MC74HC4020ADTR2G

Counter Dividers Overview

The MC74HC4020ADTR2G is a high-performance silicon-gate CMOS 14-stage binary ripple counter manufactured by onsemi. It features 14 master-slave flip-flops with 12 stages brought out to pins, operating within a supply voltage range of 2.0 V to 6.0 V. The device supports a maximum clock frequency of 50 MHz at 6.0 V and includes an asynchronous active-high reset input. Packaged in a 16-lead TSSOP (DT suffix), it offers low input current and high noise immunity, compatible with standard CMOS outputs and LSTTL loads when pull-up resistors are used.

Counter Dividers Feature Summary

• Contains 14 master-slave flip-flops with 12 output stages for binary counting
• Features asynchronous active-high reset functionality to force all outputs low
• Provides negative-edge triggering clock input for state advancement
• Outputs directly interface to CMOS, NMOS, and TTL logic families

Counter Dividers Applications

• Time-base generator circuits requiring precise frequency division
• Digital counters utilizing binary ripple architecture
• Frequency divider applications where decoded signals are gated with the clock

Counter Dividers Procurement Notes

Verify the specific package suffix 'DT' corresponds to the 16-TSSOP configuration required for your PCB layout. Confirm that the ordering prefix matches the standard commercial grade, as prefixes like 'NLV' or suffixes '-Q' indicate automotive qualification and unique site control requirements. Ensure compatibility with the specified 2.0 V to 6.0 V operating range for your target application voltage.

Counter Dividers Selection Notes

Select this component when a 14-bit binary count is needed with direct access to intermediate stages. The HC series ensures compatibility with standard CMOS logic levels across a wide voltage range. Consider the internal ripple delay characteristics; if simultaneous output switching is critical, alternative synchronous counters may be more suitable than this ripple architecture.

Counter Dividers Part Context

This part belongs to the MC74HC4020A family of high-performance silicon-gate CMOS devices. It shares pinout compatibility with the standard CMOS MC14020B. The device is designed for general-purpose digital counting applications, offering robust performance with low power consumption and high noise immunity typical of modern CMOS technology.

Counter Dividers Replacement Considerations

MC74HC4020ADR2G

Counter Dividers FAQ

How does the reset function operate?

The reset input is asynchronous and active-high. Applying a high level to the Reset pin forces all Q outputs low immediately, regardless of the clock state.

What causes decoding spikes in the output?

State changes of the Q outputs do not occur simultaneously due to internal ripple delays between the cascaded flip-flops. This sequential switching can generate decoding spikes on the output lines.