74143N

Overview

The SN74143N is a 4-bit BCD-to-decimal decoder and driver manufactured by Rochester Electronics, LLC. It accepts Binary-Coded Decimal inputs and activates one of ten decimal outputs corresponding to the input value. The device is designed for driving indicator loads such as lamps or LEDs. It belongs to the standard 7400-series logic family and is available in a through-hole package configuration suitable for general-purpose digital decoding applications.

Feature Summary

• Performs binary-coded decimal to decimal conversion
• Provides direct drive capability for indicator loads
• Supports standard TTL logic interface levels

Applications

• Driving decimal display indicators
• Lamp driver circuits
• Digital system output decoding

Procurement Notes

Verify the manufacturer marking and date code on the component body to confirm authenticity from Rochester Electronics, LLC. Ensure the package type matches the required PCB footprint. Request the specific datasheet version to confirm pinout compatibility with existing designs. Confirm that the device meets the necessary environmental and quality standards for the intended application before finalizing procurement.

Selection Notes

Select this component when a dedicated BCD-to-decimal decoder with load-driving capability is required. It is suitable for applications needing direct interface with high-current indicators without additional transistor stages. Consider the package style and voltage requirements to ensure compatibility with the system's logic levels and power supply constraints.

Part Context

Rochester Electronics specializes in providing lifecycle support for obsolete and hard-to-find integrated circuits. The 74143N is part of their extensive portfolio of legacy logic devices, ensuring continued availability for industrial and commercial systems that rely on established 74-series components for long-term production stability.