DS9490B - USB to 1-Wire/iButton Adapters

Maxim Integrated (now Analog Devices)

Download the DS9490B datasheet PDF. This datasheet also covers the DS9490R variant, as both devices belong to the same usb to 1-wire/ibutton adapters family and are provided as variant models within a single manufacturer datasheet.

📥 Download Datasheet

DS9490B usb to 1-wire/ibutton adapters by Maxim Integrated (now Analog Devices) - Datasheet Preview — Note: The manufacturer provides a single datasheet file (DS9490R-MaximIntegrated.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	DS9490B
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	712.67 KB
Description	USB to 1-Wire/iButton Adapters
Datasheet	DS9490B Datasheet

General Description

The DS9490B is a USB bridge and holder for a single F5-size iButton.

The iButton is securely held behind a latched door.

The DS9490R is a USB bridge with 1-Wire RJ11 interface to accommodate 1-Wire receptacles and networks.

Overview

AVAILABLE DS9490R/DS9490B USB to 1-Wire/iButton Adapters.

Key Features

High-Speed 12Mbps Universal Serial Bus (USB) Interface.
Supports Standard and Overdrive 1-Wire® Communication.
Slew-Rate-Controlled 1-Wire Timing and Active Pullup for Improved 1-Wire Network Performance.
DS9490R has an RJ11 Interface for Standard Connectivity Accessories such as the DS1402D-DR8.
DS9490B has an iButton® Interface and Retains a Fixed iButton.
Built-In Custom DS2401 Identification Chip.
Reads all 1-Wire and iButton Devices. Writes All Except EPR.

More Datasheets from Maxim Integrated (now Analog Devices)

Part Number	Description
DS9490R	USB to 1-Wire/iButton Adapters
DS9092	iButton Probe
DS9097U	Universal 1-Wire COM Port Adapter
DS9101	Multipurpose
DS9503	ESD Protection Diode