9©2017 Integrated Device Technology, Inc. November 9, 2017
8S89831I Datasheet
3.3V Differential Input with Built-In 50 Termination Interface
The IN /nIN with built-in 50 terminations accept LVDS, LVPECL,
LVHSTL, CML, SSTL and other differential signals. Both signals must
meet the V
IN
and V
IH
input requirements. Figures 2A to 2D show
interface examples for the IN/nIN input with built-in 50 terminations
driven by the most common driver types. The input interfaces
suggested here are examples only. If the driver is from another
vendor, use their termination recommendation. Please consult with
the vendor of the driver component to confirm the driver termination
requirements.
Figure 2A. IN/nIN Input with Built-In 50
Driven by an LVDS Driver
Figure 2C. IN/nIN Input with Built-In 50
Driven by a CML Driver with Open Collector
Figure 2B. IN/nIN Input with Built-In 50
Driven by an LVPECL Driver
Figure 2D. IN/nIN Input with Built-In 50
Driven by an SSTL Driver
SSTL
R1 25
R2 25
IN
nIN
VT
Receiver
With
Built-In
50Ω
3.3V
3.3V
Zo = 50Ω
Zo = 50Ω
