CD74HCT191M

Counter Dividers Overview

The CD74HCT191M is a synchronous, positive edge-triggered binary counter belonging to the HCT series. It features a 4-bit bidirectional counting capability and utilizes CMOS technology. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports asynchronous load and preset functions. It is housed in a 16-pin PDSO package with a maximum operating frequency of 20 MHz. The component is rated for an extended temperature range from -55 °C to 125 °C.

Counter Dividers Feature Summary

• Synchronous positive edge-triggered operation
• Bidirectional up/down counting capability
• Asynchronous load and preset inputs

Counter Dividers Applications

• Digital counting circuits
• Frequency division applications
• Timing sequence generation

Counter Dividers Procurement Notes

Verify manufacturer origin as Harris Corporation or Texas Instruments due to historical transitions. Confirm RoHS compliance status as non-compliant based on available data. Validate package type PDSO16 and pin configuration against official datasheets before integration.

Counter Dividers Selection Notes

Select this component for designs requiring synchronous 4-bit bidirectional counting with HCT logic level compatibility. Ensure power supply stability between 4.5 V and 5.5 V. Consider the 20 MHz maximum frequency limit for high-speed timing requirements.

Counter Dividers Part Context

This part belongs to the 74HCT logic family, designed for high-speed CMOS operation with TTL-compatible inputs. The CD74HCT191M specifically addresses applications needing reliable synchronous binary counting with flexible direction control and initialization capabilities.

Counter Dividers Replacement Considerations

Check for equivalents like SN74HCT191 from Texas Instruments. Verify pinout compatibility and electrical characteristics match before substitution.