844256AM

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 29, 2005

10

Integrated

Circuit

Systems, Inc.

ICS844256

PRELIMINARY

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

Ω

differential transmission line environment, LVDS drivers

require a matched load termination of 100

Ω across near

the receiver input.

All control pins have internal pull-ups or pull-downs; additional

resistance is not required but can be added for additional

protection. A 1k

Ω resistor can be used.

LVDS

All unused LVDS output pairs can be either left floating or

terminated with 100

Ω across. If they are left floating, we

recommend that there is no trace attached.

2.5V or 3.3V

+

-

VDD

100 Ohm Differential Transmission Line

R1

100

LVDS_Driv er