FPC401RHUT Equivalent & Substitute Parts

Part Overview

The FPC401RHUT is an interface controller IC manufactured by Texas Instruments, designed for specialized control applications requiring I2C communication. This 56-WQFN surface mount device operates across a 1.8V to 3.3V supply voltage range and is actively produced with ROHS3 compliance. Substitute parts are identified when equivalent functional requirements, interface protocols, and electrical specifications align with the main part's operational parameters, enabling design flexibility and supply chain alternatives.

Substiute Parts

FPC401RHUT

Texas InstrumentsIn Stock: 924FPC401RHUT Datasheet

Current PartRFQ

ADP5585ACBZ-00-R7

Analog Devices Inc.In Stock: 2120ADP5585ACBZ-00-R7 Datasheet

MFR RecommendedRFQ

TW3801-TC1-CR

Renesas Electronics CorporationIn Stock: 2106TW3801-TC1-CR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the FPC401RHUT are evaluated based on the following critical parameters:

• Interface Protocol Compatibility: Primary substitutes must support I2C communication
• Voltage Supply Range: Operating voltage must overlap or encompass the 1.8V to 3.3V range
• Mounting Technology: Surface mount capability required
• Product Status: Active production status ensures availability
• Compliance Standards: ROHS3 and REACH compliance maintained across substitutes
• Functional Category: Interface controller classification

The identified substitutes meet these criteria while operating in different package configurations, allowing system designers to select alternatives based on PCB layout constraints and application-specific I/O requirements.

Parameter Comparison

Engineering Selection Recommendations

Selection between the FPC401RHUT and its substitutes is determined by application-specific interface requirements and PCB layout constraints:

The ADP5585ACBZ-00-R7 maintains I2C protocol compatibility with an extended voltage range of 1.65V to 3.6V and superior moisture sensitivity rating (MSL 1). This substitute is suitable for applications requiring keypad entry or I/O expansion functionality within compact form factors, given its significantly smaller 16-WLCSP package footprint.

The TW3801-TC1-CR operates with MII and RMII interface protocols, diverging from the I2C specification of the primary part. This substitute is applicable only in security systems applications where network interface protocols are required. The 100-TQFP package represents a larger footprint with MSL 3 rating, requiring controlled moisture exposure during storage and assembly.

All three parts maintain active production status and ROHS3 compliance, ensuring long-term availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the ADP5585ACBZ-00-R7 directly replace the FPC401RHUT in existing designs?

A: Direct replacement requires verification of I2C protocol compatibility and PCB layout accommodation for the 16-WLCSP package. The extended voltage range of 1.65V to 3.6V provides broader operational margins. Firmware and hardware interface validation is necessary before production implementation.

Q: What are the package size implications when substituting the TW3801-TC1-CR?

A: The TW3801-TC1-CR uses a 100-TQFP (12x12) package, significantly larger than the FPC401RHUT's 56-WQFN (5x11) footprint. This substitute requires substantial PCB layout redesign and is only applicable for security systems applications utilizing MII or RMII protocols, not I2C-based controller functions.

Q: How do moisture sensitivity levels affect component handling?

A: The FPC401RHUT carries MSL 2 (1 Year), requiring storage in controlled humidity environments with a one-year shelf life from manufacturing. The ADP5585ACBZ-00-R7 offers MSL 1 (Unlimited), eliminating time-based storage constraints. The TW3801-TC1-CR requires MSL 3 compliance, limiting storage to 168 hours in uncontrolled conditions before baking is required.

Q: Are all substitutes REACH and ECCN compliant?

A: All three parts maintain REACH Unaffected status and EAR99 ECCN classification, ensuring consistent regulatory compliance across substitute selections.

Q: What interface protocol differences exist between substitutes?

A: The FPC401RHUT and ADP5585ACBZ-00-R7 both support I2C communication. The TW3801-TC1-CR implements MII and RMII protocols for network interface applications. Protocol selection determines functional compatibility with existing system architecture.