SN74HC4020N

Counter Dividers Overview

The SN74HC4020N is a 14-bit asynchronous binary counter in a 16-pin PDIP package. It operates on the negative-going edge of the clock pulse and resets to zero when the clear input goes high. Recommended operating conditions specify a supply voltage range of 2 V to 6 V and an operating temperature range of -40°C to 85°C. The device features low power consumption with a maximum ICC of 80 µA at 6 V, typical propagation delay of 12 ns, and outputs capable of driving up to 10 LSTTL loads.

Counter Dividers Feature Summary

• 14-stage binary ripple-carry counting functionality
• Asynchronous reset capability independent of the clock input
• CMOS logic compatibility with standard TTL load drive

Counter Dividers Applications

• Digital frequency division circuits
• Time-base generation for digital clocks
• Event counting in measurement systems

Counter Dividers Procurement Notes

Verify the specific ordering suffix 'N' corresponds to the 16-lead Plastic Dual In-Line Package (PDIP). Confirm the catalog status indicates active production rather than NRND or obsolete classifications. Ensure the component meets RoHS requirements if applicable to the assembly process. Cross-reference the manufacturer part number against official distributor databases to validate authenticity before procurement.

Counter Dividers Selection Notes

Select this component for designs requiring a 14-bit count capacity within a through-hole form factor. Verify that the system voltage remains within the 2 V to 6 V operational window. Consider the asynchronous nature of the reset function when designing control logic. Evaluate thermal constraints based on the specified junction-to-ambient resistance for the PDIP package.

Counter Dividers Part Context

This device belongs to the Texas Instruments SNx4HC4020 family of 14-bit asynchronous binary counters. It shares functional characteristics with other members of the HC series but differs in packaging options such as SOIC, TSSOP, and CDIP. The SN prefix denotes commercial grade specifications, distinguishing it from the military-grade SN54 variant which supports extended temperature ranges.

Counter Dividers Replacement Considerations

SN74HC4020DR

Counter Dividers FAQ

How does the reset function operate relative to the clock signal?

The counter resets to zero asynchronously; all outputs go low immediately when the clear input goes high, regardless of the clock state.

What determines the maximum clock frequency for this device?

The maximum clock frequency depends on the supply voltage, ranging from approximately 3.7 MHz at 2 V to 22 MHz at 6 V under recommended operating conditions.