MC74ACT163D

Counter Dividers Overview

The MC74ACT163D is a high-speed synchronous modulo-16 binary counter from the 74ACT logic family, manufactured by onsemi. It features four D-type flip-flops and operates with a supply voltage range of 4.5 V to 5.5 V. The device utilizes TTL-compatible inputs and provides outputs capable of sourcing or sinking 24 mA. Key functional characteristics include synchronous presettable loading, two count enable inputs (CEP and CET), and a terminal count output for multistage expansion. Unlike the asynchronous reset variant, this model incorporates a synchronous reset input that clears outputs on the rising clock edge.

Counter Dividers Feature Summary

• Synchronous counting and parallel data loading controlled by dedicated enable inputs
• TTL-compatible inputs allowing direct interfacing with standard TTL logic families
• High-drive outputs providing 24 mA source and sink current capability
• Terminal count output facilitates cascading for synchronous multistage counter designs

Counter Dividers Applications

• Programmable frequency dividers in digital timing circuits
• Synchronous multistage counters requiring precise state sequencing
• Digital event counting systems utilizing parallel load capabilities
• Timing control modules within industrial automation equipment

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'D' corresponds to the SOIC-16 package configuration required for your printed circuit board layout. Confirm that the procurement channel sources genuine onsemi components to ensure compliance with the specified electrical parameters and operating temperature ranges defined in the official datasheet.

Counter Dividers Selection Notes

Select this component when a synchronous reset mechanism is preferred over asynchronous clearing to maintain clock alignment. The ACT series offers superior speed compared to standard HC logic while maintaining TTL input compatibility. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage requirement and the 24 mA output drive strength for the intended load conditions.

Counter Dividers Part Context

This part belongs to the MC74AC/ACT161/163 family of synchronous binary counters. The 'ACT' designation indicates CMOS technology with TTL-compatible input thresholds. The '163' suffix specifically denotes the presence of a synchronous reset input, distinguishing it from the '161' which features an asynchronous master reset. Both variants share identical counting logic and pinout configurations.

Counter Dividers Replacement Considerations

Public confirmed substitute part numbers: CD74ACT163M (Texas Instruments). Verify pinout compatibility and electrical specifications before substitution.