SN74HC4020DBRE4

Overview

The SN74HC4020DBRE4 is a 14-bit asynchronous binary counter from the Texas Instruments HC logic family. 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, with a recommended operating temperature of -40°C to 85°C. It features low power consumption with a maximum ICC of 80 µA and typical propagation delay of 12 ns. The component is housed in a 16-pin SSOP package.

Feature Summary

• Provides 14-stage binary ripple-carry counting functionality advancing on negative clock edges
• Features independent asynchronous reset capability that forces all outputs low regardless of clock state
• Supports driving up to 10 LSTTL loads with low input current characteristics

Applications

• Digital frequency division circuits
• Time-base generation for timing applications
• Event counting systems

Procurement Notes

Verify the specific ordering suffix 'DBRE4' against the latest TI Package Option Addendum to confirm active production status and lead finish specifications. Ensure compatibility with the specified SSOP-16 footprint and reflow profile requirements during assembly planning.

Selection Notes

Select this component for designs requiring 14-bit binary counting within standard CMOS voltage ranges. Consider the HC series speed and drive capabilities relative to system timing constraints. Verify that the SSOP package dimensions align with available board space and thermal management strategies.

Part Context

This part belongs to the SNx4HC4020 family of 14-bit asynchronous binary counters manufactured by Texas Instruments. The HC designation indicates High-speed CMOS technology, offering faster switching speeds compared to legacy CD4000 series devices while maintaining low power consumption suitable for battery-operated applications.

Replacement Considerations

SN74HC4020DR (SOIC package)

FAQ

How does the clear function operate?

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

What determines the counting direction?

The device is an up-counter that advances to the next stage on the negative-going edge of the clock pulse.