DS2482S-800+

Controllers Overview

The DS2482S-800+ is an I²C-to-1-Wire bridge device providing eight independent 1-Wire master channels. It interfaces with standard (100kHz) or fast (400kHz) I²C masters to perform bidirectional protocol conversion. The device supports both standard and Overdrive 1-Wire communication speeds, utilizing internal factory-trimmed timers for precise waveform generation. Key electrical parameters include a supply voltage range of 2.9V to 5.5V, operating current of 0.75mA, and an industrial temperature range of -40°C to +85°C. It features programmable strong pullup capabilities and slew-rate control to minimize line noise.

Controllers Feature Summary

• Eight independently operated 1-Wire I/O channels allow connection to multiple distinct 1-Wire networks.
• Internal hardware state machine handles time-critical 1-Wire waveforms, relieving the host processor from precise timing requirements.
• Programmable active and strong pullup features support power delivery to parasitically powered devices like EEPROMs and sensors.
• Slew-controlled 1-Wire edges minimize line noise and reduce system electromagnetic interference.

Controllers Applications

• Wireless Base Stations
• Central Office Switches
• PBXs
• Rack-Based Servers
• Medical Clinical Diagnostic Equipment

Controllers Procurement Notes

Verify the specific package variant required for your design, as the base part number may be available in tape-and-reel formats. Confirm that the three address pins are correctly tied to VCC or GND to establish the unique I²C slave address. Ensure the host system supports the required I²C clock speeds and that the power supply remains within the specified 2.9V to 5.5V range during operation.

Controllers Selection Notes

Select this component when an I²C host needs to manage multiple separate 1-Wire buses simultaneously. The eight-channel architecture eliminates the need for external multiplexers. Consider the strong pullup capability if connecting devices requiring high source currents, such as EEPROMs during memory copy operations. Verify that the 16-pin SO package fits the available PCB footprint constraints.

Controllers Part Context

This component belongs to the DS2482 series of 1-Wire masters manufactured by Analog Devices Inc./Maxim Integrated. It serves as a hardware bridge between I²C microcontrollers and 1-Wire slave devices. The '800' suffix specifically denotes the eight-channel configuration, distinguishing it from single-channel variants in the same family.

Controllers Replacement Considerations

DS2482S-800+