MCP2140AT-I/SO Equivalent & Substitute Parts

Part Overview

The MCP2140AT-I/SO is an IrDA® Controller with UART interface manufactured by Microchip Technology, housed in an 18-SOIC package. This component functions as a DTE/DCE interface controller for infrared communication applications. The part is currently in active production status with 1150 units available in new original stock. Substitute parts are identified when equivalent functional performance can be maintained within the specified electrical and mechanical parameters while accommodating different packaging or supply voltage ranges.

Substiute Parts

MCP2140AT-I/SO

Microchip TechnologyIn Stock: 1181MCP2140AT-I/SO Datasheet

Current PartRFQ

MCP2140A-I/SO

Microchip TechnologyIn Stock: 1287MCP2140A-I/SO Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MCP2140AT-I/SO is determined by the following criteria:

Critical Parameters (Must Match):

• IrDA® protocol support
• UART interface functionality
• 18-SOIC package form factor (0.295", 7.50mm Width)
• Supply current: 2.2mA
• Operating temperature range: -40°C ~ 125°C
• RoHS3 compliance
• Active product status from Microchip Technology

Allowable Variations:

• Supply voltage range (provided the substitute range encompasses the application requirement)
• Packaging format (Tape & Reel vs. Tube)
• Inventory availability

The MCP2140A-I/SO qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The MCP2140A-I/SO is a qualified substitute for the MCP2140AT-I/SO based on the following engineering criteria:

Both parts maintain identical functional specifications for IrDA® protocol control and UART interface operation. Both are manufactured by Microchip Technology, carry active product status, and meet ROHS3 compliance requirements. The electrical characteristics—supply current of 2.2mA and operating temperature range of -40°C to 125°C—are identical across both parts.

The primary distinction is the supply voltage range. The MCP2140AT-I/SO operates from 2V to 5.5V, while the MCP2140A-I/SO operates from 3V to 5.5V. Selection between these parts depends on whether the application requires operation below 3V. For applications operating at 3V or higher, the MCP2140A-I/SO is functionally equivalent.

The secondary distinction is packaging format: the main part is supplied in Tape & Reel format, while the substitute is supplied in Tube format. This affects handling and assembly processes but does not impact electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the MCP2140A-I/SO replace the MCP2140AT-I/SO in all applications?

A: The MCP2140A-I/SO is compatible with applications operating at supply voltages of 3V or higher. If your application requires operation below 3V, the MCP2140AT-I/SO is required. Both parts are electrically and mechanically identical in all other parameters.

Q: Are the package dimensions identical between these parts?

A: Yes. Both parts use the 18-SOIC package with dimensions of 0.295" × 7.50mm width. They are mechanically interchangeable on the PCB.

Q: What is the difference between Tape & Reel and Tube packaging?

A: Tape & Reel packaging is used for automated assembly processes, while Tube packaging is used for manual handling or lower-volume applications. The component itself is identical; only the delivery format differs.

Q: Are both parts RoHS compliant?

A: Yes. Both the MCP2140AT-I/SO and MCP2140A-I/SO are ROHS3 compliant and REACH unaffected.

Q: What is the supply current requirement for these parts?

A: Both parts require 2.2mA supply current under normal operating conditions.

Q: Do these parts support the same operating temperature range?

A: Yes. Both parts operate across the temperature range of -40°C to 125°C.