MC74AC4040D

Counter Dividers Overview

The MC74AC4040D is a 12-stage binary ripple counter from the 74AC series. It consists of 12 master-slave flip-flops where each output frequency is half that of the preceding stage. The state advances on the negative-going edge of the clock input. It features an asynchronous active-high reset and operates within a supply voltage range of 2.0 to 6.0 V. Typical maximum clock frequency is 140 MHz, with outputs capable of sourcing or sinking 24 mA.

Counter Dividers Feature Summary

• Asynchronous active-high reset function
• Negative-edge triggered clocking mechanism
• High noise immunity design

Counter Dividers Applications

• Frequency division circuits
• Binary counting applications
• Digital timing systems

Counter Dividers Procurement Notes

Verify package suffix 'D' corresponds to SOIC-16 configuration. Confirm Pb-Free status via marking code ending in 'G'. Ensure operating conditions remain within specified voltage and temperature limits for reliable performance.

Counter Dividers Selection Notes

Select this component for designs requiring a 12-bit binary counter with high-speed operation up to 140 MHz. Suitable for through-hole or surface-mount assembly depending on package availability. Verify compatibility with system logic levels and power supply constraints.

Counter Dividers Part Context

Part of the 74AC logic family, offering higher speed than standard 74LS counterparts while maintaining CMOS low power consumption. Designed for general-purpose digital logic applications requiring reliable binary counting and frequency division capabilities.

Counter Dividers Replacement Considerations

• MC74AC4040N (PDIP-16)
• MC74AC4040M (SOEIAJ-16)

Counter Dividers FAQ

How does the reset function operate?

The reset is asynchronous and active-high. When the reset pin is high, all outputs are forced low regardless of the clock state.

What triggers the state change?

State changes occur on the negative-going edge of the clock input signal.