MC74HC390AFR1

Counter Dividers Overview

The MC74HC390AFR1 is a dual decade counter integrated circuit manufactured by Motorola. It operates within a supply voltage range of 2 V to 6 V and supports a maximum count rate of 50 MHz. The device utilizes negative edge triggering for clock inputs and features asynchronous reset functionality. It is designed for surface mount applications in the SOIC-16 package, with an operating temperature range spanning from -55°C to 125°C.

Counter Dividers Feature Summary

• Dual independent decade counting elements
• Negative edge triggered clock inputs
• Asynchronous reset capability

Counter Dividers Applications

• Digital timing circuits
• Signal processing systems
• Frequency division networks

Counter Dividers Procurement Notes

Verify the specific manufacturer origin, as the part number prefix indicates Motorola but market availability may include other authorized producers. Confirm the suffix 'FR1' corresponds to the required tape and reel packaging format if applicable. Ensure the component meets RoHS compliance standards for your assembly process. Cross-reference the datasheet revision date to confirm technical specifications match current production versions.

Counter Dividers Selection Notes

Select this component when dual independent decade counters are required in a single surface-mount package. The HC logic family offers low power consumption compatible with CMOS standards while maintaining speeds comparable to LSTTL. Verify that the 2V to 6V supply range aligns with the system's power architecture. Consider the wide industrial temperature range for environments subject to thermal extremes.

Counter Dividers Part Context

This component belongs to the 74HC series of high-speed CMOS logic devices. The series is characterized by silicon gate CMOS technology, providing robust performance with reduced power dissipation compared to standard CMOS. The MC74HC390 specifically implements two separate four-stage binary ripple counters within one integrated circuit, facilitating compact digital design solutions.

Counter Dividers Replacement Considerations

The CD74HC390M from Texas Instruments is a documented substitute offering similar functional characteristics. Verify pin compatibility and electrical parameters before substitution.