DS2480B - Maxim Integrated Products

DS2480B Serial 1-Wire Line Driver

GND - Ground 1-W - 1-Wire Input/Output NC - No Connection VDD - 4.5V to 5.5V VPP - Optional EPROM Programming Voltage POL - RXD/TXD Polarity Select TXD - Serial Data from UART RXD - Serial Data to UART ORDERING INFORMATION PART DS2480B+ TEMP PIN- RANGE PACKAGE -40°C to +85°C 8 SO DS2480B+T&R -40°C to +85°C 8 SO + Denotes a lead(Pb)-free/R.

Features

• Simplifies the Design of a Low-Cost, Universal RS-232 COM Port to 1-Wire® Interface True-Ground o Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices o Works with Bipolar as well as Unipolar Logic Signals o Slew Rate Controlled 1-Wire Pulldown and Active Pullup to Accommodate Long Lines and Reduce Radiation o Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps o Self-Calibrating Time Base with ±5% Tolerance for Serial and 1-Wire Communication o User-Selectable RXD/TXD Polarity Minimizes Component Count When Interfacing to 5V Based RS232 Syste.