Infrared Encoder/Decoder 8-Pin SOIC N T/R

The MCP2122 is a stand-alone IrDA standard encoder/ decoder device that is pinout-compatible with the Agilent HSDL-7000 encoder/decoder.The MCP2122 has two interfaces: the host UART interface and the IR interface. The host UART interfaces to the UART of the Host Controller. The Host Controller is the device in the embedded system that transmits and receives the data. The IR interface connects to an infrared (IR) optical transceiver circuit that converts electrical pulses into IR light (encode) and converts IR light into electrical pulses (decode). This IR optical transceiver circuit could be either a standard infrared optical transceiver (such as a Vishay TFDU 4300) or it could be implemented with discrete components.When the Host Controller transmits the UART format data, the MCP2122 receives this UART data and encodes (modulates) it bit by bit. This encoded data is then output as electrical pulses to the IR transceiver. The IR transceiver will then convert these electrical pulses to IR light pulses.The IR transceiver also receives IR light pulses (data), which are outputted as electrical pulses. The MCP2122 decodes (demodulates) these electrical pulses, with the data then being transmitted by the MCP2122 UART. This modulation/demodulation method is performed in accordance with the IrDA standard.

• Pinout compatible with HSDL-7000
• Compliant with IrDA® Standard Physical Layer Specification (version 1.3)
• UART to IrDA Standard Encoder/Decoder
  • Interfaces with IrDA Standard Compliant Transceiver
• Baud Rates:
  • Up to IrDA Standard 115.2 Kbaud Operation
• Transmit/Receive Formats (Bit Width) Supported: - 1.63 µs
• Low-power Mode (2 µA at 1.8V, +125°C)
• Pb-free packaging
• Tape and Reel Packaging