MC74HC390ADR2G

Counter Dividers Overview

The MC74HC390ADR2G is a high-performance silicon-gate CMOS dual 4-stage binary ripple counter. It contains two independent counters, each with separate divide-by-two and divide-by-five sections. The device operates within a supply voltage range of 2.0 to 6.0 V and supports a maximum clock frequency of 50 MHz at 6.0 V. It features asynchronous reset inputs for each counter and outputs compatible with standard CMOS, NMOS, and TTL loads.

Counter Dividers Feature Summary

• Contains two independent 4-bit counters with separate divide-by-two and divide-by-five sections
• Outputs directly interface to CMOS, NMOS, and TTL logic families
• Provides asynchronous reset functionality for each individual counter section
• Compatible with standard CMOS outputs and LSTTL outputs when pullup resistors are used

Counter Dividers Applications

• Implementing decade dividers with BCD output sequences
• Creating bi-quinary count sequences for specialized counting applications
• Cascading sections to implement various combinations of division up to a divide-by-100 counter

Counter Dividers Procurement Notes

Verify the specific package suffix 'D' corresponds to the SOIC-16 configuration required for your design. Confirm that the 'R2G' suffix indicates tape and reel packaging with 2500 units per reel. Ensure the component meets RoHS compliance standards if required by your manufacturing process.

Counter Dividers Selection Notes

Select this component when a dual independent counter structure is needed within a single package. It is suitable for designs requiring both divide-by-two and divide-by-five operations simultaneously. Consider the operating temperature range of -55°C to +125°C for industrial or automotive environments.

Counter Dividers Part Context

This part belongs to the MC74HC390A series of high-speed CMOS logic devices. It is functionally identical in pinout to the LS390 but utilizes modern silicon-gate CMOS technology for lower power consumption and higher noise immunity. The device is manufactured by onsemi.

Counter Dividers Replacement Considerations

Direct substitutes include MC74HC390ADTR2G (TSSOP-16 package) and MC74HC390ADR2G-Q (automotive qualified). Cross-manufacturer equivalents like Nexperia 74HC390D or Texas Instruments CD74HC390M96 may be considered if pin compatibility is verified.