ICS831721AGI REVISION A FEBRUARY 3, 2014

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©2014 Integrated Device Technology, Inc.

ICS831721I Data Sheet

DIFFERENTIAL CLOCK/DATA MULTIPLEXER

Recommended Termination

Figure 2A is the recommended source termination for applications

where the driver and receiver will be on a separate PCBs. This

termination is the standard for PCI Express™

and HCSL output

types. All traces should be 50

 impedance single-ended or

100

 differential.

Figure 2A. Recommended Source Termination (where the driver and receiver will be on separate PCBs)

Figure 2B is the recommended termination for applications where a

point-to-point connection can be used. A point-to-point connection

contains both the driver and the receiver on the same PCB. With a

matched termination at the receiver, transmission-line reflections will

be minimized. In addition, a series resistor (Rs) at the driver offers

flexibility and can help dampen unwanted reflections. The optional

resistor can range from 0

 to 33. All traces should be 50

impedance single-ended or 100

 differential.

Figure 2B. Recommended Termination (where a point-to-point connection can be used)