PCA9534ADGVR Equivalent & Substitute Parts

Part Overview

The PCA9534ADGVR is an 8-bit I/O expander designed for I2C and SMBus communication at 400 kHz. This device is classified as Last Time Buy, indicating discontinued production with limited inventory availability. Finding equivalent substitute parts is necessary to ensure design continuity and long-term component sourcing for new production runs or design revisions.

Substiute Parts

PCA9534ADGVR

Texas InstrumentsIn Stock: 2280PCA9534ADGVR Datasheet

Current PartRFQ

TCA9534APWR

Texas InstrumentsIn Stock: 2376TCA9534APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCA9534ADGVR is determined by the following critical parameters:

• I/O Count: 8-bit configuration required
• Communication Protocol: I2C interface at 400 kHz minimum
• Package Footprint: 16-pin TFSOP or compatible 16-pin surface mount package with 4.40mm width
• Voltage Compatibility: Supply voltage range must accommodate system requirements
• Output Configuration: Push-Pull output type
• Compliance: RoHS3 compliance and surface mount technology

The TCA9534APWR meets these substitution criteria as a functionally equivalent alternative from the same manufacturer with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The TCA9534APWR is the recommended substitute for the PCA9534ADGVR based on the following factors:

• Product Status: The TCA9534APWR maintains Active status, ensuring continued availability and long-term supply chain reliability compared to the Last Time Buy status of the PCA9534ADGVR.
• Functional Equivalence: Both devices provide 8-bit I/O expansion with identical I2C 400 kHz operation and matching temperature specifications.
• Compliance Alignment: Both parts maintain ROHS3 compliance and identical regulatory classifications (ECCN: EAR99, HTSUS: 8542.39.0001).
• Voltage Compatibility: The TCA9534APWR supports an extended lower voltage range (1.65V minimum) while maintaining the same 5.5V maximum, providing greater design flexibility.
• Package Compatibility: Both devices use 16-pin surface mount packages with identical 4.40mm width, supporting direct PCB layout compatibility with minimal redesign.

Frequently Asked Questions (FAQ)

Q: Can the TCA9534APWR directly replace the PCA9534ADGVR on existing PCBs?

A: Yes. Both devices use 16-pin surface mount packages with identical 4.40mm width and pin configurations. The TCA9534APWR is a direct functional substitute with compatible electrical specifications.

Q: What is the difference between 16-TFSOP and 16-TSSOP packaging?

A: Both are 16-pin thin shrink small outline packages with 4.40mm width. The TFSOP (Thin Flat Small Outline Package) and TSSOP (Thin Shrink Small Outline Package) designations represent equivalent package families suitable for the same PCB footprints.

Q: Does the TCA9534APWR support SMBus protocol like the PCA9534ADGVR?

A: The TCA9534APWR is specified for I2C interface. I2C and SMBus are compatible protocols at the 400 kHz clock frequency, allowing the TCA9534APWR to operate in SMBus-based systems.

Q: Are there voltage supply differences between these parts?

A: The TCA9534APWR supports a lower minimum voltage (1.65V versus 2.3V). Both devices support the same 5.5V maximum. Systems designed for the PCA9534ADGVR voltage range will operate with the TCA9534APWR without modification.

Q: What is the inventory status for these parts?

A: The PCA9534ADGVR is Last Time Buy with 2222 units in stock. The TCA9534APWR is Active status with 2272 units available, providing reliable long-term sourcing for new designs.