DS2401A+T&R

Specialized ICS Overview

The DS2401A+T&R is a silicon serial number integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It provides a guaranteed unique 64-bit ROM ID for absolute traceability, comprising an 8-bit family code (01h), a 48-bit serial number, and an 8-bit CRC tester. The device utilizes a minimalist 1-Wire interface requiring only a single data lead and ground return, communicating at speeds up to 16.3kbps. It operates within a voltage range of 3V to 5.25V and supports an industrial temperature range from -40°C to +85°C. Packaged in a TO-92-3 form factor with formed leads on a tape and reel, it draws a maximum input load current of 5µA.

Specialized ICS Feature Summary

• Guaranteed Unique 64-Bit ROM ID: Includes 8-bit Family Code, 48-bit Serial Number, and 8-bit CRC.
• Minimalist 1-Wire Interface: Requires only one data pin and ground; supports multidrop networks.
• Power via Data Line: Derives power from the data line itself without external power sources.
• Industrial Grade Operation: Functions reliably between -40°C and +85°C with a supply voltage of 3V to 5.25V.

Specialized ICS Applications

• PCB Identification
• Network Node ID
• Equipment Registration

Specialized ICS Procurement Notes

Verify that the specific ordering suffix corresponds to the required lead configuration. The 'T&R' designation indicates Tape and Reel packaging with formed leads. Confirm compatibility with the host controller's pullup resistor requirements, as the DS2401A specifies a recommended range of 300Ω to 2.2kΩ for optimal signal integrity.

Specialized ICS Selection Notes

Select the DS2401A over the standard DS2401 when operating within the 3V to 5.25V voltage range. Ensure the application requires the specific electrical characteristics of the A variant, particularly regarding pullup resistance values. Verify that the TO-92 package with formed leads meets the mechanical constraints of the target PCB assembly process.

Specialized ICS Part Context

The DS2401A is an enhanced version of the DS2400, offering full reverse compatibility while adding multi-drop capability. It belongs to the DS2401 series of security and authentication ICs. The component serves as a peripheral on the 1-Wire bus system, providing a low-cost electronic registration number accessible via a microcontroller port.

Specialized ICS Replacement Considerations

The DS2401+T&R is a direct functional substitute if the voltage range and pullup resistor specifications align with the system design. Other packages in the DS2401 family, such as TSOC or SOT-223 variants, may be used if mechanical footprint changes are permissible.