SN74HC21NG4

Inverter Gates Overview

The SN74HC21NG4 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 supports an operating temperature range from -40°C to +85°C. The device features low static power consumption typical of CMOS technology and provides balanced output drive currents of 5.2 mA at both high and low logic states. Propagation delay is specified at 11 ns under standard test conditions. It is housed in a 14-pin DIP package.

Inverter Gates Feature Summary

• Dual four-input AND logic functionality
• Wide supply voltage operation
• Low static power consumption
• Balanced output drive capability

Inverter Gates Applications

• Digital logic circuits
• Microcontroller input conditioning
• Signal gating applications

Inverter Gates Procurement Notes

Verify the specific suffix 'NG4' against official Texas Instruments documentation to confirm pinout, package dimensions, and RoHS compliance status. Ensure the component matches the required DIP-14 form factor for your PCB design. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current production status.

Inverter Gates Selection Notes

Select this component when dual four-input AND logic is required in a through-hole DIP package. It is suitable for designs needing wide voltage tolerance and low standby power. Verify that the propagation delay meets system timing requirements. Consider alternative packages if surface-mount assembly is preferred.

Inverter Gates Part Context

This component belongs to the SN74HC series of high-speed CMOS logic devices. The HC series offers performance comparable to LS-TTL but with lower power consumption and wider voltage ranges. The SN74HC21 specifically provides two independent four-input AND gates in a single package.

Inverter Gates Replacement Considerations

Compatible replacements include SN74HC21N and SN74HC21D. Verify pin compatibility and electrical specifications before substitution.