SN74CBT3251DR

Overview

The SN74CBT3251DR is a low-voltage CMOS 1-of-8 FET multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4 V to 5.5 V, typically at 5 V. The device features eight independent input/output channels and three address inputs for channel selection. Key electrical specifications include a maximum on-resistance of 14 Ohms, a maximum propagation delay of 6.4 ns, and a maximum transition time of 6.8 ns. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Provides high-speed signal routing through a single 8-to-1 multiplexing configuration with low on-resistance.
• Supports bidirectional data flow between the common port and any of the eight selectable ports.
• Integrates logic-level translation capabilities suitable for mixed-signal system environments.

Applications

• High-speed data acquisition systems requiring precise signal path selection.
• Portable battery-powered equipment utilizing standard 5 V logic interfaces.
• Industrial control applications involving signal switching in harsh thermal conditions.

Procurement Notes

Verify the specific ordering suffix 'D' corresponds to the SOIC-16 package and tape-and-reel quantity when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against current project specifications. Ensure the supplier provides valid traceability documentation for the Texas Instruments manufacturing origin.

Selection Notes

Select this component when a single 8-channel multiplexer is required for 5 V logic systems. Compare against the SN74CBT3251RGYR variant if a smaller QFN footprint is necessary instead of the standard SOIC package. Evaluate the SN74CBTLV3251 series if operation below 4 V is required for lower voltage applications.

Part Context

This part belongs to the SN74CBT3251 family of low-voltage analog switches. It serves as a digital interface solution for routing multiple signals through a single line. The device is designed to minimize power consumption while maintaining fast switching speeds for modern electronic designs.

Replacement Considerations

The SN74CBT3251RGYR is a confirmed substitute offering identical functionality in a 16-VQFN package. Verify pin compatibility and thermal performance differences when transitioning between the SOIC and QFN form factors.