Datasheet

SCBA015A
7–38
Fast GTLP Backplanes With the GTLPH1655
Measurement Results With an Unloaded Backplane (Z
O
= 30 Ω, R
TT
= 25 Ω)
Input/Output Signal at f = 10 MHz
Signal at Input
of Transmitter
Signal at Output
of Receiver,
Without R
L
Signal at Output
of Receiver,
R
L
= 50 Ω
3.50 V
2.50 V
1.50 V
0.50 V
–0.50 V
0 ns 20 ns 40 ns 60 ns 80 ns 100 ns
Figure 29. LVTTL Input and Output Signal of SN74GTLPH1655, ERC = V
CC
, Unloaded, 10 MHz
ERC = V
CC
Beginning of Line
Middle of Line
End of Line
0 ns 20 ns 40 ns 60 ns 80 ns 100 ns
2.00 V
1.50 V
0.50 V
0.00 V
1.00 V
Figure 30. GTLP Bus Signal, Slow Rise and Fall Times, ERC = V
CC
, Unloaded, 10 MHz