SN74F21DRE4

Overview

The SN74F21DRE4 is a quad 2-input AND gate integrated circuit manufactured by Texas Instruments. It belongs to the SN74F logic family, utilizing standard bipolar technology for high-speed performance. The device operates within a supply voltage range of 4.5V to 5.5V and features four independent AND gates in a single package. It is housed in a 14-pin Small Outline Integrated Circuit (SOIC) package with a narrow body width of 3.90mm. The component supports surface-mount installation and is designed for commercial temperature ranges.

Feature Summary

• Provides four independent 2-input AND logic functions within a single package
• Utilizes standard bipolar technology for high-speed switching capabilities
• Features a 14-pin SOIC narrow package suitable for surface-mount applications

Applications

• Digital logic circuits requiring multiple AND operations
• Data masking and selection systems
• Control logic interfaces in embedded systems

Procurement Notes

Verify the presence of the E4 suffix to confirm lead-free composition and compliance with RoHS directives. Ensure the ordering part number matches the specific package variant required for the PCB footprint. Confirm that the design supports the 4.5V to 5.5V operating voltage range typical of the SN74F series before finalizing procurement specifications.

Selection Notes

Select this component when high-speed logic performance is required compared to standard 74LS series devices. The SN74F21 offers faster propagation delays suitable for timing-critical applications. Consider the 14-pin SOIC package constraints and ensure adequate thermal management for the power dissipation characteristics inherent to bipolar logic families during operation.

Part Context

This component is part of the broader SN74F series of high-speed logic ICs from Texas Instruments. The 'E4' suffix indicates a lead-free finish compliant with environmental standards. It serves as a functional equivalent to other quad 2-input AND gates within the industry-standard 74xx logic families, providing compatibility with existing digital designs while offering improved speed characteristics.

Replacement Considerations

The SN74F21D is a documented parameter-equivalent alternative available from Texas Instruments. Verify pinout compatibility and electrical specifications before substitution. Other manufacturers may offer cross-references, but direct TI equivalents ensure consistent performance parameters.