Guaranteed Unique 64-Bit ROM ID Chip for Absolute Traceability
Unique, 64-Bit Registration Number (8-BitFamily Code + 48-Bit Serial Number +8-Bit CRC Tester)
8-Bit Family Code Specifies DS2401 Communications Requirements to Reader
Minimalist 1-Wire® Interface Lowers Cost and Interface Complexity
Multiple DS2401 Devices Can Reside on a Common 1-Wire Net
Built-In Multidrop Controller Ensures Compatibility with Other 1-Wire Net Products
Reduces Control, Address, Data, and Power to a Single Pin and Communicates at Up to 16.3kbps
Presence Pulse Acknowledges When the Reader First Applies Voltage
Low-Cost TO-92, SOT-223, and TSOC Surface-Mount Packages
TO-92 Tape-and-Reel Version with Leads Bent to 100-mil Spacing (Default) or with Straight Leads (DS2401-SL)
Wide Voltage and Temperature Operating Ranges Enables Robust System Performance
Extended 2.8V to 6.0V Range
Zero Standby Power Required
-40°C to +85°C Industrial Temperature Range
DS2401 Applications
Equipment Registration
Network-Node Identification
PCB Identification
Reference Design License Management
DS2401 Description
The DS2401 enhanced Silicon Serial Number is a low-cost, electronic registration number that provides an absolutely unique identity which can be determined with a minimal electronic interface (typically, a single port pin of a microcontroller). The DS2401 consists of a 64-bit ROM that includes a unique 48-bit serial number, an 8-bit CRC, and an 8-bit Family Code (01h). Data is transferred serially via the 1-Wire® protocol that requires only a single data lead and a ground return. Power for reading and writing the device is derived from the data line itself with no need for an external power source. The DS2401 is an upgrade to the DS2400. The DS2401 is fully reverse-compatible with the DS2400 but provides the additional multi-drop capability that enables many devices to reside on a single data line. The familiar TO-92, SOT-223 or TSOC package provides a compact enclosure that allows standard assembly equipment to handle the device easily.
