PCA9548APW Equivalent & Substitute Parts

Part Overview

The PCA9548APW is a translating switch interface IC manufactured by Texas Instruments, designed for I2C and SMBus applications. Packaged in 24-TSSOP form factor, this component operates across a 2.3V to 5.5V supply voltage range. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

PCA9548APW

Texas InstrumentsIn Stock: 45477PCA9548APW Datasheet

Current PartRFQ

TCA9548APWR

Texas InstrumentsIn Stock: 202284TCA9548APWR Datasheet

MFR RecommendedRFQ

PCA9548APW,118

NXP USA Inc.In Stock: 2000PCA9548APW,118 Datasheet

DirectRFQ

ADP5586ACBZ-00-R7

Analog Devices Inc.In Stock: 2175ADP5586ACBZ-00-R7 Datasheet

MFR RecommendedRFQ

CA91L862A-50IEV

Renesas Electronics CorporationIn Stock: 2188CA91L862A-50IEV Datasheet

MFR RecommendedRFQ

MAX14502AETL+

Analog Devices Inc./Maxim IntegratedIn Stock: 21264MAX14502AETL+ Datasheet

MFR RecommendedRFQ

TW3801-TC1-CR

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PCA9548APW is determined by the following critical parameters:

• Interface Protocol: I2C or SMBus compatibility
• Package Type: 24-TSSOP form factor with matching pin pitch (0.173", 4.40mm width)
• Voltage Supply Range: Overlap with 2.3V ~ 5.5V operating window
• Mounting Type: Surface mount configuration
• Compliance: ROHS3 compliance and MSL rating compatibility

The substitute parts listed below meet varying degrees of these criteria. Direct substitutes maintain identical or superior electrical specifications within the same package footprint. Functional alternatives provide equivalent interface capabilities but may require PCB layout adjustments due to different package geometries.

Parameter Comparison

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (24-TSSOP Package)

TCA9548APWR and PCA9548APW,118 are the primary candidates for direct replacement. Both maintain the 24-TSSOP package footprint, enabling drop-in PCB compatibility without layout modifications. TCA9548APWR offers extended lower voltage operation (1.65V minimum) compared to the original specification. PCA9548APW,118 from NXP maintains the original voltage range parameters and is currently in active production status with established supply chain availability.

Functional Alternatives (Different Package Geometries)

ADP5586ACBZ-00-R7, MAX14502AETL+, and TW3801-TC1-CR provide interface functionality suitable for I2C-based applications but require PCB redesign due to different package types. These alternatives are appropriate only when board layout modifications are feasible. ADP5586ACBZ-00-R7 and MAX14502AETL+ maintain MSL rating 1, while TW3801-TC1-CR carries MSL rating 3, requiring controlled moisture exposure during assembly.

All substitute options maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original component.

Frequently Asked Questions (FAQ)

Q: Can TCA9548APWR replace PCA9548APW in existing designs without PCB modification?

A: Yes. TCA9548APWR maintains identical 24-TSSOP package geometry and pin pitch, enabling direct PCB substitution. The extended lower voltage range (1.65V vs. 2.3V minimum) provides additional operational flexibility without compromising compatibility.

Q: What is the primary difference between PCA9548APW,118 and the original PCA9548APW?

A: PCA9548APW,118 is the NXP-manufactured variant maintaining equivalent electrical specifications and identical packaging. It serves as a direct functional replacement with current active production status and established inventory availability.

Q: Are ADP5586ACBZ-00-R7 and MAX14502AETL+ suitable for direct replacement?

A: These components provide I2C interface capability but employ different package geometries (16-WLCSP and 40-TQFN respectively). Direct PCB substitution is not possible; board redesign is required. Selection depends on application-specific space constraints and thermal requirements.

Q: What does MSL rating 3 on TW3801-TC1-CR indicate for assembly operations?

A: MSL rating 3 specifies a 168-hour moisture sensitivity limit. The component requires controlled humidity storage and handling during assembly processes. Standard MSL rating 1 components like TCA9548APWR and PCA9548APW,118 have unlimited moisture sensitivity tolerance, simplifying supply chain management.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original PCA9548APW specification.