74HC21D,652

Overview

The 74HC21D,652 is a dual 4-input AND gate manufactured by Nexperia USA Inc. It belongs to the 74HC series of high-speed silicon-gate CMOS logic devices. The component operates within a supply voltage range of 2.0 V to 6.0 V and features two independent logic gates, each with four inputs. It utilizes a 14-pin SOIC surface-mount package. Key electrical characteristics include maximum low-level output current of 5.2 mA and maximum high-level output current of -5.2 mA. The device specifies a maximum propagation delay of 165 ns at 50 pF load capacitance. It supports an operating temperature range from -40 °C to +125 °C.

Feature Summary

• Dual 4-input AND logic functionality
• Wide supply voltage compatibility from 2.0 V to 6.0 V
• High noise immunity with clamp diode inputs
• Latch-up performance exceeding 100 mA per JESD 78 Class II

Applications

• Digital logic control circuits
• Signal gating in mixed-voltage environments
• Industrial automation systems
• Consumer electronics interface logic

Procurement Notes

Verify the specific ordering code suffix against official Nexperia documentation to ensure correct packaging and tape-and-reel specifications. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Check for any recent Product Change Notifications (PCN) regarding marking or material updates. Ensure the supplier provides traceability data consistent with automotive or industrial standards if required by your application design.

Selection Notes

Select this component when dual 4-input AND functionality is required in a compact SOIC package. It is suitable for designs needing wide voltage operation between 2 V and 6 V. Consider the 165 ns propagation delay for timing constraints. Verify input compatibility with CMOS levels. Compare against the 74HCT21 variant if TTL input levels are necessary instead of standard CMOS levels.

Part Context

This part is part of the Nexperia 74HC family, which offers high-speed CMOS logic with performance comparable to LSTTL but with lower power consumption. The 74HC21 specifically provides dual 4-input AND gates. It is widely used in general-purpose digital applications requiring reliable logic operations. The device complies with JEDEC standards for various voltage ranges, ensuring broad interoperability in modern electronic systems.

Replacement Considerations

The 74HC21DB is a documented equivalent part number from Nexperia offering identical logical function and pinout. Verify package dimensions and marking consistency before substitution. Other generic 74HC21 equivalents from different manufacturers may require verification of electrical parameters such as propagation delay and output drive strength.