841N254B Datasheet, PDF (15/24 Pages) Integrated Device Technology – FemtoClock NG Crystal-to-LVDS/ HCSL Clock Synthesizer

841N254B Datasheet
LVDS Driver Termination
A general LVDS interface is shown in Figure 4. Standard termination
for LVDS type output structure requires both a 100 parallel resistor
at the receiver and a 100 differential transmission line environment.
In order to avoid any transmission line reflection issues, the 100
resistor must be placed as close to the receiver as possible. IDT
offers a full line of LVDS compliant devices with two types of output
structures: current source and voltage source. The standard
termination schematic as shown in Figure 4 can be used with either
type of output structure. If using a non-standard termination, it is
recommended to contact IDT and confirm if the output is a current
source or a voltage source type structure. In addition, since these
outputs are LVDS compatible, the amplitude and common mode
input range of the input receivers should be verified for compatibility
with the output.
LVDS Driver
100Ω
+
LVDS
Receiver
–
100Ω Differential Transmission Line
Figure 4. Typical LVDS Driver Termination
©2016 Integrated Device Technology, Inc.
15
Revision B, May 23, 2016