CD74ACT161E

Counter Dividers Overview

The CD74ACT161E is a synchronous 4-bit binary up-counter from the ACT series, manufactured by Harris Corporation. It operates on CMOS technology with a positive edge-triggered clock mechanism. The device features an asynchronous reset input and parallel load capability. It is housed in a 16-pin PDIP package. Key electrical specifications include a maximum operating frequency of 90 MHz at nominal supply voltage, a maximum output current of 24 mA, and a load capacitance rating of 50 pF. The component supports an operating temperature range extending up to 125 °C.

Counter Dividers Feature Summary

• Synchronous 4-bit binary counting with up-direction operation
• Asynchronous reset functionality for immediate state clearing
• Parallel data loading capability via dedicated inputs
• TCO (Terminal Count Output) generation for cascading applications

Counter Dividers Applications

• Digital timing and sequencing circuits
• Frequency division networks
• Event counting systems
• Digital control logic interfaces

Counter Dividers Procurement Notes

Verify the manufacturer designation carefully, as Texas Instruments acquired Harris Semiconductor's logic assets. Ensure the specific part number matches the required ACT series performance characteristics. Confirm package integrity for the 16-pin DIP configuration. Check RoHS compliance status if environmental regulations apply to the target assembly. Validate that the supplier provides traceable documentation for the component origin.

Counter Dividers Selection Notes

Select this component when synchronous 4-bit counting with high-speed ACT performance is required. The 90 MHz frequency capability suits high-speed digital designs compared to standard HC or HCT counterparts. The asynchronous reset feature allows for immediate system initialization without waiting for clock cycles. Consider the PDIP16 package for through-hole prototyping or legacy board compatibility.

Counter Dividers Part Context

This component belongs to the CD74ACT family of high-speed CMOS logic devices originally developed by Harris Semiconductor. The ACT series was designed to offer performance levels comparable to LS logic but with CMOS power consumption benefits. Following corporate acquisitions, these products are often associated with Texas Instruments' portfolio. The CD74ACT161E specifically implements the standard 74ACT161 logical function in a commercial-grade temperature range variant.

Counter Dividers Replacement Considerations

CD74ACT161N

Counter Dividers FAQ

Is the reset function synchronous or asynchronous?

The reset function is asynchronous, meaning it clears the counter outputs immediately regardless of the clock signal state.

What is the maximum operating frequency specified for this device?

The maximum operating frequency is 90 MHz at the nominal supply voltage.