DS9490R/DS9490B 1-Wire/iButton Adapter High-Speed 12Mbps Universa
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19-4881; 8/09
DS9490R/DS9490B 1-Wire/iButton Adapter
High-Speed 12Mbps Universal Serial (USB) Interface Supports Standard Overdrive 1-Wire® Communication Slew-Rate-Controlled 1-Wire Timing Active Pullup Improved 1-Wire Network Performance DS9490R RJ11 Interface Standard Connectivity Accessories such DS1402D-DR8 DS9490B iButton® Interface Retains Fixed iButton Built-In Custom DS2401 Identification Chip Reads 1-Wire iButton Devices. Writes Except EPROM 1-Wire/iButton Devices
TYPICAL OPERATING CIRCUIT
DS9490B
iButton
DS9490R DS1402D-DR8
ORDERING INFORMATION
PART DESCRIPTION DS9490B# Single iButton Holder with Protective DS9490R# 1-Wire RJ11
#Denotes RoHS-compliant device that include lead(Pb) that exempt under RoHS requirements.
APPLICATIONS
Software Authorization-Protection against software piracy tying software operation presence iButton hardware. iButton Initialization Download- Loggers like Thermochron® missioned downloaded. Monetary iButtons refilled with money. Demonstration-Demonstrate features iButtons 1-Wire chips personal computers. Development-Aid development 1-Wire applications providing interface verify device contents state.
PACKAGING/SHIPPING INFORMATION
part shipped individually anti-static bag.
1-Wire, iButton, Thermochron registered trademarks Maxim Integrated Products, Inc. Blue trademark Maxim Integrated Products, Inc. Windows Windows registered trademarks Microsoft Corp.
DESCRIPTION
DS9490B bridge holder single F5-size iButton. iButton securely held behind latched door. DS9490R bridge with 1-Wire RJ11 interface accommodate 1-Wire receptacles networks. DS1402D-DR8 (Blue DotTM) readily used conjunction with DS9490R create iButton reader. Both adapters based DS2490 1-Wire bridge chip. software drivers Windows® Windows 2000, Windows Windows operating website under software support systems found iButton
DS9490
Figure DS9490R
Figure DS9490B
*Note: eject iButton, insert straightened paper clip into side access hole DS9490B. Push paper clip direction iButton. different iButton then inserted. data contact faces down away from embossed `i'. Before inserting paper clip disconnect DS9490B from bus. Each bridge contains unique built-in identification chip. identification chip custom DS2401 that 64-bit number (see Figure
Figure DS2401 CHIP 64-BIT LASERED
8-BIT CODE 12-BIT FIXED (000H) 36-BIT SERIAL NUMBER 8-BIT FAMILY CODE (81H)
DS9490
CONFIGURATION Figure 1-Wire RJ11 SOCKET DS9490R
SIGNAL NAME GND_OW SUSO N.C. DESCRIPTION 5VDC Output Power Ground 1-Wire Data 1-Wire Return Suspend Output Connection
Looking into Female RJ11 Connector
Figure iButton SOCKET DS9490B
SIGNAL NAME GND_OW DESCRIPTION 1-Wire Data 1-Wire Return
*Note: data contact faces down away from embossed `i'. Once iButton inserted enclosure, snap over removed depressing release with paper clip, swinging fully open, sliding hinge.
DS9490
MECHANICAL DIMENSIONS
dimensions millimeters.
Figure DS9490R
11.66
20.42
42.65
13.89 21.54
3.12
Figure DS9490B
56.82
24.94 11.66
8.74 16.54 3.28
ENVIRONMENTAL REQUIREMENTS
CONDITION Storage Storage Storage Operating Operating PARAMETER Temperature Relative humidity, noncondensing Duration Temperature Relative humidity, noncondensing VALUE -10°C +85°C (max) 95%RH +85C +70°C
DS9490
ELECTRICAL CHARACTERISTICS
PARAMETER 1-Wire SPECIFICATION defined Chapter Specification* DS2490 data sheet**
DS9490R DS9490B consume 58mA active mode 0.5mA suspend mode*. DS9490R VBUS power ground available RJ11 connector. active mode current available externally powered fixture 42mA* (100mA 58mA); however recommended that more than 25mA used. external circuit detect when module suspend monitoring SUSO signal RJ11 connector. When this condition detected, external circuit must also into power state. NOTE: SUSO DS2490 open drain output requires pullup resistor create valid signal. DS2490 data sheet conditions where SUSO active. Revision DS9490R revisions DS9490R# have SUSO routed RJ11 connector. availability SUSO RJ11 connector production tested. Therefore, before relying SUSO application, first verify presence this signal with particular adapter.
*Guaranteed design, production tested. **Tested DS2490 component level.
Figure FUNCTIONAL DIAGRAM
Connector VBUS
1.0uF Filter Filter 0.1uF 1.5K 33pF 33pF
LP2980IM5-3.3
VOUT
DS2490 PMOD SUSO
12Mhz
33pF
33pF
DS2401
DS9503
Female RJ11
DS9490R
iButton Socket
DS9490B
DS9490
REVISION HISTORY
REVISION DATE 8/09 DESCRIPTION Removed references leaded packages Ordering Information table. PAGES CHANGED
Maxim cannot assume responsibility circuitry other than circuitry entirely embodied Maxim product. circuit patent licenses implied. Maxim reserves right change circuitry specifications without notice time.
Maxim Integrated Products, Gabriel Drive, Sunnyvale, 94086 408-737-7600
2009 Maxim Integrated Products Maxim registered trademark Maxim Integrated Products, Inc.
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