SN74HC191D

Counter Dividers Overview

The SN74HC191D is a synchronous 4-bit up/down binary counter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports a maximum counting rate of 24 MHz. The device features asynchronous reset functionality and positive-edge triggering for its flip-flops. Designed for surface-mount applications, it is housed in a 16-SOIC package with a width of 5.30 mm. The component functions reliably across an extended industrial temperature range from -40°C to +85°C.

Counter Dividers Feature Summary

• Synchronous 4-bit up/down binary counting capability
• Asynchronous reset mechanism for immediate state clearing
• Positive-edge triggered flip-flop architecture
• High-speed operation supporting up to 24 MHz counting rates

Counter Dividers Applications

• Digital frequency division circuits
• Sequential pulse generation systems
• Binary timing control logic
• Data processing sequence counters

Counter Dividers Procurement Notes

Verify the specific suffix against official Texas Instruments documentation to confirm package type and tape/reel specifications. Ensure the ordering part number matches the required SOIC-16 variant. Confirm RoHS compliance status through the manufacturer's current product data sheet before finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit bidirectional counter is required within standard HC logic families. It is suitable for designs needing wide voltage flexibility between 2 V and 6 V. Consider the 24 MHz speed limit and SOIC-16 footprint constraints during schematic capture and PCB layout planning.

Counter Dividers Part Context

This device belongs to the Texas Instruments SN74HC series of high-speed CMOS logic components. It serves as a fundamental building block for sequential digital logic design. The SN74HC191D provides a standardized interface for binary counting operations, integrating seamlessly with other HC-series logic gates and microcontrollers.

Counter Dividers Replacement Considerations

SN74HC191DR: Same functional logic with reel packaging variant.