ORT8850H AGERE [Agere Systems], ORT8850H Datasheet - Page 61

• Manufacturer Part Number: ORT8850H
• Description: Field-Programmable System Chip (FPSC) Eight-Channel x 850 Mbits/s Backplane Transceiver
• Manufacturer: AGERE [Agere Systems]

Data Sheet
August 2001
Agere Systems Inc.
Input/Output Buffer Measurement Conditions (on-LVDS Buffer)
Note: Switch to V
A. Load Used to Measure Propagation Delay
TO THE OUTPUT UNDER TEST
DD
for T
PLZ
/T
PZL
; switch to GND for T
out[i]
out[i]
OUT
PAD
PAD IN
V
1.5 V
0.0 V
DD
in[i]
V
V
Figure 20. Output Buffer Delays
Figure 21. Input Buffer Delays
DD
SS
/2
ts[i]
V
PHZ
Figure 19. ac Test Loads
3.0 V
1.5 V
0.0 V
DD
50 pF
V
V
DD
SS
/T
/2
Eight-Channel x 850 Mbits/s Backplane Transceiver
PZH
T
PAD
.
PHH
IN
OUT
PAD
T
PHH
ac TEST LOADS (SHOWN ABOVE)
TO THE OUTPUT UNDER TEST
T
B. Load Used to Measure Rising/Falling Edges
PLL
T
PLL
in[i]
ORCA ORT8850 FPSC
V
CC
GND
1 k
50 pF
5-3233.a(F)
5-3234(F)
5-3235(F)
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