SN74LS161ADR

Counter Dividers Overview

The SN74LS161ADR is a synchronous 4-bit binary counter manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a maximum counting rate of 25 MHz. The device features asynchronous reset, positive-edge triggering, and an up-counting direction. It is housed in a 16-SOIC surface-mount package with a width of 3.90 mm. The component functions reliably across an operating temperature range of 0°C to 70°C.

Counter Dividers Feature Summary

• Synchronous four-bit binary counting architecture
• Asynchronous master reset capability
• Positive-edge clock triggering mechanism

Counter Dividers Applications

• Digital frequency division circuits
• Sequential logic control systems
• Binary event counting applications

Counter Dividers Procurement Notes

Verify the specific suffix 'ADR' confirms the SOIC-16 surface mount package and tape-and-reel shipping format. Confirm RoHS3 compliance status for environmental regulations. Ensure the manufacturer is Texas Instruments to guarantee compatibility with standard 74LS logic families. Validate that the part number matches the required 25 MHz speed grade.

Counter Dividers Selection Notes

Select this component when a synchronous 4-bit binary counter with asynchronous reset is required in a surface-mount design. The 74LS series offers standard TTL-compatible logic levels suitable for general-purpose digital applications. Consider the 25 MHz maximum frequency limit for timing constraints. The SOIC-16 package facilitates automated assembly processes compared to through-hole alternatives.

Counter Dividers Part Context

This device belongs to the SN74LS161 family of synchronous counters. It shares functional similarities with other 74-series logic components but utilizes Low-power Schottky technology for improved performance. The 'ADR' suffix specifically denotes the SOIC package type and reel packaging configuration provided by the manufacturer.

Counter Dividers Replacement Considerations

SN74LS161ADRE4

Counter Dividers FAQ

What is the trigger edge for the clock input?

The SN74LS161ADR uses positive-edge triggering for its clock input.

How does the reset function operate?

The reset function is asynchronous, allowing immediate clearing of outputs regardless of the clock state.