SN74ALS561ADW

Counter Dividers Overview

The SN74ALS561ADW is a synchronous binary counter manufactured by Texas Instruments in the ALS logic family. It features a 4-bit counting sequence with positive edge triggering and includes three-state outputs for bus-oriented applications. The device operates within a supply voltage range of 4.75 V to 5.25 V and is housed in a 20-pin SOIC package. It supports up/down counting directions and is designed for industrial temperature ranges from 0°C to +70°C.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting architecture with positive edge triggering
• Three-state outputs enabling direct connection to system buses
• Up/Down counting direction control capability

Counter Dividers Applications

• Digital frequency division circuits
• Event counting systems
• Timing sequence generation modules

Counter Dividers Procurement Notes

Verify the specific suffix 'A' and 'DW' against the manufacturer's current datasheet to confirm pinout compatibility and electrical specifications. Ensure the component meets the required operating temperature range and voltage levels for your specific application environment before finalizing procurement.

Counter Dividers Selection Notes

Select this component when a synchronous, bidirectional binary counter with high-impedance outputs is required. It is suitable for designs needing precise timing synchronization and bus isolation. Consider power consumption and propagation delay characteristics relative to other logic families if speed or efficiency is critical.

Counter Dividers Part Context

This part belongs to the Texas Instruments SN74ALS series, which utilizes Advanced Low-power Schottky technology. This family offers improved speed and lower power dissipation compared to standard LS logic. The SN74ALS561ADW specifically addresses applications requiring reliable synchronous counting with output tri-stating capabilities in a surface-mount package.

Counter Dividers Replacement Considerations

Consult official cross-reference lists for compatible alternatives such as the SN74LS561 or equivalent TTL counters. Verify that any substitute maintains identical pin configurations, voltage tolerances, and functional behavior to ensure seamless integration without circuit redesign.