MC74AC4040NG

Counter Dividers Overview

The MC74AC4040NG is a 12-stage binary ripple counter manufactured by onsemi in the 74AC logic series. It consists of 12 master-slave flip-flops where each output frequency is half that of the preceding stage. The device advances state on the negative-going edge of the clock input and features an asynchronous active-high reset. It operates within a supply voltage range of 2.0 V to 6.0 V, supports a typical maximum clock frequency of 140 MHz, and provides outputs capable of sourcing or sinking 24 mA. The component is housed in a 16-lead PDIP package.

Counter Dividers Feature Summary

• Features a 12-stage binary ripple counter architecture with cascaded master-slave flip-flops.
• Provides high noise immunity and robust output drive capability for various loads.
• Includes an asynchronous active-high reset function to force all outputs low.

Counter Dividers Applications

• Frequency division circuits
• Digital counting applications
• Binary sequence generation

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'N' corresponds to the 16-lead PDIP package configuration. Confirm the device status as obsolete or end-of-life through official manufacturer channels before finalizing procurement plans. Ensure compatibility with existing PCB footprints designed for standard DIP-16 components.

Counter Dividers Selection Notes

Select this component when a 12-bit binary counter is required within the 74AC logic family specifications. Consider the asynchronous ripple nature of the counter regarding propagation delays if precise simultaneous decoding is necessary. Verify that the operating temperature range of -40°C to +85°C meets the environmental requirements of the target application.

Counter Dividers Part Context

This part belongs to the MC74AC4040 product line, which includes variants such as the SOIC-16 (D suffix) and SOEIAJ-16 (M suffix). All variants share identical internal logic and electrical characteristics but differ in physical packaging and shipping units. The NG designation specifically identifies the lead-free PDIP-16 version.

Counter Dividers Replacement Considerations

MC74AC4040N

Counter Dividers FAQ

How does the reset function operate?

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

What determines the output frequency at each stage?

The output of each flip-flop feeds the next stage, resulting in a frequency at each subsequent output that is exactly half that of the preceding one.