SN74HC4040DT

Overview

The SN74HC4040DT is a 12-bit asynchronous binary counter in a 16-pin SOIC package. It operates on a supply voltage of 2 V to 6 V and supports an operating temperature range of -40°C to 85°C. The device features a maximum clock frequency of 22 MHz at 5 V, with typical propagation delay of 12 ns. It provides outputs for all 12 stages and includes an asynchronous clear input.

Feature Summary

• Provides 12 external output stages for binary counting
• Asynchronous high-level clear resets all outputs low
• Count advances on high-to-low clock transitions
• Compatible with LSTTL loads

Applications

• Time-delay circuits
• Counter controls
• Frequency-dividing circuits

Procurement Notes

Verify the obsolete status of the SN74HC4040DT before procurement. Confirm availability of active alternatives such as SN74HC4040DR or SN74HC4040DBR. Ensure design compatibility with current inventory constraints and lead times for replacement components.

Selection Notes

Select this component for applications requiring 12-stage asynchronous binary counting within standard industrial temperature limits. Verify that the 2 V to 6 V supply range meets system requirements. Consider active replacements if long-term supply stability is required.

Part Context

This part belongs to the Texas Instruments SN74HC4040 family of 12-bit asynchronous binary counters. The 'DT' suffix indicates a specific tape-and-reel packaging variant within the SOIC-16 form factor. The family shares identical logic functionality across different package options.

Replacement Considerations

SN74HC4040DR and SN74HC4040DBR are active production equivalents.