DS2411X#U

Specialized ICS Overview

The DS2411X is a silicon serial number device featuring an external VCC input, enabling operation in voltage ranges below typical 1-Wire standards. It provides a unique, factory-lasered 64-bit registration number comprising an 8-bit family code (01h), a 48-bit serial number, and an 8-bit CRC tester. The component communicates via the 1-Wire protocol at up to 15.4kbps in standard mode or 125kbps in overdrive mode. Operating from 1.5V to 5.25V with standby current under 1µA, it supports multidrop networks and connects directly to a single microprocessor port pin.

Specialized ICS Feature Summary

• Unique 64-bit factory-lasered registration number guaranteed no two parts alike
• External VCC input extends operating voltage range to 1.5V–5.25V
• Built-in multidrop controller compatible with other 1-Wire products
• Overdrive mode boosts communication speed to 125kbps

Specialized ICS Applications

• Peripheral and accessory identification
• Module registration and network node identification
• PCB identification and authentication
• License management systems

Specialized ICS Procurement Notes

Verify the specific package variant required for the design, as the DS2411X designation corresponds to the 4-pin Flip-Chip package. Confirm RoHS compliance status, indicated by suffixes such as '+' or '#', if environmental regulations apply. Ensure the system design accommodates the 1200µs power-up delay between VCC stabilization and the first 1-Wire command. Check that the pullup resistor values fall within the 0.3kΩ to 2.2kΩ range to guarantee proper signal integrity.

Specialized ICS Selection Notes

Select the DS2411X when an external power supply is necessary to support voltages below 3V, distinguishing it from the DS2411A which lacks the VCC pin. Consider the Flip-Chip package constraints regarding soldering temperature limits of +240°C during reflow. Evaluate the need for overdrive mode if faster search times are critical, noting that timing parameters differ significantly between standard and overdrive speeds.

Specialized ICS Part Context

The DS2411 series belongs to the Analog Devices/Maxim Integrated 1-Wire product family, designed for low-cost electronic identity solutions. The 'X' suffix specifically denotes the 4-pin Flip-Chip surface-mount package option. This component serves as a slave device on the 1-Wire bus, providing absolute uniqueness through laser-etched ROM data accessible via a single data line.

Specialized ICS Replacement Considerations

The DS2411A is functionally equivalent but lacks the VCC input pin and operates only from 3V to 5.25V. Verify pin compatibility, as the DS2411A has different electrical characteristics and does not support the extended low-voltage range provided by the DS2411's external power supply.