MCP48FVB14T-20E/ST Equivalent & Substitute Parts

Part Overview

The MCP48FVB14T-20E/ST is a 10-bit digital-to-analog converter (DAC) manufactured by Microchip Technology, designed for data acquisition applications requiring multiple voltage output channels. This device features four independent D/A converters in a 20-TSSOP surface mount package and operates across a wide supply voltage range of 2.7V to 5.5V for both analog and digital supplies. The part is classified as Active product status with Automotive grade qualification and AEC-Q100 certification, making it suitable for automotive and industrial applications.

Substitute parts are necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility requires alternative sourcing options while maintaining identical electrical and mechanical specifications.

Substiute Parts

MCP48FVB14T-20E/ST

Microchip TechnologyIn Stock: 3222MCP48FVB14T-20E/ST Datasheet

Current PartRFQ

MCP48FEB18T-20E/ST

Microchip TechnologyIn Stock: 1583MCP48FEB18T-20E/ST Datasheet

Parametric EquivalentRFQ

MCP48FVB18T-20E/ST

Microchip TechnologyIn Stock: 3236MCP48FVB18T-20E/ST Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MCP48FVB14T-20E/ST are determined by strict equivalence across all critical electrical and mechanical parameters. The substitution logic is based on the following key parameters that must remain identical:

• Resolution: 10-bit digital-to-analog conversion
• Channel Count: 4 independent D/A converters
• Settling Time: 7.8µs typical response
• Output Configuration: Voltage-unbuffered topology
• Interface Protocol: SPI serial communication
• Supply Voltage Range: 2.7V to 5.5V for both analog and digital supplies
• Accuracy Specifications: INL/DNL of ±0.4LSB and ±0.05LSB
• Temperature Range: -40°C to 125°C operational capability
• Package Format: 20-TSSOP surface mount package with 0.173" width (4.40mm)
• Compliance Standards: Automotive grade with AEC-Q100 qualification
• Environmental Compliance: ROHS3 compliant

The substitute parts MCP48FVB18T-20E/ST and MCP48FEB18T-20E/ST meet all these criteria and are therefore direct functional equivalents suitable for replacement in applications requiring the MCP48FVB14T-20E/ST.

Parameter Comparison

Engineering Selection Recommendations

All three parts—MCP48FVB14T-20E/ST, MCP48FVB18T-20E/ST, and MCP48FEB18T-20E/ST—are classified as Active product status from Microchip Technology and carry identical compliance certifications. Each part maintains Automotive grade qualification with AEC-Q100 certification, ensuring suitability for automotive and industrial applications requiring stringent reliability standards.

All substitute parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The electrical specifications, including 10-bit resolution, 4-channel configuration, 7.8µs settling time, and identical supply voltage ranges, are equivalent across all three parts.

Selection between these parts should be based on availability and inventory status. The MCP48FVB14T-20E/ST currently maintains 3121 pieces in stock, while MCP48FVB18T-20E/ST has 3175 pieces and MCP48FEB18T-20E/ST has 1523 pieces available. All parts are supplied in Tape & Reel packaging suitable for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can MCP48FVB18T-20E/ST be used as a direct replacement for MCP48FVB14T-20E/ST?

A: Yes. The MCP48FVB18T-20E/ST is a direct parametric equivalent with identical electrical specifications, package format, and compliance certifications. No circuit modifications are required for substitution.

Q: Are there differences between MCP48FVB18T-20E/ST and MCP48FEB18T-20E/ST?

A: Both parts share identical electrical parameters, package specifications, and compliance standards. The primary difference is the base product number designation (MCP48FVB18 versus MCP48FEB18), but they are functionally equivalent for the specified application.

Q: What is the significance of the 20-TSSOP package specification?

A: The 20-TSSOP package indicates a thin shrink small outline package with 20 pins, 0.173 inches in width (4.40mm). This specification ensures mechanical compatibility with existing PCB layouts and automated assembly equipment. All substitute parts use identical packaging.

Q: Do all substitute parts support the same SPI interface protocol?

A: Yes. All three parts implement SPI serial communication with identical timing and protocol specifications, ensuring software and firmware compatibility without modification.

Q: Are the supply voltage requirements identical across all substitute parts?

A: Yes. All parts operate with analog and digital supply voltages ranging from 2.7V to 5.5V, providing identical flexibility for power supply design.

Q: What is the operating temperature range for these parts?

A: All parts operate across -40°C to 125°C, meeting automotive and industrial temperature requirements.

Q: Do these parts require external reference voltage?

A: Yes. All three parts use external reference type configuration, requiring an external reference voltage source for D/A conversion operation.

Q: Are moisture sensitivity considerations the same for all parts?

A: The MCP48FVB14T-20E/ST and MCP48FVB18T-20E/ST both specify Moisture Sensitivity Level (MSL) 3 with 168-hour rating. The MCP48FEB18T-20E/ST does not specify MSL in the provided data. Verify MSL requirements for your specific storage and handling conditions.