PCA9546ADT Equivalent & Substitute Parts

Part Overview

The PCA9546ADT 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 16-SOIC package. The PCA9546ADT is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PCA9546ADT

Texas InstrumentsIn Stock: 1189PCA9546ADT Datasheet

Current PartRFQ

PCA9546AD,118

NXP USA Inc.In Stock: 3112PCA9546AD,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA9546ADT is determined by strict alignment of the following electrical and mechanical parameters:

• Interface Protocol: I2C and SMBus compatibility
• Supply Voltage Range: 2.3V to 5.5V operation
• Package Type: 16-SOIC form factor with 0.154" width (3.90mm)
• Mounting Configuration: Surface mount technology
• Base Product Number: PCA9546 series designation
• Regulatory Compliance: ROHS3 compliance and REACH unaffected status

The substitute part PCA9546AD,118 meets all these criteria and is manufactured by NXP USA Inc., maintaining functional and physical compatibility with the original Texas Instruments component.

Parameter Comparison

Engineering Selection Recommendations

The PCA9546AD,118 manufactured by NXP USA Inc. is the designated substitute for the obsolete PCA9546ADT. This substitution is supported by:

• Identical electrical specifications across all critical parameters including supply voltage range and interface protocols
• Matching physical package dimensions and surface mount configuration
• Active product status ensuring continued availability and supply chain reliability
• Full compliance with ROHS3 and REACH regulatory requirements
• Equivalent moisture sensitivity classification and handling requirements

The transition from the obsolete Texas Instruments component to the active NXP USA Inc. equivalent ensures long-term component availability and manufacturing continuity.

Frequently Asked Questions (FAQ)

Q: Can the PCA9546AD,118 be used as a direct replacement for the PCA9546ADT?

A: Yes. Both components share identical electrical specifications, supply voltage range, interface protocols, and package dimensions. The PCA9546AD,118 is the manufacturer-recommended substitute.

Q: Are there any differences in package handling between these components?

A: Both components have identical moisture sensitivity levels (MSL 1 - Unlimited), requiring the same storage and handling procedures.

Q: What is the primary advantage of switching to the PCA9546AD,118?

A: The PCA9546AD,118 maintains active product status, ensuring reliable long-term availability and supply chain support compared to the obsolete PCA9546ADT.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the PCA9546ADT and PCA9546AD,118 are ROHS3 compliant, REACH unaffected, and classified under the same ECCN and HTSUS codes.

Q: Are there any circuit design modifications required when substituting these components?

A: No circuit modifications are required. The electrical and mechanical compatibility between these components allows for direct substitution in existing designs.