SN74CB3Q3257DBQR

Overview

The SN74CB3Q3257DBQR is a low-voltage high-bandwidth bus switch manufactured by Texas Instruments. It functions as a 4-bit 1-of-2 FET multiplexer/demultiplexer housed in an SSOP-16 package with a 4.4mm width. The device operates on a single power supply ranging from 2.3V to 3.6V, supporting both 2.5V and 3.3V logic systems. It features four independent channels configured for signal routing applications.

Feature Summary

• Provides four independent 1-of-2 signal paths for multiplexing or demultiplexing
• Utilizes FET technology for low on-resistance and high bandwidth performance
• Operates within a low voltage range of 2.3V to 3.6V for compatibility with modern logic families

Applications

• Portable equipment requiring low power consumption
• Consumer electronics utilizing 2.5V or 3.3V logic
• Computing products needing high-speed data routing

Procurement Notes

Verify the specific ordering suffix 'DBQR' to confirm the SSOP-16 package and tape-and-reel packaging configuration. Ensure the component matches the Texas Instruments manufacturing origin and RoHS compliance status required for your assembly process. Cross-reference the full part number against official distributor catalogs to validate current production status and availability.

Selection Notes

Select this component when designing circuits that require switching between two input sources for four separate data lines. It is suitable for applications demanding low insertion loss and minimal signal distortion. Consider the SSOP-16 footprint constraints and the 2.3V to 3.6V operating voltage window during schematic capture and PCB layout planning.

Part Context

This device belongs to the SN74CB3Q series of low-voltage CMOS logic switches. It is designed to replace older generation bus switches that operate at higher voltages. The CB3Q series offers improved speed and lower power consumption compared to standard TTL or older CMOS equivalents, making it ideal for space-constrained portable designs.

Replacement Considerations

Direct substitutes include other variants within the SN74CB3Q3257 family, such as SN74CB3Q3257DGVR or SN74CB3Q3257PW, which offer identical electrical characteristics but differ in package type or reel quantity.