SN74LS161ADRG4

Counter Dividers Overview

The SN74LS161ADRG4 is a 4-bit synchronous binary counter from Texas Instruments, part of the 74LS logic family. It features asynchronous clear and parallel load capabilities, with a clock input that triggers on the positive edge. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum counting rate of 25 MHz. It is housed in a 16-pin SOIC package and functions across an operating temperature range of 0°C to 70°C.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting triggered by positive clock edges
• Asynchronous master reset for immediate clearing of all outputs
• Parallel data loading capability via dedicated inputs
• Carry output generation for cascading multiple counter stages

Counter Dividers Applications

• Digital frequency division circuits
• Sequential event timing control systems
• Pulse counting applications in industrial instrumentation
• Address generation for memory or I/O devices

Counter Dividers Procurement Notes

Verify the component authenticity by checking the manufacturer's marking code against official documentation. Confirm the RoHS compliance status indicated by the suffix. Ensure the package type matches the required PCB footprint specifications. Validate the operating temperature range suitability for the intended environment before finalizing procurement decisions.

Counter Dividers Selection Notes

Select this component when synchronous counting with high noise immunity is required. The LS series offers a balance between speed and power consumption suitable for general-purpose digital logic. Consider the 16-pin SOIC package for surface-mount assembly constraints. Verify compatibility with existing 5V logic levels in the system design.

Counter Dividers Part Context

This part belongs to the standard 74LS161 family of synchronous counters. It serves as a fundamental building block for sequential logic designs requiring precise state tracking. The device is widely used in educational kits and legacy industrial control systems where reliable binary counting is essential.

Counter Dividers Replacement Considerations

The SN74LS161ADR is a direct functional equivalent with identical electrical characteristics. Other variants within the 74LS161 series may offer different packaging options but maintain core functionality. Ensure any substitute maintains the same pinout configuration and voltage requirements.