SN74AS869DW

Counter Dividers Overview

The SN74AS869DW is a synchronous 8-bit up/down counter from the AS logic series, housed in a 24-pin SOIC package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 45 MHz. The device features internal carry look-ahead for high-speed cascading and includes two count-enable inputs (ENP, ENT) and a ripple-carry output (RCO). Synchronous clear functionality allows outputs to agree with data inputs after the next clock pulse.

Counter Dividers Feature Summary

• Synchronous operation eliminates output counting spikes associated with asynchronous counters by clocking all flip-flops simultaneously.
• Internal carry look-ahead circuitry enables efficient n-bit cascading without additional external gating.
• Fully programmable design allows parallel loading of any preset value between 0 and 255 via synchronous load mode.

Counter Dividers Applications

• High-speed binary counting applications requiring precise timing synchronization
• Cascaded multi-stage digital systems utilizing internal carry look-ahead
• Programmable event counters with synchronous preset capabilities

Counter Dividers Procurement Notes

Verify the specific ordering suffix matches the required package variant and temperature rating. Confirm RoHS compliance status and lead finish specifications against current production data sheets. Ensure the component source aligns with Texas Instruments manufacturing standards for catalog-grade devices.

Counter Dividers Selection Notes

Select this component when synchronous counting with internal carry lookahead is required for high-speed designs. The AS series offers faster performance than ALS variants. Verify that the 24-pin SOIC package fits the board layout constraints and that the operating temperature range meets system environmental requirements.

Counter Dividers Part Context

This part belongs to the SN74AS family of synchronous counters. It shares architectural similarities with the SN74ALS869 but utilizes Advanced Schottky technology for higher speed. The DW suffix denotes the plastic small-outline package. It serves as a direct functional equivalent to other 8-bit synchronous counters within the same logic family hierarchy.

Counter Dividers Replacement Considerations

SN74ALS869DW