DS2482S-800+T&R

DS2482S-800+T&R is an 8-channel 1-wire host. It is an I²C-to-1-Wire® bridge device that interfaces directly to standard (100KHz, max) or fast (400KHz, max) I²C hosts to perform bidirectional protocol conversion between the I²C host and any downstream 1-wire server devices. Relative to any attached 1-wire server device, the DS2482-800 is a 1-wire host. Internal factory-trimmed timers relieve the system host processor from generating time-critical 1-wire waveforms, supporting both standard and overdrive 1-wire communication speeds. To optimize 1-wire waveform generation, the DS2482-800 performs slew-rate control on rising and falling 1-wire edges and has a programmable feature to mask the fast presence pulse edge that some 1-wire server devices can generate. Typical applications include wireless base stations, central office switches, PBXs, rack-based servers, and medical clinical diagnostic equipment.

• Allows easy interface between a I²C microport and a 1-wire server
• 8 channels of independently operated 1-wire I/O
• 1-wire host I/O with selectable active or passive 1-wire pullup
• Provides reset/presence, 8-bit, single-bit, and 3-bit 1-wire I/O sequences
• Standard and overdrive 1-wire communication speeds
• Three address inputs for I²C address assignment
• Minimizes line noise, reducing system EMI, slew-controlled 1-wire edges
• Supply voltage range from 2.9 to 5.5V at TA=-40°C to +85°C
• 16 SO package
• Temperature range from -40°C to +85°C