MC74ACT163DG

Counter Dividers Overview

The MC74ACT163DG is a high-speed synchronous modulo-16 binary counter from the 74ACT logic series, manufactured by onsemi. It features a Synchronous Reset input that overrides counting and parallel loading, allowing outputs to reset on the rising clock edge. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a typical count rate of 125 MHz. It includes two Count Enable inputs (CEP, CET) and a Terminal Count output for multistage expansion. Packaged in a 16-lead SOIC (D suffix), it utilizes D-type edge-triggered flip-flops with TTL-compatible inputs.

Counter Dividers Feature Summary

• Synchronous presettable binary counting with modulo-16 sequence
• TTL compatible inputs for direct interfacing
• Outputs capable of sourcing and sinking 24 mA

Counter Dividers Applications

• Programmable frequency dividers
• Synchronous multistage counters
• Digital timing circuits

Counter Dividers Procurement Notes

Verify component authenticity through authorized channels as this part number is obsolete. Confirm RoHS compliance status and check for valid replacement equivalents like the MC74ACT163DR2G before finalizing procurement plans. Ensure storage conditions meet specified moisture sensitivity levels.

Counter Dividers Selection Notes

Select this component when synchronous reset functionality is required instead of asynchronous clearing. It is suitable for designs needing TTL-compatible inputs at 5V logic levels. Consider the SOIC-16 package constraints and thermal resistance values during PCB layout planning.

Counter Dividers Part Context

This device belongs to the MC74AC(T)161/163 family of high-speed synchronous binary counters. Unlike the MC74ACT161 which uses asynchronous reset, the MC74ACT163 provides synchronous reset control. It shares the same pinout and general architecture as its AC counterpart but offers specific ACT electrical characteristics.

Counter Dividers Replacement Considerations

Public confirmed substitute: MC74ACT163DR2G.