SN74F521N

Overview

The SN74F521N is an octal buffer and line driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features high-speed CMOS technology, ensuring low power consumption while maintaining fast switching speeds. It includes three-state outputs that allow multiple drivers to share a bus without interference. The package type is a standard 20-pin DIP.

Feature Summary

• Octal buffer and line driver configuration
• Three-state output capability for bus sharing
• High-speed CMOS technology implementation

Applications

• Bus-oriented systems
• Memory mapping
• Clock distribution circuits

Procurement Notes

Verify the specific suffix 'N' indicates the plastic dual in-line package (PDIP) variant when ordering. Confirm the manufacturer is Texas Instruments or an authorized licensee. Check for RoHS compliance status if required for your assembly process. Ensure the operating temperature range meets your environmental specifications before finalizing procurement.

Selection Notes

Select this component when an octal buffer with tri-state control is required for digital logic applications. It is suitable for designs needing high-speed signal transmission with minimal power dissipation. Consider the PDIP package constraints regarding pin count and board space compared to surface-mount alternatives.

Part Context

This part belongs to the SN74F series of high-speed CMOS logic devices. It serves as a fundamental building block for digital systems requiring signal buffering and isolation. The F series offers a balance between speed and power consumption, making it widely used in general-purpose digital electronics.

Replacement Considerations

Compatible substitutes include the SN74LS521N for lower speed requirements or the SN74FCT521T for advanced FCT technology. Verify pin compatibility and electrical characteristics before substitution. Ensure the replacement supports the same 3-state functionality and voltage levels.