SN74HC21APWR

Inverter Gates Overview

The SN74HC21APWR is a dual four-input positive-AND gate manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features low static power consumption typical of CMOS technology. The device supports an operating temperature range from -40°C to +85°C and is housed in a 14-pin TSSOP package. Key electrical characteristics include a maximum propagation delay of 32 ns at 6 V with a 50 pF load, and output drive currents of ±5.2 mA. It complies with RoHS standards and has a moisture sensitivity level of 1.

Inverter Gates Feature Summary

• Dual independent four-input AND logic functions integrated into a single compact package
• CMOS construction providing high noise immunity and low static power dissipation
• Wide operational supply voltage capability supporting 2 V to 6 V ranges
• Industrial temperature rating ensuring reliable performance across extended thermal environments

Inverter Gates Applications

• Digital logic control circuits requiring multi-input decision making
• Data acquisition systems for signal gating and masking operations
• Microprocessor interface logic for address decoding and enable signals
• General-purpose digital signal processing applications

Inverter Gates Procurement Notes

Verify the specific suffix 'A' against the official Texas Instruments datasheet to confirm it denotes the standard industrial grade variant (-40°C to +85°C) rather than a specialized automotive or military qualification. Ensure the ordering part number matches the exact package style and tape/reel specifications required for your assembly process. Cross-reference the manufacturer's latest release notes for any pinout or electrical parameter updates.

Inverter Gates Selection Notes

Select this component when dual four-input AND functionality is required in a space-constrained surface-mount design. The HC series offers a balance of speed and power efficiency suitable for general-purpose digital applications. Consider the 14-pin TSSOP footprint for PCB layout compatibility. Verify that the input voltage levels are compatible with the driving logic family to ensure proper logic threshold interpretation.

Inverter Gates Part Context

This device belongs to the Texas Instruments SN74HCxx high-speed CMOS logic family. The family is designed for low-power operation while maintaining switching speeds comparable to older TTL standards. The SN74HC21 specifically provides two independent AND gates, offering a cost-effective solution for complex logic implementations without requiring multiple discrete components.

Inverter Gates Replacement Considerations

Compatible replacements include the SN74HC21PWR and SN74HC21DR, which share identical logical functions and pinouts. Verify that alternative manufacturers offer equivalent electrical characteristics and package dimensions to ensure direct interchangeability without circuit redesign.