DS2401X1

Specialized ICS Overview

The DS2401X1 is a silicon serial number integrated circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for absolute traceability. It features a guaranteed unique 64-bit ROM ID 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 pin and ground return, supporting communication speeds up to 16.3kbps. It operates within a voltage range of 2.8V to 6.0V and an industrial temperature range of -40°C to +85°C. The component is housed in a compact 2-FlipChip (2-UFBGA) package with dimensions of 1.32x0.66mm.

Specialized ICS Feature Summary

• Guaranteed Unique 64-Bit ROM ID: Includes 8-bit Family Code, 48-bit Serial Number, and 8-bit CRC for absolute traceability.
• Minimalist 1-Wire Interface: Reduces control, address, data, and power requirements to a single pin.
• Low Power Operation: Zero standby power required; parasitic power derived from the data line.
• Industrial Grade Reliability: Operates reliably across -40°C to +85°C temperature range.

Specialized ICS Applications

• PCB Identification
• Network Node ID
• Equipment Registration

Specialized ICS Procurement Notes

Verify the specific ordering suffix 'S#T' indicates RoHS compliance and tape-and-reel packaging containing 2.5k pieces. Confirm that the Flip Chip package requires appropriate surface mount assembly equipment. Ensure the host system supports the 1-Wire protocol timing constraints, specifically the reset pulse duration and presence pulse detection windows defined in the electrical characteristics.

Specialized ICS Selection Notes

Select the DS2401X1 when a surface-mount footprint is required for space-constrained designs compared to through-hole TO-92 packages. The 2-FlipChip package offers a significantly smaller profile than SOT-223 or TSOC variants. Verify compatibility with the 1-Wire bus pullup resistor values, which should be approximately 5kΩ for standard operation. Consider custom serial number assignment if specific manufacturer identification bits are needed for the 48-bit field.

Specialized ICS Part Context

The DS2401 serves as an enhanced silicon serial number upgrade to the legacy DS2400, providing full reverse-compatibility while adding multi-drop capability for multiple devices on a single bus. The X1 variant specifically denotes the Flip Chip package option, distinct from the TO-92, TSOC, or WLP packages available in the series. It functions strictly as a peripheral device within the 1-Wire network architecture.

Specialized ICS Replacement Considerations

The DS2400 is functionally compatible but lacks multi-drop support and does not respond to the standard Read ROM command (33h). Other 1-Wire security ICs such as the DS1990 or DS2431 offer different memory architectures and must be evaluated for protocol compatibility and pinout differences before substitution.