circuit
3V
DIN
1.5V
0V
tPHLD
DOUT+,DOUT-
0V
1.5V
0V (Differential)
tPLHD
0V
(DO+) - (DO–)
0V
20%
80%
80%
0V
20%
DO+
DO–
tTLH
tDIFF = (DO+) - (DO–)
tTHL
Figure 3. Driver Propagation Delay and Transition Time Waveforms
06-0018
5
PS8614C
03/06/06