74HC21N,652

Overview

The 74HC21N,652 is a dual 4-input AND gate manufactured by Nexperia. It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device features clamp diodes on inputs for high-voltage interfacing. Static characteristics include HIGH-level input voltage thresholds up to 4.2 V at 6.0 V supply. Dynamic performance specifies propagation delays of 28 ns maximum at 6.0 V. Power dissipation capacitance is 15 pF.

Feature Summary

• Dual 4-input AND logic function
• CMOS low power dissipation
• High noise immunity
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level B

Applications

• Digital logic circuits requiring dual 4-input AND operations
• Signal processing systems with CMOS/TTL compatibility
• Industrial control applications operating in extended temperature ranges

Procurement Notes

Verify the specific package type required, as the datasheet lists SO14 (SOT108-1) and TSSOP14 (SOT402-1). Confirm that the ordering suffix matches the desired physical footprint. Ensure design compliance with the specified absolute maximum ratings to prevent permanent damage. Check current product status as specifications may change.

Selection Notes

Select this component for designs requiring dual 4-input AND gates in a compact form factor. Verify that the system supply voltage falls between 2.0 V and 6.0 V. Consider the propagation delay limits when designing high-speed digital paths. Ensure thermal management accounts for total power dissipation derating above 81 °C or 100 °C depending on the package.

Part Context

This part belongs to the 74HC series of high-speed CMOS logic devices. It provides standard AND functionality compatible with various digital logic families. The device is produced by Nexperia, which acquired the standard product business from NXP Semiconductors. It serves as a fundamental building block for complex combinational logic designs.

Replacement Considerations

Check for equivalent parts from other manufacturers offering the same 74HC21 logic function. Verify pinout compatibility if substituting packages like SO14 or TSSOP14. Ensure replacement components meet the same electrical specifications and temperature ranges.