8500301EA

Counter Dividers Overview

The SNJ54HC4020J is a military-grade, 14-stage asynchronous binary ripple-carry counter manufactured by Texas Instruments. It advances on the negative-going edge of the clock pulse and resets to zero when the clear input goes high. The device operates within a supply voltage range of 2 V to 6 V and supports an operating temperature range from -55°C to +125°C. It features low power consumption with a maximum ICC of 80 µA and typical propagation delay of 12 ns. Outputs can drive up to 10 LSTTL loads with ±4 mA drive capability at 5 V.

Counter Dividers Feature Summary

• 14-stage asynchronous binary counting functionality
• Military-grade reliability for extended temperature environments
• Low power consumption design
• High noise immunity CMOS technology

Counter Dividers Applications

• Military and defense electronic systems
• Spacecraft instrumentation counters
• Aviation navigation system timing
• Ruggedized industrial control applications

Counter Dividers Procurement Notes

Verify that the specific part number SNJ54HC4020J corresponds to the military-grade SN54HC4020 variant rather than the commercial SN74HC4020 series. Confirm the package type is CDIP (J) as indicated by the ordering suffix. Ensure procurement channels provide documentation verifying QML certification or military qualification status if required for your specific application standards.

Counter Dividers Selection Notes

Select this component when a 14-bit asynchronous counter is required for harsh environments. The SNJ prefix indicates military qualification compared to the standard SN54 or SN74 prefixes. Consider the CDIP package for through-hole mounting in ruggedized assemblies. Verify that the 2 V to 6 V supply range aligns with your system's power architecture.

Counter Dividers Part Context

This component belongs to the HC4020 family of 14-bit binary counters. The 'SNJ' designation specifically identifies it as a military-qualified version produced under strict quality controls. It is distinct from the commercial SN74HC4020 which has a narrower temperature range. The device utilizes standard CMOS logic levels compatible with LSTTL loads.

Counter Dividers Replacement Considerations

SN54HC4020J

Counter Dividers FAQ

What is the difference between SNJ54HC4020J and SN74HC4020?

The SNJ54HC4020J is a military-qualified device with an extended temperature range of -55°C to +125°C, whereas the SN74HC4020 is a commercial grade device with a limited range of -40°C to +85°C.

How does the reset function operate?

The counter resets to zero (all outputs low) independently of the clock input when the clear (CLR) input goes high.