SN74CBT3253CDRG4

Overview

The SN74CBT3253CDRG4 is a dual 1-of-4 FET multiplexer/demultiplexer bus switch 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 1:4 multiplexer. 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 quiescent current of 3 uA. The component is housed in a VQFN-16 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.
• Integrated -2-V undershoot protection capability to safeguard inputs against transient voltage drops.
• Low power consumption design characterized by minimal quiescent current draw during operation.
• High-speed signal switching performance suitable for data-intensive applications.

Applications

• Portable equipment requiring efficient signal path management
• Consumer electronics utilizing high-density logic interfaces
• Computing systems needing low-latency data routing

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free packaging compliant with RoHS standards. Confirm the VQFN-16 package dimensions match your PCB footprint requirements. Ensure the -40°C to +85°C industrial temperature rating aligns with your environmental operating conditions. Cross-reference the datasheet revision date to confirm technical accuracy before finalizing procurement.

Selection Notes

Select this component when a dual 1-of-4 configuration is required within a compact surface-mount form factor. The VQFN-16 package offers a small footprint compared to traditional SSOP options. Consider the 12-ohm on-resistance limit for signal integrity analysis in your specific circuit design. Verify that the 4 V to 5.5 V supply range matches your system's power rails.

Part Context

This part belongs to the SN74CBT3253C series of high-speed CMOS logic switches. It serves as a variant of the standard SN74CBT3253CDR, distinguished by its green (RoHS-compliant) packaging designation. The device is part of Texas Instruments' broader portfolio of signal switching integrated circuits designed for portable and consumer applications.

Replacement Considerations

SN74CBT3253CDR is a functional equivalent without the specific lead-free suffix. SN74CBT3253DBR provides identical electrical characteristics but utilizes an SSOP-16 package instead of VQFN-16. Verify pinout compatibility when substituting packages.