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Part Number: DS2490
Description: The DS2490 is a bridge chip that enables communication between a USB host system and a 1-Wire bus.It p...
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DS2490
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DataSheet
General Description
DS2490 General Description
The DS2490 is a bridge chip that enables communication between a USB host system and a 1-Wire bus.It provides regular, overdrive, and flexible 1-Wire communication speeds and a full-speed 12Mbps connection to USB. USB vendor-specific commands defined in this specification are used to control the DS2490 and communicate with attached 1-Wire devices. A functional block diagram of the DS2490 is shown in Figure 1.
DS2490 Maximum Ratings
Voltage on Any Pin Relative to Ground....... -0.5V to +6.0V
Operating Temperature Range ............0 to +70
Storage Temperature Range ...........-55 to +125
Soldering Temperature .......See J-STD-020A Specification
• This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
Operating Temperature Range ............0 to +70
Storage Temperature Range ...........-55 to +125
Soldering Temperature .......See J-STD-020A Specification
• This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability.
DS2490 Features
` Communicates at regular and overdrive 1-Wire® speeds
` Supports 12V EPROM programming and stiff 5V pullup for EEPROM, sensors, and crypto iButton®
` Slew rate controlled 1-Wire timing and active pullup to accommodate long 1-Wire network lines and reduce radiation
` Programmable 1-Wire timing and driver characteristics accommodate a wide range of 1-Wire network configurations
` Low- to high-level command types, including macros, for generating 1-Wire communication
` Crystal oscillator timebase provides precision timed 1-Wire waveforms
` High-speed 12Mbps Universal Serial Bus (USB) interface
` Integrated USB-compliant transceiver
` Supports USB remote wake-up from a 1-Wire device event to resume a suspended host system
` 0 to +70 operating temperature range
` Supports 12V EPROM programming and stiff 5V pullup for EEPROM, sensors, and crypto iButton®
` Slew rate controlled 1-Wire timing and active pullup to accommodate long 1-Wire network lines and reduce radiation
` Programmable 1-Wire timing and driver characteristics accommodate a wide range of 1-Wire network configurations
` Low- to high-level command types, including macros, for generating 1-Wire communication
` Crystal oscillator timebase provides precision timed 1-Wire waveforms
` High-speed 12Mbps Universal Serial Bus (USB) interface
` Integrated USB-compliant transceiver
` Supports USB remote wake-up from a 1-Wire device event to resume a suspended host system
` 0 to +70 operating temperature range
DS2490 Connection Diagram
DS2490
PDF/DataSheet Download
- Datasheet: DS2490
- File Size: 543695 KB
- Manufacturer: Dallas
- Click here to Download
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DS2490 Relative Products
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DS2482X-100+T
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DS2482S-800+T&R
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DS2482S-800+
IC I2C TO 1WIRE BRIDGE 16SOIC
DS2482S-100+T&R
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DS2482S-100+
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