Maxim > Products > 1-Wire® Devices > DS9490, DS9490B, DS9490R
Maxim > Products > iButton® Devices > DS9490, DS9490B, DS9490R

DS9490, DS9490B, DS9490R

USB to 1-Wire/iButton Adapter
 Overview   Technical Documents   Ordering Info   Related Products   User Comments (2)   All   


Status Explanations for product status codes

Part Number Status
DS9490 Active: In Production.
DS9490B Active: In Production. See Ordering Information for details.
DS9490R Active: In Production. See Ordering Information for details.

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. For a list of suitable 1-Wire network cables, refer to the Connectivity Matrix table in the DS1402x 1-Wire network cables data sheet. Both adapters are based on the DS2490 USB-to-1-Wire bridge chip. Free software drivers for Windows®-based PCs can be downloaded from www.maxim-ic.com/1-Wiredrivers.
 

Data Sheet

Download this datasheet in PDF formatDownload Rev 3 (PDF, 240kB)
Send this datasheet to any email addressE-Mail

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 EPROM 1-Wire/iButton Devices
 

Applications/Uses

  • iButton Initialization and Download
  • Demonstration
  • Development
  • Software Authorization
   

Key Specifications:

iButton Readers and Adapters
Part Number Overview Features Budgetary Price
See Notes
DS9490B  9490B_sm
DS9490B USB iButton Holder
F5 Package Compatible
Permanently/Semi-permanently Retains an iButton
USB Port
USB Port Adapters
With ID
 $14.03 @1k
DS9490R  9490R_sm
USB to 1-Wire RJ11
USB Port
USB Port Adapters
With ID
 $14.03 @1k
See All iButton Readers and Adapters (24)
Pricing 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.


Diagram

DS9490, DS9490B, DS9490R: Typical Operating Circuit
Typical Operating Circuit

Application Notes

Application Note 1740   White Paper 6: 1-Wire® Drivers Installation Guide for Windows
User Guide 3358   OneWireViewer User's Guide, Version 1.5
Application Note 3808   What Is an iButton?
Application Note 3874   Simple Characterization Circuit for Rechargeable AA Cells
Reference Design 4206   Choosing the Right 1-Wire® Master for Embedded Applications
Tutorial 4373   OneWireViewer and iButton® Quick Start Guide
Application Note 4482   Bridge from USB to I²C

Product Guides

1-Wire® Products (PDF)

Reliability Reports

Reliability Report: DS9490.pdf DS9490R.pdf
Request Reliability Report for:

Software/Models

none

Ordering Information

Filters: Part Number: Package: Temperature: Tape and Reel Sample
Part Number Notes Free
Sample		 Buy Status Explanations for product status codes Recommended Replacement Package:
TYPE PINS FOOTPRINT
DRAWING  CODE/VAR * 		Temp RoHS/Lead-Free?
Materials Analysis
DS9490B   USB iButton Holder    N/A No Longer Available DS9490B#

 		 IBACC;

Land Pattern: Not Available

0°C to +70°C See data sheet
DS9490B#      
Active   IBACC;

Land Pattern: Not Available
Use pkgcode/variation: IB#ACC*
0°C to +70°C RoHS/Lead-Free: RoHS Qualified
Materials Analysis
DS9490B-E00       N/A No Longer Available  

Land Pattern: Not Available

0°C to +70°C See data sheet
DS9490B-MAC       N/A No Longer Available DS9490B-MAC

 		 IBACC;

Land Pattern: Not Available

0°C to +70°C See data sheet
DS9490B-MAC#       N/A No Longer Available   IBACC;

Land Pattern: Not Available

0°C to +70°C See data sheet
DS9490R       N/A No Longer Available DS9490R#

 		 IBACC;

Land Pattern: Not Available

0°C to +70°C See data sheet
DS9490R#      
Active   IBACC;

Land Pattern: Not Available
Use pkgcode/variation: IB#ACC*
0°C to +70°C RoHS/Lead-Free: RoHS Qualified
Materials Analysis
DS9490R-E00       N/A No Longer Available  

Land Pattern: Not Available

0°C to +70°C See data sheet

Notes:
  1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
  2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
  3. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product Naming Conventions.
  4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

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More Information

Software Authorization Kit (a free software development kit with source)


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Information Index

Overview

  

Technical Documents

  

Ordering Info

  

Related Products

  
Description
Key Features
Applications/Uses
Key Specifications
Diagram
Notes and Comments
  Data Sheet
Application Notes
Evaluation Kits
Product Guides
Reliability Reports
Software/Models
  Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information
  Similar Products by Function
Similar Products by Application
Evaluation Kits
Products with Similar Part Numbers
Products Used With This
 
Document Ref.: 19-4881 Rev 3; 2011-06-13
This page last modified: 2011-06-13

 


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