MC74HC4020ADG

Counter Dividers Overview

The MC74HC4020ADG is a 14-stage binary ripple counter manufactured by onsemi in a 16-lead SOIC package. It operates within a DC supply voltage range of 2.0 V to 6.0 V and supports an operating temperature range from -55°C to +125°C. The device features asynchronous active-high reset functionality and negative-edge triggering clock inputs. Maximum clock frequency reaches 50 MHz at 6.0 V, with propagation delays varying between 25 ns and 96 ns depending on voltage and temperature conditions.

Counter Dividers Feature Summary

• Contains 14 master-slave flip-flops with 12 stages brought out to pins for binary counting applications
• Outputs directly interface to CMOS, NMOS, and TTL logic families
• Provides high noise immunity characteristic of high-performance silicon-gate CMOS technology
• Includes asynchronous active-high reset that forces all Q outputs low

Counter Dividers Applications

• Time-base generator circuits
• Frequency division networks
• Binary counting systems

Counter Dividers Procurement Notes

Verify the specific suffix 'D' corresponds to the SOIC-16 package type as defined in the datasheet ordering information. Confirm RoHS compliance and lead-free status requirements match project specifications. Ensure the component meets AEC-Q100 qualification standards if automotive application is intended, noting that standard parts may differ from NLV prefix variants.

Counter Dividers Selection Notes

Select this component when a 14-bit binary counter is required with direct CMOS or TTL interfacing capabilities. Consider the asynchronous reset feature for immediate state clearing needs. Evaluate the maximum clock frequency limits against system timing requirements across the full operating temperature range. Verify power supply voltage compatibility within the specified 2.0 V to 6.0 V operational window.

Counter Dividers Part Context

This device belongs to the 74HC series of high-speed CMOS logic devices. It is functionally identical in pinout to the standard CMOS MC14020B but offers improved switching speeds and lower power consumption typical of the HC family. The component is part of onsemi's extensive portfolio of digital logic integrated circuits designed for general-purpose computing and control applications.

Counter Dividers Replacement Considerations

MC74HC4020ADR2G

Counter Dividers FAQ

How does the reset function operate?

The reset is asynchronous and active-high. Applying a high level to the Reset input asynchronously resets the counter to its zero state, forcing all Q outputs low regardless of the clock signal.

What causes decoding spikes in output signals?

State changes of the Q outputs do not occur simultaneously due to internal ripple delays inherent in the ripple counter architecture. This sequential propagation can result in decoding spikes that may require gating with the clock signal in sensitive designs.