PCA9548AD,112 Equivalent & Substitute Parts

Part Overview

The PCA9548AD,112 is a translating switch interface IC manufactured by NXP USA Inc., designed for I2C and SMBus applications. This 24-SOIC package component operates across dual voltage ranges (2.3V ~ 3.6V and 4.5V ~ 5.5V) and is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing system maintenance, redesigns, and production continuity.

Substiute Parts

PCA9548AD,112

NXP USA Inc.In Stock: 767PCA9548AD,112 Datasheet

Current PartRFQ

PCA9548ADW

Texas InstrumentsIn Stock: 60415PCA9548ADW Datasheet

DirectRFQ

PCA9548ADWR

Texas InstrumentsIn Stock: 10347PCA9548ADWR Datasheet

DirectRFQ

ADN8102ACPZ-R7

Analog Devices Inc.In Stock: 1236ADN8102ACPZ-R7 Datasheet

MFR RecommendedRFQ

Z8523320ASG

ZilogIn Stock: 760Z8523320ASG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PCA9548AD,112 are identified based on the following critical parameters:

Primary Substitution Criteria:

• Interface protocol compatibility (I2C, SMBus)
• Package type (24-SOIC form factor)
• Voltage supply range overlap or compatibility
• Surface mount mounting type
• RoHS3 compliance status

Substitution Groups:

Group 1: Direct Package & Protocol Match (24-SOIC) Parts PCA9548ADW and PCA9548ADWR maintain identical package geometry (24-SOIC, 0.295" width), interface protocols (I2C, SMBus), and mounting type. Both support the extended voltage range of 2.3V ~ 5.5V, encompassing the original part's dual voltage specifications. These represent the closest functional equivalents.

Group 2: Alternative Package Formats Parts ADN8102ACPZ-R7 (64-LFCSP-VQ) and Z8523320ASG (44-LQFP) provide interface functionality but utilize different package geometries. ADN8102ACPZ-R7 operates at 1.8V ~ 3.3V with I2C support. Z8523320ASG operates at 4.5V ~ 5.5V. These require PCB layout modifications and are suitable only when package constraints permit redesign.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (No PCB Redesign): PCA9548ADW is the preferred substitute. It maintains identical 24-SOIC package geometry, supports both I2C and SMBus protocols, and extends voltage compatibility to 2.3V ~ 5.5V. The part carries Last Time Buy status, indicating limited future availability. PCA9548ADWR provides equivalent functionality with identical electrical specifications but is also classified as obsolete.

For New Designs or Redesign Scenarios: ADN8102ACPZ-R7 and Z8523320ASG are active products suitable for applications where package redesign is feasible. ADN8102ACPZ-R7 operates at lower voltage (1.8V ~ 3.3V) and requires 64-pin layout accommodation. Z8523320ASG operates at 4.5V ~ 5.5V and requires 44-pin layout accommodation. Both carry higher moisture sensitivity levels (MSL 3) compared to the original part (MSL 1).

Compliance Considerations: All substitute parts maintain ROHS3 compliance and REACH unaffected status, matching the original part's regulatory standing.

Frequently Asked Questions (FAQ)

Q: Can PCA9548ADW be used as a direct drop-in replacement for PCA9548AD,112? A: Yes. Both parts use identical 24-SOIC package geometry with 0.295" width and 7.50mm dimensions. Electrical pinout compatibility and I2C/SMBus protocol support enable direct PCB substitution without layout modifications.

Q: What is the voltage compatibility difference between the original part and PCA9548ADW? A: The original PCA9548AD,112 operates at 2.3V ~ 3.6V and 4.5V ~ 5.5V (dual ranges). PCA9548ADW consolidates this to a single continuous range of 2.3V ~ 5.5V, which encompasses both original specifications and provides broader operational flexibility.

Q: Why are ADN8102ACPZ-R7 and Z8523320ASG listed as substitutes if they use different packages? A: These parts provide interface functionality for applications where PCB redesign is acceptable. They are listed as manufacturer-recommended alternatives but require layout modifications due to different pin counts and package formats.

Q: What is the significance of the MSL rating difference? A: The original part has MSL 1 (unlimited moisture exposure tolerance), while ADN8102ACPZ-R7 and Z8523320ASG have MSL 3 (168-hour maximum exposure). This affects storage and handling requirements. MSL 3 components require controlled humidity environments and have stricter shelf-life limitations.

Q: Are all substitute parts currently available? A: PCA9548ADW carries Last Time Buy status, indicating limited future availability. PCA9548ADWR is obsolete. ADN8102ACPZ-R7 and Z8523320ASG are active products with ongoing availability.

Q: Do all substitutes support both I2C and SMBus protocols? A: PCA9548ADW and PCA9548ADWR support both I2C and SMBus. ADN8102ACPZ-R7 supports I2C only. Z8523320ASG interface protocol is not specified in available documentation.