CD74HC191EG4

Counter Dividers Overview

The CD74HC191EG4 is a high-speed CMOS logic presettable synchronous 4-bit binary up/down counter manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports bidirectional counting modes. The device features asynchronous reset and load capabilities, utilizing positive-edge triggering for clock synchronization. It is housed in a 16-pin PDIP package with an operating temperature range spanning from -55 °C to +125 °C.

Counter Dividers Feature Summary

• Synchronous 4-bit binary up/down counting functionality
• Asynchronous parallel load and clear inputs
• High-speed CMOS technology for low power consumption
• Bidirectional count direction control

Counter Dividers Applications

• Digital frequency division circuits
• Presettable timing sequences
• Binary data storage and manipulation
• Industrial control system counters

Counter Dividers Procurement Notes

Verify the specific EG4 suffix indicates lead-free construction and compliance with RoHS directives when sourcing. Confirm the PDIP-16 package dimensions match your PCB footprint requirements. Ensure the supplier provides traceability documentation for the Texas Instruments manufacturing origin to guarantee component authenticity and quality standards.

Counter Dividers Selection Notes

Select this component for applications requiring synchronous bidirectional counting with asynchronous control inputs. The wide supply voltage range allows compatibility with various logic families. Consider the PDIP package for through-hole prototyping or environments requiring robust mechanical mounting compared to surface-mount alternatives.

Counter Dividers Part Context

This part belongs to the Texas Instruments 74HC series of high-speed CMOS logic devices. The 74HC191 specifically designates a 4-bit presettable up/down counter. The EG4 variant typically denotes a lead-free version of the standard CD74HC191E, adhering to environmental regulations while maintaining identical electrical performance characteristics as the non-EG4 counterpart.

Counter Dividers Replacement Considerations

CD74HC191E serves as the direct functional equivalent without the lead-free designation.