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DS2480B

Maxim Integrated Products
Part Number DS2480B
Manufacturer Maxim Integrated Products
Description Serial 1-Wire Line Driver
Published Mar 30, 2005
Detailed Description 19-5047; 4/15 DS2480B Serial to 1-Wire Line Driver BENEFITS AND FEATURES • Simplifies the Design of a Low-Cost, Univers...
Datasheet PDF File DS2480B PDF File

DS2480B
DS2480B

Overview
19-5047; 4/15 DS2480B Serial to 1-Wire Line Driver BENEFITS AND 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 Systems or Directly to UARTs o Smart Protocol Combines Data and Control Information Without Requiring Extra Pins o Compatible with Optical, IR, and RF to RS232 Converters • Single Product Supports Various iButton® 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 Accommodate 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 GND 1 8 RXD 1-W 2 NC 3 7 TXD 6 POL VDD 4 5 VPP 8-Pin SO (150 mil) PIN DESCRIPTION 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/RoHS-compliant package.
T&R = Tape and reel.
1-Wire and iButton are registered trademarks of Maxim Integrated Products, Inc.
DESCRIPTION The DS2480B is a serial port to 1-Wire interface chip that supports standard and ...


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