SN74CBT3253CD

Overview

The SN74CBT3253CD is a dual 1-of-4 multiplexer/demultiplexer switch IC from Texas Instruments, part of the SN74CBT3253C series. It features two independent channels configured as 2 x 1:4 switches in a 16-pin SSOP package. The device operates on a single power supply ranging from 4 V to 5.5 V, with a typical operating voltage of 5 V. Key electrical specifications include a maximum on-resistance of 12 ohms, a maximum propagation delay of 6.7 ns, and a maximum off-state leakage current of 3 uA. It supports a bandwidth of 200 MHz and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Dual-channel architecture providing two independent 1-to-4 multiplexing paths for signal routing
• Low on-resistance characteristic ensuring minimal signal attenuation across the switching path
• High-speed performance with nanosecond-level propagation delays suitable for data-intensive applications
• Low standby power consumption enabled by ultra-low quiescent current design

Applications

• Portable equipment requiring efficient signal routing under low voltage constraints
• Consumer electronics utilizing high-speed data bus switching
• Industrial control systems needing reliable multiplexing in harsh thermal environments
• Telecommunications infrastructure supporting high-bandwidth signal distribution

Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your region. Confirm moisture sensitivity level handling procedures during assembly. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components. Validate that the ordering code matches the exact electrical and mechanical parameters required for your design.

Selection Notes

Select this component when designing circuits requiring dual independent 1-to-4 switching capabilities within a compact surface-mount footprint. It is appropriate for applications demanding low on-resistance and high bandwidth under a single 5 V supply. Consider this part for portable devices where low power consumption and fast switching speeds are critical. Ensure the system operates within the specified 4 V to 5.5 V voltage range and -40°C to +85°C temperature limits.

Part Context

This device belongs to the SN74CBT3253C family of high-speed CMOS logic switches. It is designed to replace older discrete switching solutions, offering integrated multiplexing in a small SSOP package. The series is characterized by low on-resistance and high bandwidth, making it suitable for modern digital signal processing applications. It complements other Texas Instruments logic products by providing efficient signal routing without significant signal degradation.

Replacement Considerations

Publicly confirmed substitute part numbers include SN74CBT3253CDR and SN74CBT3253DBR. Verify pin compatibility and package dimensions before substitution. Ensure electrical parameters such as on-resistance and propagation delay meet or exceed original requirements.