CD74HC191M

Counter Dividers Overview

The CD74HC191M is a synchronous, positive edge-triggered, 4-bit bidirectional binary counter manufactured by Harris Corporation. It belongs to the HCT/HC series and utilizes CMOS technology in a PDSO16 package. The device supports load/preset inputs for direct data entry and operates within a temperature range of -55°C to 125°C. It features a maximum operating frequency of 20 MHz at nominal supply voltage and has a load capacitance specification of 50 pF.

Counter Dividers Feature Summary

• Synchronous operation triggered by positive clock edges
• Bidirectional counting capability allowing up or down sequences
• Direct parallel load functionality via preset inputs

Counter Dividers Applications

• Digital counting circuits
• Control logic systems
• Frequency division applications

Counter Dividers Procurement Notes

Verify component authenticity as this part is obsolete. Confirm manufacturer origin between Harris Corporation and Texas Instruments due to historical acquisitions. Check RoHS compliance status as original Harris versions may not meet current environmental standards. Ensure package integrity for the 16-SOIC form factor during handling.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit bidirectional counter with parallel load is required. Consider the HC/HCT logic family compatibility for system integration. Verify voltage levels and temperature ranges against specific application requirements before finalizing the design choice.

Counter Dividers Part Context

This component is part of the standard 74HC/74HCT logic family produced by Harris Corporation. It serves as a fundamental building block for digital sequential logic designs. The device provides reliable binary counting functions in a compact surface-mount package suitable for various electronic assemblies.

Counter Dividers Replacement Considerations

CD74HC191MT3

Counter Dividers FAQ

Is the CD74HC191M a synchronous or asynchronous counter?

It is a synchronous counter where all flip-flops change state simultaneously on the positive edge of the clock signal.

What is the maximum operating frequency specified for this device?

The maximum operating frequency is 20 MHz at nominal supply voltage.