PCA9548ABSHP Equivalent & Substitute Parts

Part Overview

The PCA9548ABSHP is an active translating switch interface IC manufactured by NXP Semiconductors, designed for I2C and SMBus applications. This 24-pin HVQFN surface mount component operates across dual voltage ranges (2.3V–3.6V and 4.5V–5.5V) and is currently in active production status. Finding equivalent or substitute parts may be necessary due to inventory constraints, lead time requirements, or design flexibility needs in system integration.

Substiute Parts

PCA9548ABSHP

NXP SemiconductorsIn Stock: 997PCA9548ABSHP Datasheet

Current PartRFQ

TCA9548ARGER

Texas InstrumentsIn Stock: 28623TCA9548ARGER Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PCA9548ABSHP is determined by the following critical parameters:

• Package Compatibility: Both main and substitute parts must use the 24-VFQFN Exposed Pad package in 4x4 form factor to ensure PCB footprint compatibility and reflow soldering process alignment.
• Interface Protocol: I2C and SMBus compatibility is mandatory for system-level integration without firmware or hardware redesign.
• Voltage Supply Range: The substitute must operate within or encompass the supply voltage range of the main part (2.3V–3.6V and 4.5V–5.5V).
• Mounting Type: Surface mount technology must be maintained for manufacturing consistency.
• Compliance Standards: RoHS3 compliance and REACH unaffected status ensure regulatory alignment across supply chains.

The TCA9548ARGER from Texas Instruments qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the PCA9548ABSHP and TCA9548ARGER maintain active product status and full RoHS3 compliance, ensuring long-term availability and regulatory conformance. The TCA9548ARGER provides an extended supply voltage range (1.65V–5.5V) that encompasses the PCA9548ABSHP operating window, offering greater design flexibility for multi-voltage applications. The MSL rating difference (MSL 1 versus MSL 2) reflects different moisture sensitivity classifications; the TCA9548ARGER requires controlled storage conditions (1 year shelf life) compared to unlimited storage for the PCA9548ABSHP. Both components share identical package geometry and surface mount characteristics, enabling direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can the TCA9548ARGER replace the PCA9548ABSHP in existing designs?

A: Yes. Both components use the 24-VFQFN Exposed Pad package in 4x4 form factor with identical pinout compatibility. The TCA9548ARGER's extended voltage range (1.65V–5.5V) fully encompasses the PCA9548ABSHP operating range, ensuring functional equivalence in I2C and SMBus applications.

Q: What is the impact of different MSL ratings?

A: The PCA9548ABSHP (MSL 1) permits unlimited shelf storage without moisture bake-out procedures. The TCA9548ARGER (MSL 2) requires storage in controlled humidity conditions with a 1-year shelf life limit. This affects component handling and inventory management but does not impact in-circuit performance.

Q: Are there packaging differences between these parts?

A: Both parts use the 24-VFQFN Exposed Pad package. The supplier device package designation differs slightly (24-HVQFN versus 24-VQFN), but both refer to the same 4x4mm form factor with identical PCB footprint requirements.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the PCA9548ABSHP and TCA9548ARGER are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and end-of-life management.