SN74ALS867ADW

Counter Dividers Overview

The SN74ALS867ADW is a synchronous, presettable 8-bit up/down counter from the Texas Instruments ALS logic family. It features internal-carry look-ahead circuitry for high-speed cascading and operates on the rising edge of the clock signal. The device supports parallel loading, asynchronous clear, and independent count enable inputs (ENP, ENT). It is housed in a 24-pin Small-Outline (DW) package and functions within a supply voltage range of 4.5 V to 5.5 V.

Counter Dividers Feature Summary

• Synchronous operation with simultaneous flip-flop triggering eliminates output counting spikes.
• Internal carry look-ahead circuitry enables efficient n-bit cascading without external gating.
• Fully programmable architecture allows parallel loading of any value between 0 and 255.
• Asynchronous clear function provides immediate reset capability independent of the clock.

Counter Dividers Applications

• High-speed synchronous counting applications
• Multi-stage binary counters via cascading
• Programmable timing sequences
• Digital frequency division circuits

Counter Dividers Procurement Notes

Verify the specific suffix 'ADW' corresponds to the SOIC-24 plastic package configuration. Confirm that the asynchronous clear feature aligns with system requirements, as the SN74ALS869 variant utilizes synchronous clear instead. Ensure component sourcing matches the active production status indicated in official documentation.

Counter Dividers Selection Notes

Select this component when synchronous counting with minimal propagation delay is required. The ALS series offers a balance of speed and power consumption suitable for general-purpose digital systems. Consider the SN74ALS869 if synchronous clearing is preferred over asynchronous clearing for the same functional application.

Counter Dividers Part Context

This part belongs to the SN74ALS867A/869 family of synchronous 8-bit up/down counters. It shares architectural similarities with the SN74AS867 but differs in electrical characteristics and switching speeds defined by the Advanced Low-power Schottky technology.

Counter Dividers Replacement Considerations

SN74ALS869DW serves as a functional substitute with identical pinout and logic, differing only in its use of synchronous clear rather than asynchronous clear.