SN74CBT3253DBR

Overview

The SN74CBT3253DBR is a dual 1-of-4 multiplexer/demultiplexer switch IC manufactured by Texas Instruments. It operates within a supply voltage range of 4 V to 5.5 V, with a typical operating voltage of 5 V. The device features two independent channels, each configured as a 2 x 1:4 circuit. Key electrical specifications include a maximum on-resistance of 12 ohms, a maximum propagation delay of 6.7 ns, and a maximum turn-off time of 6.1 ns. It supports a bandwidth of 200 MHz and has a maximum power supply current of 3 uA. The component is housed in a 16-SSOP package and functions reliably across an operating temperature range from -40°C to +85°C.

Feature Summary

• Dual-channel architecture providing two independent 1-of-4 multiplexing paths for signal routing.
• Low on-resistance characteristic ensures minimal signal attenuation during active switching states.
• High-speed performance capabilities support data rates suitable for high-bandwidth applications.
• Ultra-low quiescent current consumption minimizes power usage when the device is idle.

Applications

• Portable equipment requiring efficient signal path management
• Cellular phones for internal communication bus switching
• Computer and graphics cards for peripheral interface control

Procurement Notes

Verify the specific ordering suffix to confirm the SSOP-16 package type and tape-and-reel packaging configuration. Ensure compatibility with standard surface-mount assembly processes. Confirm RoHS compliance status and moisture sensitivity level requirements for your manufacturing environment. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel 1-of-4 multiplexing solution is required within a 4 V to 5.5 V supply range. It is appropriate for designs prioritizing low on-resistance and high bandwidth up to 200 MHz. Consider the 16-SSOP package constraints regarding board space and thermal dissipation. Compare against single-channel alternatives if only one multiplexer path is needed, or higher-density options if more channels are required.

Part Context

This device belongs to the SN74CBT3253C series of analog switches. It is part of Texas Instruments' broader portfolio of logic-level compatible multiplexer ICs designed for consumer electronics. The SN74CBT3253DBR variant specifically denotes the SSOP-16 package form factor. It complements other devices in the family such as the SN74CBT3251 (1-of-8) and SN74CBT3257 (SPDT) for comprehensive signal routing needs.

Replacement Considerations

Direct functional substitutes within the same series include SN74CBT3253DR (SOIC-16 package) and SN74CBT3253RGYR (VQFN-16 package). Verify pinout compatibility and package dimensions before substitution. Alternative packages may require PCB layout adjustments but maintain identical electrical characteristics and functionality.