SN74143N

Overview

The SN74143N is a high-speed CMOS octal binary-to-decimal decoder manufactured by Texas Instruments. It converts an 8-line binary input into one of ten active-low decimal outputs. The device operates within a supply voltage range of 2V to 6V and supports through-hole mounting in a standard DIP-16 package. It features low power consumption and is designed for general-purpose digital decoding applications requiring reliable signal translation.

Feature Summary

• Converts eight binary input lines into ten distinct active-low decimal output signals
• Operates with a wide supply voltage range supporting both 2V and 5V logic systems
• Utilizes high-speed CMOS technology for low static power dissipation

Applications

• Digital display driver circuits
• Memory address decoding
• Control logic sequencing

Procurement Notes

Verify the specific manufacturer source and lot code upon receipt, as legacy components may vary by production batch. Confirm the physical package integrity matches the specified DIP-16 form factor. Ensure storage conditions comply with moisture sensitivity levels for leaded packages to prevent soldering defects during assembly.

Selection Notes

Select this component when an octal binary-to-decimal conversion function is required in a through-hole design. The SN74143N is suitable for applications needing active-low outputs and wide voltage tolerance. Consider pin compatibility if replacing older TTL equivalents in existing PCB layouts.

Part Context

This part belongs to the SN74xx series of logic integrated circuits, widely used in industrial and consumer electronics. The 'N' suffix denotes the plastic dual-in-line package variant. It serves as a foundational building block for sequential logic systems requiring simple address or command decoding.

Replacement Considerations

Compatible substitutes include the SN74LS143N for TTL-compatible designs and the SN74HC143N for higher speed CMOS requirements. Verify pinout consistency before substitution to ensure direct replacement without circuit modification.