SN74HC253DBR

Overview

The SN74HC253DBR is a dual 4-to-1 line data selector/multiplexer manufactured by Texas Instruments. It belongs to the 74HC logic family and operates within a supply voltage range of 2 V to 6 V. The device features two independent multiplexers, each selecting one of four data inputs based on common select lines. It utilizes a 16-pin SOIC narrow package for surface-mount installation. The component supports an operating temperature range from -40°C to +85°C and includes high noise immunity characteristics typical of CMOS technology.

Feature Summary

• Dual independent 4-to-1 multiplexing capability
• Common address selection for both channels
• High noise immunity with low power consumption
• Compatible with standard CMOS logic outputs

Applications

• Data routing in digital communication systems
• Address decoding in microprocessor interfaces
• Signal switching in test and measurement equipment
• Peripheral selection in embedded control systems

Procurement Notes

Verify the specific suffix 'DBR' corresponds to the 16-SOIC narrow package and tape-and-reel packaging format. Confirm that the device meets RoHS compliance standards as indicated by the manufacturer's current product information. Ensure the ordering part number matches the exact logic family and pin configuration required for your circuit design before finalizing procurement.

Selection Notes

Select this component when dual independent 4-to-1 signal routing is required within a single package. It is suitable for applications needing operation across a wide voltage range of 2 V to 6 V. Consider this part for designs requiring low static power consumption and high noise immunity compared to older logic families. Verify that the SOIC-16 package dimensions fit your PCB layout constraints.

Part Context

This device is part of the Texas Instruments 74HC series of high-speed CMOS logic devices. It serves as a multiplexer solution within the broader category of signal switches and selectors. The SN74HC253 provides a compact alternative to using multiple discrete multiplexer chips, reducing board space and interconnection complexity in digital logic designs.

Replacement Considerations

Check for direct equivalents such as the SN74HC253DR or SN74HC253DRE4 which share identical logical functionality. Verify pin compatibility and package dimensions before substituting. Ensure any replacement maintains the same voltage and temperature specifications.