SN74HC191N3

Counter Dividers Overview

The SN74HC191N3 is a 4-bit synchronous up/down binary counter manufactured by Texas Instruments. It operates within a wide supply voltage range of 2 V to 6 V and supports counting rates up to 24 MHz. The device features asynchronous reset, positive-edge triggering, and outputs capable of driving up to 10 LSTTL loads. Typical propagation delay is 13 ns, with maximum supply current of 80 µA. It is available in SOIC-16 and PDIP packages, operating from -40°C to +85°C.

Counter Dividers Feature Summary

• Synchronous 4-bit up/down binary counting capability
• Wide operating voltage range supporting 2 V to 6 V
• Asynchronous reset function for immediate state clearing
• High-speed operation with 24 MHz count rate

Counter Dividers Applications

• Digital frequency division circuits
• Position control systems requiring bidirectional counting
• Timing sequence generation in embedded systems
• Data acquisition system address counters

Counter Dividers Procurement Notes

Verify the package type (SOIC or PDIP) matches your PCB footprint requirements. Confirm the temperature grade (-40°C to +85°C) suits your operational environment. Ensure supply voltage constraints align with your system design. Check for RoHS compliance status if required by your manufacturing standards. Validate pinout compatibility during integration.

Counter Dividers Selection Notes

Select this component when synchronous bidirectional counting is required with low power consumption. Consider the 2 V to 6 V operating range for flexibility in logic family interfacing. Evaluate the 13 ns typical propagation delay against your system timing requirements. Assess the 10 LSTTL load drive capability for direct interfacing needs.

Counter Dividers Part Context

The SN74HC191N3 belongs to Texas Instruments' 74HC series of high-speed CMOS logic devices. It is part of the broader SN74HC191 family, which includes variants like SN74HC191NS and SN74HC191DR. This specific suffix indicates a particular packaging or revision variant within the standard 4-bit synchronous counter product line.

Counter Dividers Replacement Considerations

Compatible substitutes include SN74HC191D, SN74HC191NS, and SN74HC191DR. Verify package compatibility and electrical specifications before substitution. Ensure functional equivalence in counting direction and reset behavior.