MCP2122-E/P

Encoders, Decoders, Converters Overview

The MCP2122-E/P 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 supply voltage range of 1.8V to 5.5V and features low-power consumption, including a disabled current of 2 µA at 1.8V. It supports transmit/receive formats with bit widths of 1.63 µs and is available in an 8-pin PDIP package.

Encoders, Decoders, Converters Feature Summary

• Pinout compatible with HSDL-7000
• Compliant with IrDA Standard Physical Layer Specification version 1.3
• Low-power mode operation

Encoders, Decoders, Converters Applications

• Data-Logging/Data Exchange
• System Setup
• Manufacturing Configuration
• Host Controller Firmware Updates

Encoders, Decoders, Converters Procurement Notes

Verify that the ordering suffix 'P' corresponds to the 8-pin PDIP package type as specified in the datasheet. Confirm the '-E' designation indicates the extended temperature range of -40°C to +125°C. Ensure the component meets RoHS requirements for lead-free packaging before procurement.

Encoders, Decoders, Converters Selection Notes

Select this component when pin compatibility with the Agilent HSDL-7000 is required. It is suitable for systems needing IrDA physical layer compliance without hardware or software baud rate selection. Ensure the design provides an external 16XCLK signal, as the device does not generate its own clock.

Encoders, Decoders, Converters Part Context

The MCP2122 is part of Microchip's IrDA family of encoder/decoders. Unlike the MCP2120, it lacks internal baud rate generation and requires an external 16XCLK input. It shares similarities with the MCP2140 but offers variable baud rate support up to 115.2 Kbaud rather than a fixed rate.

Encoders, Decoders, Converters Replacement Considerations

The MCP2122-E/SN is a pin-compatible SOIC variant. Direct replacement with other MCP21xx series devices may require circuit modifications due to differences in baud rate generation capabilities.