MC74AC163NG

Counter Dividers Overview

The MC74AC163NG is a synchronous presettable modulo-16 binary counter manufactured by onsemi. It operates within a supply voltage range of 2 V to 6 V and supports a typical count rate of 125 MHz. The device features four flip-flop outputs (Q0-Q3) and utilizes D-type edge-triggered logic for state changes synchronized with the rising clock edge. It includes two count enable inputs (CEP, CET), parallel data inputs (P0-P3), and a terminal count output (TC). Unlike the AC161 variant, this model employs a synchronous reset input that clears outputs on the next clock transition.

Counter Dividers Feature Summary

• Synchronous counting and loading capabilities allow precise state management without asynchronous glitches.
• High-speed synchronous expansion facilitates the formation of multistage counters using the Terminal Count output.
• Parallel load functionality enables direct data injection into flip-flops via dedicated P0-P3 inputs.

Counter Dividers Applications

• Programmable frequency dividers
• Synchronous multistage counter systems
• Digital timing sequence generators

Counter Dividers Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status as the device is available in lead-free packages. Check datasheet revisions for any updates to electrical characteristics or pin assignments prior to integration.

Counter Dividers Selection Notes

Select this component when synchronous reset behavior is required rather than asynchronous clearing. Ensure operating voltage aligns with the 2 V to 6 V specification. Consider propagation delay limits at target frequencies and verify package compatibility with existing PCB footprints.

Counter Dividers Part Context

This part belongs to the 74AC series of high-speed CMOS logic devices. It shares functional similarities with the MC74AC161 but differs in its reset mechanism. The N suffix indicates a 16-lead Plastic Dual In-line Package (PDIP).

Counter Dividers Replacement Considerations

CD74AC163E from Texas Instruments is a confirmed substitute part number.