74AC163SC

Counter Dividers Overview

The Fairchild Semiconductor 74AC163SC is a synchronous presettable binary counter belonging to the AC series. It features a 4-bit up-counting architecture with positive edge triggering and CMOS technology. The device utilizes a PDSO16 package, also identified as SOIC-16, containing 16 pins. Key electrical parameters include a maximum output current of 0.024 A and a load capacitance of 50 pF. It supports synchronous loading and includes a terminal count output for cascading applications.

Counter Dividers Feature Summary

• Synchronous counting and loading mechanism ensures all flip-flops update simultaneously on the clock edge.
• Internal look-ahead carry simplifies serial cascading of multiple counters for higher bit counts.
• Synchronous reset feature allows modification of maximum count sequences using minimal external logic.

Counter Dividers Applications

• Programmable frequency dividers
• Synchronous multi-stage counter systems
• Digital timing and sequencing circuits

Counter Dividers Procurement Notes

Verify the specific suffix 'SC' against official Fairchild documentation to confirm pinout compatibility and package dimensions. Ensure the component meets required environmental standards, as some variants may not be RoHS compliant. Cross-reference datasheets for propagation delays and operating voltage ranges to match system requirements precisely.

Counter Dividers Selection Notes

Select this component when a synchronous binary counter with preset capability is required. The AC series offers high-speed performance suitable for modern digital systems. Consider the 74ACT163 variant if TTL-compatible input levels are necessary instead of standard CMOS levels. Verify package availability in SOIC-16 format for PCB layout constraints.

Counter Dividers Part Context

This part belongs to the 74AC family of high-speed CMOS logic devices. It is functionally related to other 4-bit counters like the 74LS163 but operates at significantly higher speeds due to the AC technology. The synchronous nature distinguishes it from asynchronous ripple counters, providing more predictable timing behavior in complex digital designs.

Counter Dividers Replacement Considerations

The 74HC163 or 74HCT163 are direct functional equivalents offering similar synchronous binary counting capabilities. The 74ACT163 serves as a compatible alternative with TTL-compatible input thresholds. Verify pinout and electrical specifications before substitution.