SN74HC148AN

Overview

The SN74HC148AN is an 8-line to 3-line priority encoder manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and supports a typical propagation delay of 16ns. The device features active-low data inputs and outputs, with an enable input (EI) and output enable (EO) facilitating cascading without external circuitry. It is housed in a 16-pin PDIP package and functions across an operating temperature range of -40°C to +85°C.

Feature Summary

• Encodes eight active-low data lines into three-line binary octal codes
• Includes enable input and output signals for direct cascading expansion
• Outputs capable of driving up to ten LSTTL loads

Applications

• N-bit encoding systems
• Code converters
• Code generators

Procurement Notes

Verify the specific ordering suffix 'AN' against the manufacturer's current orderable addendum to confirm availability status and packaging details. Ensure the selected component matches the required PDIP-16 package dimensions and lead finish specifications for your assembly process.

Selection Notes

Select this component when an 8-input priority encoder with active-low logic levels is required. Verify that the 2V to 6V supply voltage range aligns with the system power rails. Confirm that the 16-pin PDIP package fits the designated footprint and that the -40°C to +85°C industrial temperature rating meets environmental requirements.

Part Context

This part belongs to the SNx4HC148 family of 8-line to 3-line priority encoders. It utilizes CMOS technology to provide low power consumption while maintaining compatibility with standard logic families. The HC series offers wide voltage operation and high noise immunity compared to older logic standards.

Replacement Considerations

SN74HC148N is a catalog version available in the same PDIP-16 package.