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 Device
The DS2482-100 is an 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.
Relative to any attached 1-Wire slave device, the
DS2482-100 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 DS2482-100 performs slew
rate control on rising and falling 1-Wire edges and
provides additional programmable features to match
drive characteristics to the 1-Wire slave environment.
Programmable strong pullup features support 1-Wire
power delivery to 1-Wire devices such as EEPROMs
and sensors. The DS2482-100 combines these
features with an output to control an external
MOSFET for enhanced strong pullup application. The
I²C slave address assignment is controlled by two
binary address inputs, resolving potential conflicts
with other I²C slave devices in the system.
Key Features
Applications/Uses
I²C Host Interface, Supports 100kHz and 400kHz I²C Communication Speeds
1-Wire Master IO with Selectable Active or Passive 1-Wire Pullup
Provides Reset/Presence, 8-Bit, Single-Bit, and Three-Bit 1-Wire IO Sequences
Standard and Overdrive 1-Wire Communication Speeds
Slew Controlled 1-Wire Edges
Selectable 1-Wire Slave Presence-Pulse Falling Edge Masking to Control Fast Edges on the 1-Wire Line
Supports Low-Impedance 1-Wire Strong Pullup
for EEPROMs, Temp Sensors, or Other 1-Wire
Slaves That Have Momentary High Current
Modes
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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