MCP2140A-I/SO Microchip Integrated Circuit (Small Outline Packages) In Stock
MCP2140A-I/SO is an IrDA standard infrared communications controller by Microchip Technology, supporting serial data rates up to 115.2 kbps and integrating the physical layer framing in a single 18-pin SOIC package. Key specs: SIR (Serial Infrared) IrDA 1.2 compliant, UART interface to host MCU, 2.7 V to 5.5 V supply range. Pb-free SOIC-18 package suits space-constrained wireless data link designs.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- MCP2140A-I/SO Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.4481(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of MCP2140A-I/SO?
- IrDA 1.2 SIR compliant infrared controller supporting baud rates from 1200 bps to 115.2 kbps enables standard point-to-point wireless data links without an RF antenna
- Integrated IrDA physical layer framing and encoder/decoder reduces host MCU firmware complexity to simple UART transmit and receive
- 2.7 V to 5.5 V wide supply range allows the MCP2140A-I/SO to operate in both 3.3 V and 5 V embedded systems without level-shifting
- 18-pin SOIC package with single-function integration simplifies PCB routing for the infrared transceiver section in handheld and portable devices
What is MCP2140A-I/SO used for?
MCP2140A-I/SO is designed for short-range infrared data link applications in portable consumer devices, handheld instruments, and point-of-sale terminals where IrDA-compatible wireless communication at up to 115.2 kbps is required without RF regulatory approvals. Medical monitoring equipment, industrial handhelds, and legacy PDA accessories use it to implement the IrDA SIR physical layer with minimal firmware overhead, as the device handles framing and encoding autonomously. Printer interfaces, barcode scanner communication ports, and PC peripheral connectivity that require IrDA compliance also rely on the MCP2140A-I/SO for a compact single-chip solution.
What are the specifications of MCP2140A-I/SO?
| Pbfree Code | Yes |
| Manufacturer Package Code | SOIC-18 |
| Factory Lead Time | 6Weeks |
| YTEOL | 8 |
| JESD-30 Code | R-PDSO-G18 |
| JESD-609 Code | e3 |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP18,.4 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Screening Level | TS 16949 |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Telecom IC Type | TELECOM CIRCUIT |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 2 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Thailand |
Where can I find the MCP2140A-I/SO datasheet?
MCP2140A-I/SO Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for MCP2140A-I/SO?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What data rates does the MCP2140A-I/SO support, and are they compatible with standard IrDA SIR devices?
The MCP2140A-I/SO supports IrDA SIR (Serial Infrared) baud rates from 1200 bps up to 115.2 kbps, which are the standard rates defined by IrDA 1.2 for short-range infrared links. It is interoperable with other IrDA SIR-compliant devices such as laptop IR ports, mobile phone accessories, and IrDA-equipped printers that operate within the same 1200 bps to 115.2 kbps speed range.
How does the MCP2140A-I/SO interface with a host microcontroller, and how much MCU firmware is required?
The MCP2140A-I/SO connects to the host MCU via a standard asynchronous UART interface using TX and RX lines. The device handles IrDA SIR framing, start/stop pulse encoding, and IR modulation at 3/16 bit-period pulse width internally, so the MCU firmware only needs to configure its UART baud rate and send or receive plain serial bytes. This reduces IrDA implementation to a few lines of UART initialization code rather than requiring custom bit-level IR protocol handling.
What supply voltage range does the MCP2140A-I/SO require, and can it coexist with 3.3 V logic in a mixed-voltage system?
The MCP2140A-I/SO operates from a supply voltage of 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. In a 3.3 V system, the device UART pins are directly interfaceable with 3.3 V MCU GPIO without level-shifting, since the 2.7 V minimum supply allows full operation at 3.3 V. For 5 V systems, the same device operates without modification, simplifying inventory management when supporting multiple hardware platform variants.
For a handheld industrial scanner, how does the MCP2140A-I/SO compare to implementing IrDA in software on a microcontroller?
A software IrDA SIR implementation on a microcontroller requires the MCU to generate precise 3/16 bit-period IR pulses and monitor received pulse widths with timer interrupts, consuming CPU cycles and complicating real-time firmware. The MCP2140A-I/SO offloads all physical layer encoding and decoding to dedicated hardware, freeing the MCU to run application code while achieving guaranteed IrDA 1.2 compliance up to 115.2 kbps. This approach also reduces susceptibility to timing jitter from interrupt latency in 8-bit or 16-bit MCUs without dedicated IrDA hardware.
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| Qty. | Unit Price | Ext. Price |
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