DS2482-800
PRODUCTION8-Channel 1-Wire Master
I²C to 1-Wire Bridge Device that Interfaces Directly to Standard (100kHz max) or Fast (400kHz max) I²C Masters to Perform Bidirectional Protocol Conversion Between the I²C Master and Any Downstream 1-Wire Slave Devices
- Part Models
- 2
- 1ku List Price
- Starting From $5.70
Part Details
- Allows Easy Interface Between an I2C Micro Port and a 1-Wire Slave
- I2C Host Interface Supports 100kHz and 400kHz I2C Communication Speeds
- 8 Channels of Independently Operated 1-Wire I/O
- 1-Wire Master I/O with Selectable Active or Passive 1-Wire Pullup
- Provides Reset/Presence, 8-Bit, Single-Bit, and 3-Bit 1-Wire I/O Sequences
- Standard and Overdrive 1-Wire Communication Speeds 2
- Three Address Inputs for I2C Address Assignment
- Minimizes Line Noise, Reducing System EMI
- Slew-Controlled 1-Wire Edges
- Supports EEPROMs, Temp Sensors, or Other 1-Wire Slaves That Have Momentary High Source Current Modes
- Strong 1-Wire Pullup Provided by an Internal Low-Impedance Signal Path
- Wide Operating Range: 2.9V to 5.5V, -40°C to +85°C
- 16-Pin SO Package (150 mils)
The DS2482-800 is an I²C to 1-Wire® bridge device that interfaces directly to standard (100kHz max) or fast (400kHz max) I²C masters to perform bi-directional protocol conversion between the I²C master and any downstream 1-Wire slave devices. Relative to any attached 1-Wire slave device, the DS2482-800 is a 1-Wire master. Internal factory-trimmed timers relieve the system host processor from generating time-critical 1-Wire waveforms, supporting both standard and Overdrive 1-Wire communication speeds. To optimize 1-Wire waveform generation, the DS2482-800 performs slew-rate control on rising and falling 1-Wire edges and has a programmable feature to mask the fast presence pulse edge that some 1-Wire slave devices can generate. Programmable strong pullup features support 1-Wire power delivery to 1-Wire devices such as EEPROMs and sensors. The DS2482-800 combines these features with eight independent 1-Wire I/O channels. The I²C slave address assignment is controlled by three binary address inputs, resolving potential conflicts with other I²C slave devices in the system.
Applications
- Central Office Switches
- Medical Clinical Diagnostic Equipment
- PBXs
- Rack-Based Servers
- Wireless Base Stations
Documentation
Data Sheet 1
Reliability Data 1
Application Note 1
Design Note 1
Technical Articles 3
3rd Party Solutions 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
---|---|---|---|
DS2482S-800+ | Small-Outline IC, Narrow (0.15in) | ||
DS2482S-800+T&R | Small-Outline IC, Narrow (0.15in) |
This is the most up-to-date revision of the Data Sheet.
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