DS2490 Datasheet USB to 1-Wire Bridge Chip

Manufacturer: Maxim Integrated (now Analog Devices)

Datasheet Details

Part number	DS2490
Manufacturer	Maxim Integrated (now Analog Devices)
File Size	1.35 MB
Description	USB to 1-Wire Bridge Chip
Download	DS2490 Download (PDF)

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.

19-4993; 10/09 www.maxim-ic.com.

Communicates at regular and overdrive 1Wire® speeds.
Supports 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 pro.

Part Number	Description
DS2401	Silicon Serial Number
DS2405	Addressable Switch
DS2406	Dual Addressable Switch Plus 1Kb Memory
DS2408	1-Wire 8-Channel Addressable Switch
DS2411	Silicon Serial Number
DS2413	1-Wire Dual Channel Addressable Switch
DS2417	1-Wire Time Chip
DS2422	1-Wire Temperature/Datalogger
DS2423	4kbit 1-Wire RAM
DS2430A	256-Bit 1-Wire EEPROM