(China (Mainland))
Product Summary
The DS2490S 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 DS2490S and communicate with attached 1-Wire devices. The DS2490S directly interfaces a USB port to a 1-Wire bus. The DS2490S incorporates a USB physical interface, a USB device controller coupled with a 1-Wire-specific USB function core, and a 1-Wire bus interface controller.
Parametrics
DS2490S absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: -0.5V to +6.0V; (2)Operating Temperature Range: 0 to +70℃; (3)Storage Temperature Range: -55 to +125℃.
Features
DS2490S features: (1)Communicates at regular and overdrive 1-Wire speeds; (2)Supports stiff 5V pullup for EEPROM, sensors, and crypto iButton; (3)Slew rate controlled 1-Wire timing and active pullup to accommodate long 1-Wire network lines and reduce radiation; (4)Programmable 1-Wire timing and driver characteristics accommodate a wide range of 1-Wire network configurations; (5)Low- to high-level command types, including macros, for generating 1-Wire communication; (6)Crystal oscillator timebase provides precision timed 1-Wire waveforms; (7)High-speed 12Mbps Universal Serial Bus (USB) interface; (8)Integrated USB-compliant transceiver; (9)Supports USB remote wake-up from a 1-Wire device event to resume a suspended host system; (10)0℃ to +70℃ operating temperature range.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
Quantity | ||||||
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 DS2490S |
Maxim Integrated Products |
Interface - Specialized |
Data Sheet |
Negotiable |
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DS2490S+T&R |
Maxim Integrated Products |
IC USB TO 1WIRE BRIDGE 24SOIC |
Data Sheet |
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DS2490S+ |
Dallas Semiconductor |
IC USB TO 1WIRE BRIDGE 24SOIC |
Data Sheet |
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