PCA9534ARGVR Equivalent & Substitute Parts

Part Overview

The PCA9534ARGVR is an 8-bit I/O Expander with I2C and SMBus interface operating at 400 kHz, manufactured by Texas Instruments in a 16-VQFN package with exposed pad. This part is classified as Obsolete, making substitute components necessary for new designs and ongoing production requirements. The device provides push-pull output configuration with interrupt output capability and power-on reset (POR) feature, suitable for applications requiring expanded I/O capabilities in space-constrained environments.

Substiute Parts

PCA9534ARGVR

Texas InstrumentsIn Stock: 10252PCA9534ARGVR Datasheet

Current PartRFQ

TCA9534APWR

Texas InstrumentsIn Stock: 2376TCA9534APWR Datasheet

MFR RecommendedRFQ

PCA9534BS,118

NXP USA Inc.In Stock: 6216PCA9534BS,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PCA9534ARGVR is determined by the following critical parameters:

Functional Equivalence Criteria:

• 8-bit I/O expansion capability
• I2C interface at 400 kHz clock frequency
• Push-pull output configuration
• Interrupt output functionality
• Operating temperature range -40°C ~ 85°C
• Supply voltage compatibility within 2.3V ~ 5.5V range

Identified Substitute Parts:

1. PCA9534BS,118 (NXP USA Inc.) – Direct functional equivalent with identical electrical specifications and same package family (16-HVQFN). Active product status with improved moisture sensitivity rating (MSL 1, Unlimited vs. MSL 2, 1 Year).

2. TCA9534APWR (Texas Instruments) – Functional equivalent with identical I/O count, interface type, and clock frequency. Different package format (16-TSSOP vs. 16-VQFN) requires PCB layout modification. Extended supply voltage range (1.65V ~ 5.5V) provides broader compatibility. Active product status with superior moisture sensitivity rating (MSL 1, Unlimited).

Parameter Comparison

Engineering Selection Recommendations

PCA9534BS,118 (NXP USA Inc.) is the preferred substitute for direct replacement applications. This part maintains identical electrical specifications, supply voltage range, and output current ratings as the PCA9534ARGVR. The 16-HVQFN package is mechanically compatible with the original 16-VQFN footprint, eliminating PCB redesign requirements. Active product status ensures long-term availability and supply chain stability. Improved moisture sensitivity rating (MSL 1, Unlimited) provides superior reliability compared to the obsolete original part.

TCA9534APWR (Texas Instruments) serves as an alternative for applications where extended supply voltage range (1.65V ~ 5.5V) is beneficial. This part requires PCB layout modification due to different package format (16-TSSOP vs. 16-VQFN). Active product status and superior moisture sensitivity rating (MSL 1, Unlimited) support long-term production viability. Selection of this substitute is appropriate when package change is acceptable and lower minimum supply voltage operation is required.

Both substitute parts maintain ROHS3 compliance and EAR99 export classification consistent with the original part.

Frequently Asked Questions (FAQ)

Q: Can PCA9534BS,118 be used as a direct drop-in replacement for PCA9534ARGVR?

A: Yes. The PCA9534BS,118 maintains identical electrical specifications, supply voltage range (2.3V ~ 5.5V), output current ratings (10mA, 25mA), and package footprint compatibility (16-HVQFN vs. 16-VQFN). No circuit modifications are required.

Q: What is the primary difference between PCA9534BS,118 and TCA9534APWR?

A: The primary difference is package format. PCA9534BS,118 uses 16-HVQFN (4x4), compatible with the original PCA9534ARGVR footprint. TCA9534APWR uses 16-TSSOP, requiring PCB redesign. TCA9534APWR offers extended supply voltage range (1.65V ~ 5.5V) versus 2.3V ~ 5.5V for both PCA9534 variants.

Q: Why is the PCA9534ARGVR classified as Obsolete?

A: Product status reflects manufacturer discontinuation. Active substitute parts (PCA9534BS,118 and TCA9534APWR) provide equivalent functionality with improved availability and moisture sensitivity ratings.

Q: Are all three parts ROHS3 compliant?

A: Yes. PCA9534ARGVR, PCA9534BS,118, and TCA9534APWR are all ROHS3 compliant and REACH unaffected.

Q: What is the significance of Moisture Sensitivity Level (MSL) differences?

A: MSL rating indicates moisture absorption limits and shelf life. PCA9534ARGVR has MSL 2 (1 Year shelf life), while both substitutes have MSL 1 (Unlimited shelf life). Higher MSL ratings provide extended storage capability and reduced risk of moisture-related failures during assembly.

Q: Does TCA9534APWR support SMBus protocol?

A: TCA9534APWR supports I2C interface at 400 kHz. SMBus support is not specified for this part, unlike PCA9534ARGVR and PCA9534BS,118 which explicitly support both I2C and SMBus protocols.

Q: Can these parts be used interchangeably in existing designs?

A: PCA9534BS,118 can be used interchangeably without design changes. TCA9534APWR requires PCB layout modification due to package format difference (16-TSSOP vs. 16-VQFN), though electrical functionality remains equivalent.