CD54HCT393F3A

Counter Dividers Overview

The CD54HCT393F3A is a military-grade, high-speed CMOS dual 4-stage binary counter in a 14-pin ceramic dual in-line package (CDIP). It operates on a 4.5 V to 5.5 V supply and features negative-edge clocking with a common asynchronous reset. The device provides direct LSTTL input logic compatibility and buffered inputs/outputs.

Counter Dividers Feature Summary

• Military-grade construction utilizing hermetically sealed ceramic packaging for extreme environmental resilience
• Direct LSTTL input logic compatibility ensuring seamless integration with legacy digital systems
• Dual independent 4-bit ripple-carry binary counters with shared asynchronous master reset functionality

Counter Dividers Applications

• Military and defense electronic systems requiring radiation-hardened or high-reliability components
• Avionics control units operating under severe thermal and mechanical stress conditions
• Spacecraft telemetry and command data processing circuits

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'F3A' against the manufacturer's current Package Option Addendum to confirm active production status and lead finish specifications. Ensure procurement channels are authorized to handle QML certified military parts, as standard catalog distributors may not stock this specialized variant.

Counter Dividers Selection Notes

Select this component when designing for environments exceeding standard commercial temperature ranges or requiring hermetic sealing. The HCT series ensures voltage compatibility with LSTTL logic families, making it suitable for upgrading older military architectures without altering existing interface voltage levels.

Counter Dividers Part Context

This part belongs to the Texas Instruments CD54HCT393 family of high-speed CMOS logic devices. The '54' prefix denotes military qualification standards, while the 'HCT' indicates High-speed CMOS technology compatible with TTL logic levels. The 'F3A' suffix specifies the ceramic dual in-line package configuration.

Counter Dividers Replacement Considerations

CD54HC393F3A

Counter Dividers FAQ

What is the function of the MR line?

The MR (Master Reset) line resets all counter stages to their zero state when held at a high voltage level.

How does the device handle unused inputs?

Unused inputs must be connected to a defined logic high or low voltage to prevent undefined operational states caused by floating pins.