MC74HCT163AD

Counter Dividers Overview

The MC74HCT163AD is a high-speed silicon-gate CMOS synchronous 4-bit binary counter manufactured by onsemi. It operates within a supply voltage range of 4.5 V to 5.5 V and features a 16-pin SOIC package. The device includes synchronous preset capability, allowing data loading on the clock edge, and a synchronous reset function that clears outputs simultaneously with the clock transition. It provides two count enable inputs for versatile cascading and a terminal count output for multi-stage applications.

Counter Dividers Feature Summary

• Synchronous presettable architecture enables parallel data loading aligned with the clock signal
• Synchronous reset functionality allows simultaneous clearing of all outputs on the rising clock edge
• Dual count enable inputs facilitate flexible control over counting operations in complex circuits

Counter Dividers Applications

• Programmable frequency dividers requiring precise synchronous control
• Synchronous multi-stage counter systems for timing and sequencing
• Digital logic circuits interfacing between TTL and CMOS domains

Counter Dividers Procurement Notes

Verify component authenticity through official onsemi channels or authorized distributors. Confirm the specific suffix indicates the SOIC-16 package and lead-free status. Check current lifecycle status as HCT variants may have limited availability compared to HC series. Ensure storage conditions comply with moisture sensitivity levels for surface-mount devices.

Counter Dividers Selection Notes

Select this part when synchronous operation is required rather than asynchronous alternatives like the 74LS163. Choose the HCT series specifically for direct compatibility with standard TTL logic levels without external pull-up resistors. Consider the HC variant if a wider voltage range below 4.5 V is necessary. Verify package constraints against PCB layout requirements for the SOIC-16 footprint.

Counter Dividers Part Context

This component belongs to the 74HCT logic family, designed for high-speed digital applications. It shares pinout compatibility with older LS-series counters but utilizes modern CMOS technology for lower power consumption. The MC74HC163A serves as the broader family reference, while the HCT variant ensures specific voltage level matching for TTL-driven systems.

Counter Dividers Replacement Considerations

MC74HC163AD: Compatible alternative with wider voltage range but requires level shifting for TTL interfaces. MC74ACT163DW: Faster performance option with similar synchronous features. MC74LS163N: Legacy asynchronous reset version with different switching characteristics.