ICS84427 View Datasheet(PDF) - Integrated Circuit Systems

Part Name

Description

MFG CO.

ICS84427

CRYSTAL-TO-LVDS INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER

Integrated Circuit Systems 

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Integrated

Circuit

Systems, Inc.

PRELIMINARY

ICS84427

CRYSTAL-TO-LVDS

INTEGRATED FREQUENCY SYNTHESIZER/FANOUT BUFFER

LVDS DRIVER TERMINATION

A general LVDS interface is shown in Figure 3. In a 100Ω differ-

ential transmission line environment, LVDS drivers require a

matched load termination of 100Ω across near the receiver in-

put. For a multiple LVDS outputs buffer, if only partial outputs

are used, it is recommended to terminate the un-used outputs.

3.3V

LVDS_Driv er

3.3V

+

R1

100

-

100 Ohm Differiential Transmission Line

FIGURE 3. TYPICAL LVDS DRIVER TERMINATION

RECOMMENDATIONS FOR UNUSED OUTPUT PINS

OUTPUTS:

LVDS

All unused LVDS output pairs can be either left floating or

terminated with 100Ω across. If they are left floating, we

recommend that there is no trace attached.

84427CM

www.icst.com/products/hiperclocks.html

8

REV. D NOVEMBER 30, 2005

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