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MAX1704x Micropower 1-Cell/2-Cell Li+ ModelGauge IC USB-to-RJ11 PicBrick Board
Manufacturer Part #: DS91230+
Avnet Manufacturer Part #: DS91230+
The DS9123O Universal USB Adapter is a type 1 HID device that converts standard USB communication into a 1-wire, 2-wire, 3-wire, or SPI interface. The DS9123O is powered completely from the USB interface. A PIC16C745 microprocessor running at 6MHz generates all timing for communication. Each RJ-11 output is bi-directional open drain and has 50 ohms series resistance to protect the processor pins.