DESCRIPTION

The DS2411 silicon serial number is a low-cost, electronic registration number with external power supply. It provides an absolutely unique identity that can be determined with a minimal electronic interface (typically, a single port pin of a microcontroller). The DS2411’s registration number is a factory-lasered, 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 through the Maxim 1-Wire protocol. The external power supply is required, extending the operating voltage range of the device below typical 1-Wire devices.

FEATURES

■ Unique, Factory-Lasered and Tested 64-Bit Registration Number (8-Bit Family Code Plus 48-Bit Serial Number Plus 8-Bit CRC Tester); Guaranteed No Two Parts Alike

■ Standby Current <1μA

■ Built-In Multidrop Controller Enables Multiple DS2411s to Reside on a Common 1-Wire Network

■ Multidrop Compatible with Other 1-Wire Products

■ 8-Bit Family Code Identifies Device as DS2411 to the 1-Wire Master

■ Low-Cost TSOC, SOT23-3, and Flip-Chip Surface-Mount Packages

■ Directly Connects to a Single-Port Pin of a Microprocessor and Communicates at up to 15.4kbps

■ Overdrive Mode Boosts Communication Speed to 125kbps

■ Operating Range: 1.5V to 5.25V, -40°C to +85°C