DS2480B Datasheet | Maxim Integrated

19-5047; 4/15 Serial to 1-Wire Line Driver BENEFITS AND Features - Simplifies the Design of a Low-Cost, Universal RS-232 Port to 1-Wire® Interface True-Ground o Interface to an RS-232 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 Acmodate Long Lines and Reduce Radiation o municates 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 munication o User-Selectable RXD/TXD Polarity Minimizes ponent Count When Interfacing to 5V Based RS232 Systems or Directly to UARTs o Smart Protocol bines Data and Control Information Without Requiring Extra Pins o patible with Optical, IR, and RF to RS232 Converters - Single Product Supports Various i Button® or 1-Wire Device Types for Easy System Integration o Supports Reading and Writing at Standard and Overdrive Speeds o Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices o Programs 1-Wire EPROM Devices with External 12V Power Supply o Programmable 1-Wire Timing and Driver Characteristics Acmodate a Wide Range of Slave Device Configurations at Standard Speed o Operates Over 4.5V to 5.5V from -40°C to +85°C PIN ASSIGNMENT 8 RXD 1-W 2 NC 3 7 TXD 6 POL 5 VPP 8-Pin SO (150 mil) PIN DESCRIPTION - Ground 1-W - 1-Wire Input/Output - No Connection - 4.5V to 5.5V - Optional EPROM Programming Voltage - RXD/TXD Polarity Select - Serial Data from UART - 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...