SN74AS161N

Counter Dividers Overview

The SN74AS161N is a synchronous 4-bit binary counter from the Texas Instruments SN74AS 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 utilizes a 16-pin PDIP package for through-hole mounting. It features asynchronous reset functionality and counts in an upward direction on the positive edge of the clock signal.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting with positive-edge triggering
• Asynchronous master reset capability for immediate state clearing
• High-speed AS logic family performance characteristics

Counter Dividers Applications

• Digital timing and sequencing circuits
• Frequency division applications
• Event counting systems

Counter Dividers Procurement Notes

Verify the specific manufacturer origin, as the SN74AS161N designation may be produced by Texas Instruments or other authorized licensees such as onsemi under the DM prefix. Confirm that the component matches the required 16-pin PDIP through-hole package and meets the specified 4.5 V to 5.5 V operating voltage constraints before integration into the design.

Counter Dividers Selection Notes

Select this component when high-speed synchronous counting is required within standard 5 V logic environments. The AS series offers superior speed compared to LS variants while maintaining compatible pinouts. Ensure the application requires a 4-bit capacity and does not necessitate the extended temperature ranges or wider voltage supplies found in HC or HCT families.

Counter Dividers Part Context

This part belongs to the SN54/74AS (Advanced Schottky) logic family, designed for high-speed digital applications. It serves as a direct functional replacement for earlier 74161 designs but with improved switching speeds. The device is widely used in industrial and commercial equipment requiring reliable binary counting operations.

Counter Dividers Replacement Considerations

The DM74AS161N manufactured by onsemi is documented as a direct substitute for the Texas Instruments SN74AS161N.