1 Features
1• Functionally Equivalent to QS3253
• 5-Ω Switch Connection Between Two Ports
• Rail-to-Rail Switching on Data I/O Ports
• Ioff Supports Partial-Power-Down Mode Operation
• Latch-Up Performance Exceeds 100 mA Per
JESD 78, Class II

2 Applications
• Video Broadcasting: IP-Based Multi-Format
Transcoders
• Video Communications Systems

3 Description
The SN74CBTLV3253 device is a dual 1-of-4 highspeed
FET multiplexer and demultiplexer. The low
ON-state resistance of the switch allows connections
to be made with minimal propagation delay.
The select (S0, S1) inputs control the data flow. The
FET multiplexers/demultiplexers are disabled when
the associated output-enable (OE) input is high.
The SN74CBTLV3253 device is fully specified for
partial-power-down applications using Ioff. The Ioff
feature ensures that damaging current will not
backflow through the device when it is powered
down. The device has isolation during power off.