SN74ALS161BDRE4

Counter Dividers Overview

The SN74ALS161BDRE4 is a 4-bit synchronous binary counter from the Texas Instruments ALS logic family. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum counting rate of 40 MHz. The device features an asynchronous reset, positive-edge triggering, and a synchronous parallel load capability. It is housed in a 16-SOIC package with a wide operating temperature range of 0°C to +70°C.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting with up-counting direction
• Asynchronous master reset for immediate clearing of outputs
• Synchronous parallel data loading via dedicated inputs
• Positive-edge clock triggering for precise timing control

Counter Dividers Applications

• Digital frequency division circuits
• Event counting systems
• Timing sequence generation
• Pulse width modulation controllers

Counter Dividers Procurement Notes

Verify the specific suffix 'E4' indicates lead-free compliance and RoHS status during procurement. Confirm the SOIC-16 package dimensions match the design footprint. Ensure the 40 MHz maximum frequency rating aligns with the system clock requirements. Check that the 4.5 V to 5.5 V supply voltage range is compatible with the target power rail.

Counter Dividers Selection Notes

Select this component when high-speed synchronous counting is required within standard TTL-compatible voltage levels. The ALS series offers faster propagation delays compared to standard LS logic while maintaining lower power consumption than AS series devices. Consider the 16-pin surface mount package for compact PCB layouts requiring robust signal integrity at higher frequencies.

Counter Dividers Part Context

This part belongs to the SN74ALS161B family of synchronous counters. It shares functional compatibility with other 74ALS161 variants but may differ in packaging or environmental compliance markings. The device is designed for applications requiring reliable binary counting with synchronous control signals in industrial and commercial electronic systems.

Counter Dividers Replacement Considerations

SN74ALS161BDRE4G4 is a verified equivalent part number offering identical functionality and specifications.