DS2484R+T

Controllers Overview

The DS2484R+T is a single-channel I2C-to-1-Wire bridge device manufactured by Analog Devices Inc./Maxim Integrated. It interfaces standard or fast I2C masters to downstream 1-Wire slave devices, performing protocol conversion. The component operates within a supply voltage range of 1.71 V to 5.25 V and supports I2C communication speeds up to 400 kHz. It features user-adjustable timers for standard and overdrive 1-Wire speeds, an active pullup function, and a software-controllable sleep mode. The device is housed in a 6-pin SOT-23 package and functions across an operating temperature range of -40°C to +85°C.

Controllers Feature Summary

• I2C Host Interface Supports 100kHz and 400kHz I2C Communication Speeds
• Standard and Overdrive 1-Wire Communication Speeds
• Adjustable 1-Wire Timing for tRSTL, tMSP, tW0L, and tREC0
• 1-Wire Port Can Be Powered Down Under Software Control
• Supports Power-Saving Sleep Mode (SLPZ Pin), Where the 1-Wire Port is in High Impedance
• I2C Operating Voltages: 1.8V ±5%, 3.3V ±10%, and 5.0V +5/-10%
• Built-In Level Translator: 1-Wire Operating Voltage from 1.8V -5% to 5.0V +5%, Independent of I2C Voltage
• Built-In ESD Protection Level of ±8kV Human Body Model (HBM) Contact Discharge on IO Pin
• -40°C to +85°C Operating Temperature Range

Controllers Applications

• Printers
• Medical Instruments
• Industrial Sensors
• Cell Phones

Controllers Procurement Notes

Verify the specific ordering suffix '+T' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the manufacturer designation matches current Analog Devices Inc. specifications, as corporate structures may affect documentation sources. Ensure compliance with RoHS directives applicable to your region before finalizing procurement orders.

Controllers Selection Notes

Select this component when an I2C master requires connectivity to a single 1-Wire bus line. The adjustable timing parameters allow optimization for various slave device requirements. Consider the SOT-23-6 package constraints regarding thermal dissipation and board space. Verify that the I2C voltage levels are compatible with the host processor logic levels.

Controllers Part Context

The DS2484 belongs to the Maxim Integrated 1-Wire controller family, designed to simplify system integration by offloading time-critical 1-Wire waveform generation from the main host processor. This bridge architecture allows standard microcontrollers without native 1-Wire support to communicate with sensors, memory, and other peripherals on the 1-Wire network efficiently.

Controllers Replacement Considerations

DS2483R+T