SN74ALS161BD

Counter Dividers Overview

The SN74ALS161BD is a synchronous 4-bit binary counter from the Texas Instruments ALS logic series. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to +70°C. The device features positive edge triggering, asynchronous reset, and up-counting direction. It is housed in a 16-pin Small Outline Package (SOP) with a maximum power consumption current of 21 mA.

Counter Dividers Feature Summary

• Synchronous 4-bit binary counting with positive edge triggering
• Asynchronous reset capability for immediate state clearing
• Up-counting direction with dedicated load and enable inputs

Counter Dividers Applications

• Digital timing sequences
• Frequency division circuits
• Event counting systems

Counter Dividers Procurement Notes

Verify the specific manufacturer source, as NXP also produces the 74ALS161BD variant. Confirm that the package designation corresponds to the 16-pin SOP form factor. Ensure the component meets the required 4.5 V to 5.5 V operating voltage and industrial temperature specifications before integration into the design.

Counter Dividers Selection Notes

Select this component when a low-power Schottky TTL compatible counter is required. It offers faster switching speeds than standard LS logic while maintaining lower power dissipation. Verify compatibility with existing system voltage levels and ensure the SOP footprint matches the PCB layout constraints.

Counter Dividers Part Context

This part belongs to the 74ALS161 family of synchronous binary counters. It provides four bits of storage with parallel load functionality. The ALS series is characterized by improved speed and reduced power consumption compared to earlier logic families, making it suitable for high-density digital applications requiring reliable counting operations.

Counter Dividers Replacement Considerations

SN74AS161NSR

Counter Dividers FAQ

What type of reset mechanism does the SN74ALS161BD use?

It utilizes an asynchronous reset input that immediately clears all outputs regardless of the clock signal.

Is the counting operation synchronized with the clock?

Yes, the counter advances on the positive edge of the clock signal, ensuring synchronous operation.