SN74CB3Q3253DBQR

Overview

The SN74CB3Q3253DBQR is a dual 1-of-4 FET multiplexer/demultiplexer from Texas Instruments. It operates on a single supply voltage ranging from 2.3V to 3.6V. The device features high-bandwidth data paths up to 500MHz and supports bidirectional data flow with near-zero propagation delay. It utilizes a charge pump to maintain low and flat ON-state resistance (ron) characteristics across the operating range. The DBQR variant is housed in a 16-pin SSOP package.

Feature Summary

• High-bandwidth data path supporting frequencies up to 500MHz
• 5V tolerant I/Os compatible with powered-up or powered-down states
• Low and flat ON-state resistance for minimal signal distortion
• Rail-to-rail switching capability on data input/output ports

Applications

• Video broadcasting IP-based multi-format transcoders
• Video communications systems
• USB interface bus isolation
• Differential signal interface applications

Procurement Notes

Verify the specific ordering suffix 'DBQR' corresponds to the 16-pin SSOP package configuration required for your PCB layout. Confirm that the component meets RoHS3 compliance standards as specified in the manufacturer documentation. Ensure proper handling precautions are observed due to electrostatic discharge sensitivity ratings.

Selection Notes

Select this component when designing circuits requiring dual independent 1-of-4 multiplexing functions within a compact surface-mount footprint. It is suitable for applications demanding rail-to-rail switching capabilities between 2.5V and 3.3V logic levels. Consider its low power consumption and high bandwidth requirements for broadband communication interfaces.

Part Context

This part belongs to the SN74CB3Q series of low-voltage, high-bandwidth bus switches manufactured by Texas Instruments. The CB3Q family is designed for digital and analog applications requiring fast switching speeds and low insertion loss. The device integrates internal charge pump circuitry to optimize performance across varying supply voltages.

Replacement Considerations

No direct public substitute part numbers are confirmed in the provided documentation.