CD74HCT147M96

Overview

The CD74HCT147M96 is a 10-line-to-4-line priority encoder manufactured by Harris Corporation, now part of Texas Instruments. It belongs to the HC/UH logic series and utilizes CMOS technology. The device features ten active-low data inputs and four active-low binary-coded decimal outputs. It operates within a supply voltage range of 2V to 6V and supports an operating temperature range from -55°C to +125°C. The component is housed in a 16-pin Plastic Dual In-Line Package (PDIP) or Surface Mount SOIC variant.

Feature Summary

• Encodes ten active-low input lines into a corresponding four-bit active-low binary code.
• Implements priority logic where higher-numbered inputs take precedence over lower-numbered ones.
• Includes a zero output indicator that activates when all data inputs are inactive.

Applications

• Keyboard encoding circuits
• Interrupt request prioritization systems
• Decimal-to-binary conversion modules

Procurement Notes

Verify manufacturer origin as Harris Corporation or Texas Instruments due to legacy status. Confirm RoHS compliance status as older Harris batches may not meet current environmental standards. Validate package type against schematic requirements. Check for lead-free markings if required by assembly processes. Ensure compatibility with existing inventory specifications.

Selection Notes

Select this component for applications requiring direct decimal-to-binary translation with built-in priority handling. Suitable for environments demanding wide temperature stability. Consider pinout compatibility with existing PCB footprints. Evaluate power consumption requirements against standard CMOS capabilities. Verify interface voltage levels match system logic standards.

Part Context

This component is part of the extensive 74HC logic family, widely used in digital electronics for basic logic operations. The HCT suffix indicates compatibility with TTL input levels while maintaining CMOS output characteristics. Harris Corporation originally developed this line before its acquisition by Texas Instruments, which continues to support legacy part numbers.

Replacement Considerations

CD74HC147M96: Compatible alternative with similar functionality but potentially different input/output polarity or speed characteristics. SN74HC147N: Standard DIP version from Texas Instruments offering equivalent logical operations. Verify pin compatibility and electrical parameters before substitution.