DS2484Q+T

Controllers Overview

The DS2484Q+T is a single-channel I²C-to-1-Wire bridge device manufactured by Analog Devices Inc. It interfaces with standard (100kHz max) or fast (400kHz max) I²C masters to perform protocol conversion for downstream 1-Wire slave devices. The component supports both standard and overdrive 1-Wire communication speeds, featuring internal user-adjustable timers for tRSTL, tMSP, tW0L, and tREC0. It operates within a supply voltage range of 1.71V to 5.25V and includes strong pullup capabilities for power delivery to devices like EEPROMs and sensors. The device offers dual-voltage operation, allowing different operating voltages on the I²C and 1-Wire sides, and supports a low-power sleep mode.

Controllers Feature Summary

• Hardware-level 1-Wire timing generation relieves the host processor from managing time-critical waveforms.
• Active pullup feature ensures rapid signal rising edges for improved bus performance.
• Software-controllable 1-Wire port power-down capability allows forcing slave device resets.
• Built-in level translator enables independent 1-Wire operating voltages relative to the I²C voltage.

Controllers Applications

• Printers
• Medical Instruments
• Industrial Sensors

Controllers Procurement Notes

Verify the specific suffix 'Q' against the manufacturer's current datasheet to confirm package type and temperature grade. Confirm RoHS compliance status through official documentation. Check for any regional distribution restrictions or obsolescence notices directly from Analog Devices before finalizing procurement plans.

Controllers Selection Notes

Select this component when an I²C master requires hardware-based 1-Wire protocol conversion without burdening the CPU with bit-banging. Ensure the application benefits from adjustable timing parameters and active pullup features for long-line reliability. Verify that the required 1-Wire slave devices are compatible with the supported standard and overdrive speeds.

Controllers Part Context

The DS2484 belongs to the DS2484Q series of I/O controller interface ICs. It serves as a dedicated bridge between I²C hosts and 1-Wire networks. The 'Q' designation typically indicates a specific package variant or qualification level within the broader product family, distinct from other suffixes like 'U'.

Controllers Replacement Considerations

Public confirmed substitute part numbers: None identified in verified source material.