74HCT4040DB,118

Counter Dividers Overview

The 74HCT4040DB,118 is a 12-stage binary ripple counter manufactured by Nexperia. It features a clock input (CP), an overriding asynchronous master reset input (MR), and twelve parallel outputs (Q0 to Q11). The device advances on the HIGH-to-LOW transition of CP. A HIGH signal on MR clears all counter stages and forces outputs LOW. It operates within a supply voltage range of 4.5 V to 5.5 V for the HCT variant. The component utilizes static toggle flip-flops and includes clamp diodes on inputs.

Counter Dividers Feature Summary

• Features an overriding asynchronous master reset input that clears all counter stages independent of the clock state.
• Incorporates static toggle flip-flops for each counting stage.
• Includes input clamp diodes enabling current limiting resistor usage for interfacing with voltages exceeding VCC.

Counter Dividers Applications

• Frequency dividing circuits
• Time delay circuits
• Control counters

Counter Dividers Procurement Notes

Verify the specific ordering suffix

Counter Dividers Selection Notes

Select this component when a 12-bit binary count is required in digital logic designs. Ensure the design accommodates the propagation delays inherent in ripple counters rather than synchronous architectures. Verify that the system power supply aligns with the recommended operating conditions for the HCT logic family.

Counter Dividers Part Context

This part belongs to the 74HC/HCT4040 series of 12-stage binary ripple counters produced by Nexperia. The 'HCT' designation indicates compatibility with TTL logic levels while maintaining CMOS performance characteristics. The 'DB' suffix denotes the SO16 plastic small outline package format.

Counter Dividers Replacement Considerations

The datasheet revision history confirms that the type number 74HCT4040DB was removed from the product specification in version 6. Consequently, no direct replacement part numbers are listed in the official documentation for this specific package configuration.