DS2480B+T&R by Analog Devices

Serial to 1-Wire Line Driver


The DS2480B is a serial port to 1-Wire® interface chip that supports standard and overdrive speeds. It connects directly to UARTs and 5V RS-232 systems. Interfacing to RS-232C (±12V levels) requires a passive clamping circuit and one 5V to ±12V level translator. Internal timers relieve the host of the burden of generating the time-critical 1-Wire communication waveforms. In contrast to the DS9097(E) where a full character must be sent by the host for each 1-Wire time slot, the DS2480B can translate each character into eight 1-Wire time slots, thereby increasing the data throughput significantly. In addition, the DS2480B can be set to communicate at four different data rates, including 115.2kbps, 57.6kbps, and 19.2kbps, with 9.6kbps being the power-on default. Command codes received from the host's crystal controlled UART serve as a reference to continuously calibrate the on-chip timing generator. The DS2480B uses a unique protocol that merges data and control information without requiring control pins. This approach maintains compatibility to off-the-shelf serial to wireless converters, allowing easy realization of 1-Wire media jumpers. The various control functions of the DS2480B are optimized for 1-Wire networks and support the special needs of all current 1-Wire devices including EPROM-based add-only memories, EEPROM devices, and 1-Wire thermometers. See Application Note 192: Using the DS2480B Serial 1-Wire Driver for detailed software examples.

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Prices starting from US$3.00

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Features

Simplifies the Design of a Low-Cost, Universal RS-232 COM Port to 1-Wire® Interface True-Ground Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices Works with Bipolar as well as Unipolar Logic Signals Slew Rate Controlled 1-Wire Pulldown and Active Pullup to Accommodate Long Lines and Reduce Radiation Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps Self-Calibrating Time Base with ±5% Tolerance for Serial and 1-Wire Communication User-Selectable RXD/TXD Polarity Minimizes Component Count When Interfacing to 5V Based RS232 Systems or Directly to UARTs Smart Protocol Combines Data and Control Information Without Requiring Extra Pins Compatible with Optical, IR, and RF to RS232 Converters
Interface to an RS-232 COM Port for Reading and Writing 1-Wire Devices
Works with Bipolar as well as Unipolar Logic Signals
Slew Rate Controlled 1-Wire Pulldown and Active Pullup to Accommodate Long Lines and Reduce Radiation
Communicates at Data Rates of 9.6kbps (default), 19.2kbps, 57.6kbps, and 115.2kbps
Self-Calibrating Time Base with ±5% Tolerance for Serial and 1-Wire Communication
User-Selectable RXD/TXD Polarity Minimizes Component Count When Interfacing to 5V Based RS232 Systems or Directly to UARTs
Smart Protocol Combines Data and Control Information Without Requiring Extra Pins
Compatible with Optical, IR, and RF to RS232 Converters
Single Product Supports Various iButton® or 1-Wire Device Types for Easy System Integration Supports Reading and Writing at Standard and Overdrive Speeds Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices Programs 1-Wire EPROM Devices with External 12V Power Supply Programmable 1-WireTiming and Driver Characteristics Accommodate a Wide Range of Slave Device Configurations at Standard Speed Operates Over 4.5V to 5.5V from -40°C to +85°C
Supports Reading and Writing at Standard and Overdrive Speeds
Provides Strong Pullup to 5V for Temperature and EEPROM 1-Wire Devices
Programs 1-Wire EPROM Devices with External 12V Power Supply
Programmable 1-WireTiming and Driver Characteristics Accommodate a Wide Range of Slave Device Configurations at Standard Speed
Operates Over 4.5V to 5.5V from -40°C to +85°C

Specifications

Functions 1-Wire Bridge
VSUPPLY (V) 4.5 to 5.5
Package/Pins SOIC (N)/8
Oper. Temp. (°C) -40 to +85
BudgetaryPrice (See Notes) 3.18


DS2480B+T&R Semiconductors - ICs by Analog Devices

LINE DRIVER 1TX 15V/US 5.5V NSOIC-8

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Device Type Line Driver
IC Interface Type Serial
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Driver Case Style NSOIC
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

LINE DRIVER, 1TX, 15V/US, 5.5V, NSOIC-8 | element14
Serial to 1-Wire Line Driver | Analog Devices
Line Driver, 1Tx, 15V/Us, 5.5V, Nsoic-8 | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS2480B+T&R ?

Additional datasheets, footprints and schematics for DS2480B+T&R are listed on our Part Details page. You can also find images and similar parts to DS2480B+T&R on this page.

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Is the DS2480B+T&R RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS2480B+T&R have stock available?

Authorised distributors including element14, Farnell, Chip One Stop, Analog Devices and Newark Electronics have stock available or on a lead time for DS2480B+T&R .

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