PCA9548ADGVR Equivalent & Substitute Parts

Part Overview

The PCA9548ADGVR is a translating switch interface IC manufactured by Texas Instruments, designed for I2C and SMBus applications. This component operates across a supply voltage range of 2.3V to 5.5V and is housed in a 24-TVSOP package for surface mount applications. The part is currently in Last Time Buy status, making identification of equivalent and substitute components essential for ongoing design support and procurement planning.

Substiute Parts

PCA9548ADGVR

Texas InstrumentsIn Stock: 3699PCA9548ADGVR Datasheet

Current PartRFQ

TCA9548APWR

Texas InstrumentsIn Stock: 202284TCA9548APWR Datasheet

MFR RecommendedRFQ

BU6521KV-E2

Rohm SemiconductorIn Stock: 2440BU6521KV-E2 Datasheet

MFR RecommendedRFQ

TW3801-TC1-CR

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

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCA9548ADGVR is determined by the following critical parameters:

• Interface Protocol: I2C and SMBus compatibility
• Package Type: 24-pin TFSOP/TSSOP form factor with 0.173" width and 4.40mm pitch
• Supply Voltage Range: Operating voltage compatibility within or overlapping the 2.3V to 5.5V specification
• Mounting Type: Surface mount configuration
• Compliance Standards: ROHS3 compliance and REACH unaffected status

The substitute parts listed below meet these core electrical and mechanical requirements, enabling direct or near-direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

TCA9548APWR is the primary substitute from Texas Instruments. Both components share the same base product number (TCA9548/PCA9548 family) and are manufactured by the same supplier. The TCA9548APWR operates at a lower minimum supply voltage (1.65V versus 2.3V) and is in Active product status with significantly higher inventory availability (202,230 units). The package footprint is compatible (24-TSSOP versus 24-TFSOP, both 0.173" width, 4.40mm pitch). Both maintain ROHS3 compliance and MSL 1 rating.

BU6521KV-E2 and TW3801-TC1-CR are listed as manufacturer-identified substitutes but present significant functional and package differences. BU6521KV-E2 is a video encoder IC in a 48-LQFP package, representing a different functional category. TW3801-TC1-CR is a security systems interface in a 100-TQFP package with higher moisture sensitivity (MSL 3). These parts should be evaluated only when application-specific requirements align with their specialized functions and package constraints.

Frequently Asked Questions (FAQ)

Q: Can TCA9548APWR directly replace PCA9548ADGVR in existing designs?

A: TCA9548APWR shares the same functional family and compatible package footprint (24-pin TSSOP/TFSOP, 0.173" width). The lower minimum supply voltage (1.65V) provides broader operating range compatibility. PCB layout and thermal considerations remain identical. Verification of firmware or software compatibility with the specific application is required.

Q: What is the significance of the package designation difference between TFSOP and TSSOP?

A: Both TFSOP (Thin Fine-Pitch Small Outline Package) and TSSOP (Thin Shrink Small Outline Package) are 24-pin packages with identical 0.173" width and 4.40mm pitch specifications. The designations reflect minor manufacturing process variations but are mechanically and electrically interchangeable for PCB assembly purposes.

Q: Why is BU6521KV-E2 listed as a substitute despite being a video encoder?

A: BU6521KV-E2 is included based on manufacturer-provided substitute data. However, this component serves a specialized video encoding function in camera applications and operates with dual supply voltages (analog and digital). Substitution is appropriate only when the application specifically requires video encoding functionality.

Q: What does MSL 3 (168 Hours) mean for TW3801-TC1-CR?

A: Moisture Sensitivity Level 3 indicates the component requires controlled storage conditions and has a 168-hour floor life after moisture exposure. This is more restrictive than MSL 1 (unlimited). Additional handling precautions and bake-out procedures may be necessary during assembly, increasing manufacturing complexity and cost.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (TCA9548APWR, BU6521KV-E2, and TW3801-TC1-CR) maintain ROHS3 compliance and REACH unaffected status, matching the environmental and regulatory requirements of the original PCA9548ADGVR.