SN74LS21NE4

Inverter Gates Overview

The SN74LS21NE4 is a dual 4-input positive-AND gate manufactured by Texas Instruments. It belongs to the LS (Low-power Schottky) logic series and operates within a supply voltage range of 4.75V to 5.25V. The device features two independent AND gates, each with four inputs, housed in a 14-pin Plastic Dual In-Line Package (PDIP). It is characterized for operation over an ambient temperature range of 0°C to 70°C.

Inverter Gates Feature Summary

• Contains two independent 4-input positive-AND gates
• Utilizes Low-power Schottky (LS) technology for optimized power dissipation
• Housed in a standard 14-pin PDIP plastic package

Inverter Gates Applications

• Digital logic circuit design
• Computer systems
• Control circuits

Inverter Gates Procurement Notes

Verify that the component matches the exact part number SN74LS21NE4. Confirm the manufacturer is Texas Instruments or an authorized distributor. Ensure the package type is PDIP-14 and the operating temperature range meets the application requirements of 0°C to 70°C.

Inverter Gates Selection Notes

Select this component when a dual 4-input AND function is required in a TTL-compatible system. The LS series offers a balance of speed and low power consumption suitable for general-purpose digital applications. Verify that the 14-pin DIP footprint aligns with the PCB layout constraints.

Inverter Gates Part Context

This component is part of the SN74LS21 family, which includes variants such as SN74LS21N and SN74LS21DR. The 'E4' suffix indicates compliance with specific environmental standards, typically RoHS, while maintaining the core electrical characteristics of the standard catalog SN74LS21 device.

Inverter Gates Replacement Considerations

Direct substitutes include SN74LS21N and SN74LS21DR from Texas Instruments. Other manufacturers may offer equivalent parts under the generic 74LS21 designation, provided they meet the same LS logic specifications and pinout configuration.