SN74CBT3257CDBQR

Overview

The SN74CBT3257CDBQR is a high-speed TTL-compatible FET multiplexer/demultiplexer from Texas Instruments. It features four independent 1-of-2 switches in a 16-pin SSOP package. The device operates with a supply voltage range of 4 V to 5.5 V and supports data rates up to 800 MHz. It includes low ON-state resistance and low OFF-state leakage current, ensuring signal integrity. The component functions as both a multiplexer and demultiplexer, controlled by logic inputs.

Feature Summary

• High-speed operation supporting data rates up to 800 MHz
• TTL-compatible input logic levels for broad compatibility
• Low ON-state resistance minimizes signal attenuation
• Low OFF-state leakage current preserves signal isolation

Applications

• Portable equipment requiring low power consumption
• Consumer electronics utilizing high-speed data switching
• Industrial control systems needing reliable signal routing
• Telecommunications infrastructure components

Procurement Notes

Verify the specific suffix 'DBQR' confirms the 16-pin SSOP package and tape-and-reel packaging format. Ensure the operating temperature range aligns with your system requirements. Confirm RoHS compliance status through official documentation before integration. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when a 4-bit 1-of-2 FET switch is required within a 5V logic family. It is suitable for applications demanding high bandwidth and low distortion. Consider the SSOP package constraints for PCB layout. Compare against LV variants if lower voltage operation below 4V is necessary for the target design.

Part Context

This part belongs to the SN74CBT3257C series of high-speed FET multiplexers. It is designed for applications requiring fast switching speeds and low power dissipation. The CBT series offers improved performance over standard 74HC logic families in terms of speed and drive capability while maintaining CMOS low power characteristics.

Replacement Considerations

Check for SN74CBT3257CPW for TSSOP-16 packaging or SN74CBT3257CDWR for SOIC-16 alternatives. Verify pinout compatibility and electrical specifications match exactly before substitution.