MCP2122T-E/SNG

Encoders, Decoders, Converters Overview

The MCP2122T-E/SNG is an infrared encoder/decoder compliant with the IrDA Standard Physical Layer Specification (version 1.3). It interfaces a host UART to an IR optical transceiver, supporting baud rates up to 115.2 Kbaud determined by a 16XCLK external clock source. The device operates on a single supply voltage ranging from 1.8V to 5.5V and features low-power consumption, including a disabled mode drawing 2 µA at 1.8V. It supports transmit/receive formats of 1.63 µs bit width and is available in an 8-pin SOIC package.

Encoders, Decoders, Converters Feature Summary

• Pinout compatible with HSDL-7000
• Compliant with IrDA Standard Physical Layer Specification (version 1.3)
• Low-power Mode (2 µA at 1.8V, +125°C)

Encoders, Decoders, Converters Applications

• Data-Logging/Data Exchange
• System Setup
• System Diagnostic Read Out

Encoders, Decoders, Converters Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package type, temperature range, and tape-and-reel specifications. Ensure the component matches the required environmental ratings for the target application before procurement.

Encoders, Decoders, Converters Selection Notes

Select this component when an IrDA-compliant interface is required between a UART and an optical transceiver. Consider the 16XCLK clock requirement and the half-duplex nature of the communication link during system design.

Encoders, Decoders, Converters Part Context

The MCP2122 serves as a standalone encoder/decoder for infrared communications. It bridges standard UART signals to IrDA physical layer requirements, enabling wireless data exchange in embedded systems without cable connections.

Encoders, Decoders, Converters Replacement Considerations

The MCP2122 is pinout-compatible with the Agilent HSDL-7000. Verify functional equivalence and electrical characteristics before substituting other IrDA encoder/decoder devices.

Encoders, Decoders, Converters FAQ

How is the baud rate determined?

The baud rate is determined by the frequency of the external 16XCLK signal provided to the device.

What is the maximum baud rate supported?

The device supports operation up to 115.2 Kbaud.