74AC161MTR

Counter Dividers Overview

The STMicroelectronics 74AC161MTR is a synchronous presettable 4-bit binary counter fabricated with advanced high-speed CMOS technology. It operates within a supply voltage range of 2V to 6V and features asynchronous clear, parallel load, count-up, and hold modes. The device supports a maximum clock frequency of 125MHz at 5V and includes protection circuits against static discharge providing 2kV ESD immunity. It utilizes a 16-pin SOIC package.

Counter Dividers Feature Summary

• Advanced high-speed CMOS fabrication for balanced propagation delays
• Synchronous presettable 4-bit binary counting capability
• Asynchronous master reset overriding other control inputs
• High noise immunity and transmission line driving capability

Counter Dividers Applications

• Digital timing and sequencing circuits
• Frequency division applications
• Event counting systems
• General-purpose digital logic designs

Counter Dividers Procurement Notes

Verify the specific ordering code suffix 'MTR' corresponds to the Tape & Reel packaging format as indicated in official documentation. Confirm that the component status aligns with current availability, noting potential obsolete designations in older datasheets. Ensure compatibility with standard surface-mount assembly processes for the specified package type.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit counter with parallel loading is required. It is suitable for designs needing high-speed operation up to 125MHz and low power dissipation. Consider the operating voltage range of 2V to 6V for interface compatibility with various logic families.

Counter Dividers Part Context

This part belongs to the 74AC series of logic devices, representing an advancement over standard 74LS counterparts with higher speed and lower power consumption. The 74AC161 specifically provides a 4-bit binary counter function, widely used in digital electronics for time-base generation and data processing tasks.

Counter Dividers Replacement Considerations

Direct pin-compatible replacements include the DIP version 74AC161B or SOP version 74AC161. Verify functional equivalence regarding electrical characteristics and package dimensions before substitution.