74HC191N,652

Counter Dividers Overview

The SN74HC191N,652 is a synchronous 4-bit binary up/down counter manufactured by NXP Semiconductors. It operates within a supply voltage range of 2 V to 6 V and supports a maximum counting rate of 24 MHz at 5 V. The device features asynchronous reset, positive-edge triggering, and bidirectional counting capability via separate clock inputs. It is housed in a 16-DIP package with an operating temperature range of -40°C to +125°C.

Counter Dividers Feature Summary

• Synchronous 4-bit binary up/down counting functionality
• Bidirectional control through dedicated Up and Down clock inputs
• Asynchronous reset mechanism for immediate state clearing
• Wide operating voltage range supporting low-power applications

Counter Dividers Applications

• Digital frequency division circuits
• Event counting systems
• Time-base generation modules
• Address decoding logic

Counter Dividers Procurement Notes

Verify the specific manufacturer designation, as the model prefix indicates Texas Instruments while the suffix suggests NXP origin. Confirm the package type matches the required DIP-16 form factor. Ensure the datasheet corresponds to the HC logic family specifications rather than HCT variants. Validate that the component meets the required voltage and temperature operational parameters for the intended design environment.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit bidirectional counter is required with wide voltage compatibility. The HC series offers high noise immunity and low power consumption compared to older TTL standards. Consider the 24 MHz speed limit for high-frequency timing applications. Verify pinout compatibility if replacing existing designs with similar logic families.

Counter Dividers Part Context

This part belongs to the 74HC logic family, representing high-speed CMOS technology. It serves as a successor to earlier 74-series logic, providing improved switching speeds and lower power dissipation. The 74HC191 specifically addresses applications requiring precise synchronous counting with flexible up or down direction control capabilities.

Counter Dividers Replacement Considerations

The 74HC191D-T is a documented substitute variant from NXP. Verify package compatibility between DIP and SOIC formats if physical mounting constraints exist. Ensure electrical characteristics match the original design requirements.