AC Loadings and Waveforms
A
B
Network Analyzer
50Ω
S
Control
OE
GND
Figure 13. Bandwidth Test
800mV
Input
400mV
tPLH
tPHL
VOH
VOL
Output
Figure 14. Propagation Delay
800mV
50%
50%
Input
400mV
0
tPHL
tPLH
VOH
50%
VOL
50%
Output
tSK(P) = | tPHL - tPHL
|
Figure 15. Pulse Skew tSP(P)
800mV
50%
50%
Input
400mV
tPHL1
tPLH1
0
50%
50%
Output 1
tSK(O)
tSK(O)
50%
50%
Output 2
tPHL2
tPLH2
tSK(O) = | tPLH1 - tPLH2 | or | tPHL1 - tPHL2
|
Figure 16. Output Skew tSK(O)
© 2005 Fairchild Semiconductor Corporation
FSUSB20 • Rev. 1.0.3
www.fairchildsemi.com
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