PCA9548ADWG4 Equivalent & Substitute Parts

Part Overview

The PCA9548ADWG4 is a translating switch interface IC manufactured by Texas Instruments, designed for I2C and SMBus applications. It operates across a supply voltage range of 2.3V to 5.5V and is housed in a 24-SOIC package. The part is currently discontinued at DiGi Electronics, making identification of equivalent and substitute parts essential for ongoing system support and procurement planning.

Substiute Parts

PCA9548ADWG4

Texas InstrumentsIn Stock: 16445PCA9548ADWG4 Datasheet

Current PartRFQ

PCA9548AD,118

NXP USA Inc.In Stock: 2399PCA9548AD,118 Datasheet

DirectRFQ

PCA9548ADW

Texas InstrumentsIn Stock: 60415PCA9548ADW Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCA9548ADWG4 is determined by the following critical parameters:

• Base Product Number: All substitutes must share the PCA9548 base designation, ensuring functional equivalence in translating switch operation
• Package / Case: All substitutes must use the 24-SOIC (0.295", 7.50mm Width) package to ensure PCB compatibility and mounting consistency
• Interface Protocol: I2C and SMBus compatibility must be maintained across all substitutes
• Voltage Supply Range: Operating voltage specifications must be compatible with the system design
• RoHS and Compliance Status: All substitutes must maintain ROHS3 compliance and REACH unaffected status

Based on these parameters, two substitute parts are identified:

1. PCA9548AD,118 (NXP USA Inc.) - Direct manufacturer alternative with compatible package and protocols
2. PCA9548ADW (Texas Instruments) - Manufacturer-recommended alternative with extended inventory availability

Parameter Comparison

Engineering Selection Recommendations

PCA9548ADW is the primary recommended substitute. It is manufactured by Texas Instruments (original manufacturer of the main part), maintains identical voltage supply specifications (2.3V ~ 5.5V), and has the highest inventory availability (60400 Pcs). Although marked as Last Time Buy, this status indicates controlled availability rather than discontinuation, providing a stable procurement window. The part maintains full ROHS3 compliance and identical package specifications.

PCA9548AD,118 serves as a secondary alternative manufactured by NXP USA Inc. It maintains full functional compatibility and identical package specifications. However, its voltage supply range is specified as 2.3V ~ 3.6V and 4.5V ~ 5.5V, which excludes the 3.6V to 4.5V band present in the original specification. This voltage gap requires verification against system requirements before selection. Inventory availability is lower at 2300 Pcs, and the part is currently in Active status.

Frequently Asked Questions (FAQ)

Q: Can PCA9548AD,118 be used as a direct replacement for PCA9548ADWG4?

A: PCA9548AD,118 is functionally compatible and uses the identical 24-SOIC package. However, its voltage supply specification (2.3V ~ 3.6V, 4.5V ~ 5.5V) excludes the 3.6V to 4.5V operating range. Substitution is valid only if your system operates outside this excluded band.

Q: Why is PCA9548ADW recommended over PCA9548AD,118?

A: PCA9548ADW maintains the complete voltage supply range (2.3V ~ 5.5V) matching the original part, is manufactured by Texas Instruments, and has significantly higher inventory availability (60400 Pcs vs. 2300 Pcs).

Q: Are all substitutes in the same package?

A: Yes. All three parts use the 24-SOIC (0.295", 7.50mm Width) package, ensuring PCB footprint and mounting compatibility without redesign.

Q: What does "Last Time Buy" status mean for PCA9548ADW?

A: Last Time Buy indicates the manufacturer has announced end-of-life for this part number. Inventory is available for a defined period, but production will cease. This status provides a procurement window but requires planning for long-term alternatives.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All three parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

Q: Can I mix these parts in the same design?

A: PCA9548ADW and PCA9548ADWG4 are fully interchangeable. PCA9548AD,118 requires voltage range verification before use in mixed designs.