74HC191P-E

Counter Dividers Overview

The CD74HC191E is a synchronous 4-bit binary up/down counter manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 2V to 6V and supports bidirectional counting modes controlled by dedicated inputs. The device features parallel data loading capabilities, allowing direct input of count values. It includes an output enable function for controlling data transmission to downstream logic. The component is designed for high-speed operation with a maximum frequency of 20 MHz at nominal supply voltages. It utilizes a standard 16-pin plastic dual in-line package (DIP) suitable for through-hole mounting on printed circuit boards.

Counter Dividers Feature Summary

• Synchronous 4-bit binary up/down counting functionality
• Parallel data load capability for immediate value setting
• Bidirectional control via dedicated up/down input pin
• Output enable feature for managing data bus access

Counter Dividers Applications

• Digital timing and sequencing circuits
• Frequency division and pulse counting systems
• Position control applications requiring binary state tracking
• General-purpose digital logic counters in embedded systems

Counter Dividers Procurement Notes

Verify the specific suffix 'E' against the official Renesas datasheet to confirm package type and temperature grade. Ensure compatibility with existing PCB footprints for DIP-16 packages. Check RoHS compliance status as indicated in the product documentation. Confirm lead availability and lifecycle status directly with authorized distributors or Renesas sales representatives prior to ordering.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit binary counter with parallel load and bidirectional control is required. Consider the HC logic family characteristics regarding speed and power consumption relative to system needs. Evaluate the operating voltage range against the target application's power supply constraints. Verify that the 16-pin DIP package fits the mechanical design requirements of the final assembly.

Counter Dividers Part Context

The 74HC191 belongs to the widely adopted 74HC series of high-speed CMOS logic devices. This series offers performance comparable to standard TTL logic but with lower power consumption and wider voltage tolerance. Renesas manufactures these components to meet industry-standard JEDEC specifications, ensuring interoperability with other logic families from various vendors in mixed-voltage designs.

Counter Dividers Replacement Considerations

Cross-reference with equivalent parts such as the Nexperia 74HC191PW or Texas Instruments SN74HC191N. Verify pinout compatibility and electrical parameters before substitution. Ensure the alternative part meets the same synchronous operation and parallel load requirements.