CD54HC147F3A

Signal Switches, Multiplexers, Decoders Overview

The CD54HC147F3A is a high-speed CMOS logic device functioning as a 9-input to 4-line priority encoder. It accepts data from nine active LOW inputs and provides binary representation on four active LOW outputs, utilizing an implied decimal zero for encoding when all inputs are HIGH. The component operates within a supply voltage range of 2V to 6V and supports a wide operating temperature range from -55°C to 125°C. It features buffered inputs and outputs with typical propagation delays of 13ns at VCC = 5V.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides 10-line to 4-line priority encoding function using implied decimal zero
• Features buffered inputs and outputs for signal integrity
• Offers significant power reduction compared to LSTTL logic ICs
• Ensures balanced propagation delay and transition times

Signal Switches, Multiplexers, Decoders Applications

• High-speed digital systems requiring priority encoding
• Military and defense applications due to extended temperature rating
• Interfaces between active LOW input sources and binary output logic

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix F3A against the latest Texas Instruments Package Option Addendum to confirm current production status and material specifications. Ensure compatibility with military-grade requirements if applicable, as standard catalog versions may differ in qualification. Confirm package dimensions and thermal characteristics match the design constraints before finalizing procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a high-speed priority encoder with buffered I/O is required. The HC series offers wide voltage operation suitable for various logic families. Consider the HCT variant if direct LSTTL input compatibility is necessary. Verify that the 16-pin CDIP package fits the mechanical layout and that the extended temperature range meets environmental demands.

Signal Switches, Multiplexers, Decoders Part Context

The CD54HC147 belongs to the Texas Instruments CDx4HC147 family of high-speed silicon-gate CMOS devices. These components are pin-compatible with low power Schottky TTL (LSTTL). The CD54 prefix indicates a military-qualified version designed for demanding environments, distinguishing it from the commercial CD74HC147 counterpart.

Signal Switches, Multiplexers, Decoders Replacement Considerations

CD54HC147F3A.A serves as a qualified alternative within the same product line.