DS9490B

USB bridge, DIP, -0.3V to +6V, DS9490B

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Price:: US $14.90~49.90 / piece [Get Latest Price]

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	US $14.90~49.90

PartNumber:: DS9490B

Brand:: Dallas Semiconductor - Maxim | Pack: DIP | D/C: 11+

Availability:: Supply Ability: 10000/Week Can Ship Immediately
Delivery: 10-15 Business Days (ships out within 3 Business days)

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Products Upload time: 2012-10-09

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Part Number:DS9490B
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Product Summary

The DS9490B is an USB bridge and holder for a single F5-size iButton. The iButton is securely held behind a latched door. The DS9490B is a USB bridge with 1-Wire RJ11 interface to accommodate 1-Wire receptacles and networks. The DS9490B (Blue Dot™) can readily be used in conjunction with the DS9490B to create an iButton PC reader. Both adapters are based on the DS2490 USB to 1-Wire bridge chip. The applications of the DS9490B are (1)Software Authorization—Protection against software piracy by tying software operation to the presence of iButton hardware; (2)iButton Initialization and Download Loggers like the Thermochron? can be missioned and downloaded. Monetary iButtons can be refilled with money; (3)Demonstration—Demonstrate the features of iButtons or 1-Wire chips on personal computers; (4)Development—Aid development of 1-Wire applications by providing a PC interface to verify device contents and state.

Parametrics

DS9490B absolute maximum ratings: (1)I/O Voltage Range to GND: -0.3V to +6V; (2)I/O Sink Current: 20mA; (3)Operating Temperature Range: +15 to +140℃; (4)Junction Temperature: +150℃; (5)Storage Temperature Range: -25 to +140℃.

Features

DS9490B features: (1)High-Speed 12Mbps Universal Serial Bus (USB) Interface; (2)Supports Standard and Overdrive 1-Wire Communication; (3)Slew-Rate-Controlled 1-Wire Timing and Active Pullup for Improved 1-Wire Network Performance ; (4)DS9490R has an RJ11 Interface for Standard Connectivity Accessories such as the DS1402D-DR8; (5)DS9490B has an iButton Interface and Retains a Fixed iButton ; (6)Built-In Custom DS2401 Identification Chip; (7)Reads all 1-Wire and iButton Devices. Writes All Except EPROM 1-Wire/iButton Devices.