5.0Gbps PCI Express Passive Switches
Test Circuits/Timing Diagrams
MAX4888A/MAX4889A
3.3V |
tr < 5ns |
LOGIC
VIH
tf < 5ns |
VN_
| V+ |
NO_ | COM_ |
OR NC_ |
|
SEL |
|
RL
INPUT
VOUT
CL
VIL
0.9x V0UT
tOFF 
0.9x VOUT
LOGIC INPUT
GND |
SWITCH 0V OUTPUT
50%
VOUT
tON
CL INCLUDES FIXTURE AND STRAY CAPACITANCE.
MAX4888A/MAX4889A
VOUT = VN_ ( | RL | ) |
| ||
RL + RON |
| |
VN_ = VNO_ OR VNC_
Figure 1. Switching Time
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