SN74CBTLV3253D

Overview

The SN74CBTLV3253D is a low-voltage dual 1-of-4 FET multiplexer/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 2.3 V to 3.6 V, making it suitable for portable and battery-powered applications. The device features two independent channels, each capable of selecting one of four inputs or outputs. Key electrical characteristics include a maximum on-resistance of 40 ohms and propagation delays of 6.7 ns (tPHL) and 6.1 ns (tPLH). It supports an operating temperature range from -40°C to +85°C and is available in a D package.

Feature Summary

• Dual-channel architecture providing two independent 1-of-4 multiplexing paths
• Low-voltage operation optimized for 2.3 V to 3.6 V power supplies
• FET-based switching mechanism ensuring low on-resistance
• High-speed signal routing with nanosecond-level propagation delays

Applications

• Portable consumer electronics requiring low-power signal switching
• Battery-operated devices utilizing low-voltage logic levels
• Data acquisition systems needing multiplexed input selection
• Communication equipment requiring high-speed signal routing

Procurement Notes

Verify the specific suffix 'D' corresponds to the desired package type and tape/reel configuration during procurement. Confirm that the 2.3 V to 3.6 V operating voltage aligns with the target system's power rails. Ensure compatibility with the required signal integrity specifications, particularly regarding the 40 ohm on-resistance limit. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a dual-channel multiplexer is required for low-voltage digital signals between 2.3 V and 3.6 V. It is appropriate for designs prioritizing low power consumption and moderate switching speeds. Consider the 40 ohm on-resistance for signal loss calculations in sensitive analog paths. Compare against higher-voltage variants if the system operates above 3.6 V.

Part Context

This part belongs to the SN74CBT series of low-voltage CMOS logic switches. It complements other multiplexers like the SN74CBT3253C for 5 V applications. The device integrates standard logic functions into a compact form factor, supporting modern miniaturized circuit designs.

Replacement Considerations

SN74CBTLV3253DBR: Identical function in a different reel packaging format. SN74CBTLV3253RGYR: Same logical function but in a VQFN-16 package; verify pinout compatibility.