PI7C9X754FFE Equivalent & Substitute Parts

Part Overview

The PI7C9X754FFE is a quad UART bridge controller with RS485 protocol support and IRDA 1.1 standards compliance, manufactured by Diodes Incorporated. This interface IC operates in the 1.62V to 3.6V supply voltage range and is housed in an 80-LQFP (12x12) package. The product is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new design implementations.

Substiute Parts

PI7C9X754FFE

Diodes IncorporatedIn Stock: 868PI7C9X754FFE Datasheet

Current PartRFQ

PI7C9X754FCE

Diodes IncorporatedIn Stock: 765PI7C9X754FCE Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI7C9X754FFE is determined by strict alignment of the following electrical and mechanical parameters:

• Protocol: RS485
• Function: Controller
• Interface: UART
• Standards: IRDA 1.1
• Voltage - Supply: 1.62V ~ 3.6V
• Current - Supply: 10mA
• Operating Temperature: -40°C ~ 85°C
• Base Product Number: PI7C9X754
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)

The PI7C9X754FCE meets all electrical parameter requirements and shares the same base product number. The primary difference is the package configuration: 64-LQFP (10x10) versus the original 80-LQFP (12x12). This package variation is permissible for substitution when PCB layout and pin assignment compatibility can be accommodated in the target application.

Parameter Comparison

Engineering Selection Recommendations

The PI7C9X754FCE is the primary substitute for the obsolete PI7C9X754FFE. Both components maintain identical electrical specifications, supply voltage ranges, current consumption, and operating temperature ratings. Both are ROHS3 compliant and carry equivalent moisture sensitivity classifications.

The PI7C9X754FCE holds active product status, ensuring continued availability and manufacturing support. The package transition from 80-LQFP (12x12) to 64-LQFP (10x10) requires PCB redesign and pin mapping verification but does not introduce electrical incompatibility when properly implemented.

Frequently Asked Questions (FAQ)

Q: Can the PI7C9X754FCE directly replace the PI7C9X754FFE without PCB modification?

A: No. The package change from 80-LQFP to 64-LQFP requires PCB layout redesign and footprint modification. Pin assignments must be verified against both datasheets to ensure correct signal routing.

Q: Are the electrical specifications identical between these two parts?

A: Yes. Both components operate at 1.62V to 3.6V supply voltage, consume 10mA, support RS485 protocol with IRDA 1.1 standards, and function across the -40°C to 85°C temperature range.

Q: What is the significance of the product status change from Obsolete to Active?

A: The PI7C9X754FCE's active status indicates ongoing manufacturing and supplier support, ensuring long-term availability and consistent quality. The PI7C9X754FFE's obsolete status means production has ceased and inventory is limited.

Q: Are both parts RoHS compliant?

A: Yes. Both the PI7C9X754FFE and PI7C9X754FCE are ROHS3 compliant and carry identical moisture sensitivity levels of MSL 3 (168 Hours).

Q: What determines whether a substitute part is acceptable for this application?

A: Substitution is based on matching protocol (RS485), function (Controller), interface (UART), standards (IRDA 1.1), supply voltage range (1.62V ~ 3.6V), current consumption (10mA), operating temperature (-40°C ~ 85°C), and compliance certifications (ROHS3, MSL 3). Package differences are permissible when PCB design can accommodate the new footprint.