M74HC40103B1R

Counter Dividers Overview

The M74HC40103B1R is an 8-stage presettable synchronous down counter fabricated with silicon gate C2MOS technology. It features a wide operating voltage range of 2V to 6V and high-speed operation with a maximum clock frequency of 38MHz at VCC = 6V. The device includes control inputs for enabling/disabling the clock, asynchronous clearing to the maximum count (255), and both synchronous and asynchronous presetting capabilities. All control inputs and the Carry-Out/Zero Detect output are active low logic.

Counter Dividers Feature Summary

• Supports synchronous down counting with programmable preset values via J0-J7 inputs
• Features active-low control inputs including Clear, Asynchronous Preset Enable, and Synchronous Preset Enable
• Provides a dedicated Carry-Out/Zero Detect output that signals when the internal count reaches zero

Counter Dividers Applications

• Programmable divide-by-N counters
• Parallel carry cascading systems
• Programmable timer circuits

Counter Dividers Procurement Notes

Verify the specific package type required, as the B1R suffix corresponds to the DIP-16 package in official documentation. Confirm RoHS compliance status and ensure the design accounts for the active-low logic levels of all control inputs and outputs during integration.

Counter Dividers Selection Notes

Select this component for designs requiring an 8-bit binary down counter with flexible preset options. It is suitable for applications needing precise frequency division or timing sequences where the ability to asynchronously or synchronously load initial values is critical for system control.

Counter Dividers Part Context

This device belongs to the STMicroelectronics HC series of high-speed CMOS logic components. It is functionally compatible with the standard 74 series 40103, allowing for direct pin-to-pin replacement in existing designs while offering improved speed and lower power consumption characteristics typical of modern CMOS technology.

Counter Dividers Replacement Considerations

No public confirmed substitute part numbers are available in the provided source material.