ICS851S201CKI MAY 27, 2017

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©2017 Integrated Device Technology, Inc.

ICS851S201I Data Sheet

2:1 DIFFERENTIAL-TO-HCSL MULTIPLEXER

Recommended Termination

Figure 4A

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 50Ω impedance single-ended or 100Ω

differential.

Figure 4A. Recommended Source Termination (where the driver and receiver will be on separate PCBs)

Figure 4B

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 0Ω to 33Ω. All traces should be 50Ω

impedance single-ended or 100Ω differential.

Figure 4B. Recommended Termination (where a point-to-point connection can be used)