1FEATURES

• Signaling Rates >1.5 Gbps per Channel

• Supports Telecom/Datacom and HDTV

Video Switching

• Non-Blocking Architecture Allows Each

Output to be Connected to Any Input

• Compatible With ANSI TIA/EIA-644-A LVDS

Standard

• 25 mV of Input Voltage Threshold Hysteresis

• Propagation Delay Times, 900 ps Typical

• Inputs Electrically Compatible With LVPECL,

CML and LVDS Signal Levels

• Operates From a Single 3.3-V Supply

• Integrated 110-Ω Line Termination Resistors

Available With SN65LVDT125A

APPLICATIONS

• Clock Buffering/Clock Muxing

• Wireless Base Stations

• High-Speed Network Routing

• HDTV Video Switching

DESCRIPTION

The SN65LVDS125A and SN65LVDT125A are 4x4

nonblocking crosspoint switches. Low-voltage

differential signaling (LVDS) is used to achieve

signaling rates of 1.5 Gbps per channel. Each output

driver includes a 4:1 multiplexer to allow any input to

be routed to any output. Internal signal paths are fully

differential to achieve the high signaling speeds while

maintaining low signal skews. The SN65LVDT125A

incorporates 110-Ω termination resistors for those

applications where board space is a premium.

Designed to support signaling rates up to 1.5 Gbps

for OC-12 clocks (622 MHz). The 1.5-Gbps signaling

rate allows use in HDTV systems, including SMPTE

292 video applications requiring signaling rates of

1.485 Gbps.

The SN65LVDS125A and SN65LVDT125A are

characterized for operation from -40°C to 85°C.