74HCT191N,652

Counter Dividers Overview

The NXP USA Inc. 74HCT191N,652 is a presettable synchronous 4-bit binary up/down counter manufactured by Nexperia under the HCT logic family. It features asynchronous parallel load capability and synchronous count-up or count-down operation controlled by a single direction input. The device operates on a supply voltage range of 2.0 V to 6.0 V with CMOS low power dissipation. It includes terminal count (TC) and ripple clock (RC) outputs for multistage expansion. The component supports operating temperatures from -40 °C to +125 °C and complies with JEDEC standards.

Counter Dividers Feature Summary

• Synchronous reversible counting with asynchronous parallel load
• Single up/down control input for direction selection
• Count enable control facilitating synchronous expansion
• High noise immunity and latch-up performance exceeding 100 mA

Counter Dividers Applications

• Multistage counter designs using ripple clock or synchronous carry gating
• Digital timing and sequencing circuits requiring presettable values
• Frequency division applications in digital systems

Counter Dividers Procurement Notes

Verify that the specific part number 74HCT191N,652 matches the required package type and temperature range. Confirm compatibility with the HCT logic family voltage levels. Ensure the source document aligns with the manufacturer's current product data sheet specifications before finalizing procurement decisions.

Counter Dividers Selection Notes

Select this component when a 4-bit bidirectional counter with synchronous operation and asynchronous preset is required. The HCT series ensures TTL-compatible input levels while maintaining CMOS output characteristics. Consider the available package options and thermal requirements for the intended application environment.

Counter Dividers Part Context

This component belongs to the 74HC/HCT series of digital logic integrated circuits produced by Nexperia. The series is designed for general-purpose digital applications, offering high speed and low power consumption. The 74HCT variant specifically provides compatibility with standard TTL logic inputs.

Counter Dividers Replacement Considerations

Public confirmed substitute part numbers include 74HC191D,652 and 74HC191PW,652.