PCA9534PW,112 Equivalent & Substitute Parts

Part Overview

The PCA9534PW,112 is an 8-bit I/O expander with I2C and SMBus interface operating at 400 kHz, manufactured by NXP Semiconductors in a 16-TSSOP surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part provides push-pull output configuration with 10mA/25mA source/sink capability and power-on reset (POR) feature, suitable for applications requiring expanded I/O capabilities in embedded systems.

Substiute Parts

PCA9534PW,112

NXP SemiconductorsIn Stock: 2114PCA9534PW,112 Datasheet

Current PartRFQ

MAX7315AUE+

Analog Devices Inc./Maxim IntegratedIn Stock: 1621MAX7315AUE+ Datasheet

MFR RecommendedRFQ

PCA9534APWR

Texas InstrumentsIn Stock: 17321PCA9534APWR Datasheet

MFR RecommendedRFQ

PCA9534PWR

Texas InstrumentsIn Stock: 43410PCA9534PWR Datasheet

MFR RecommendedRFQ

TCA9534APWR

Texas InstrumentsIn Stock: 2376TCA9534APWR Datasheet

MFR RecommendedRFQ

TCA9534PWR

Texas InstrumentsIn Stock: 165243TCA9534PWR Datasheet

MFR RecommendedRFQ

TCA9554APWR

Texas InstrumentsIn Stock: 164732TCA9554APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters: 8-bit I/O count, I2C interface support, 400 kHz clock frequency, 16-TSSOP package format, surface mount configuration, and RoHS3 compliance. Substitute parts must maintain electrical compatibility within the specified voltage and temperature ranges while preserving functional equivalence for I/O expansion applications.

The substitute parts are grouped into two categories based on parameter alignment:

Category 1 - Full Parameter Match (PCA9534APWR, PCA9534PWR): Texas Instruments variants of the PCA9534 base product with identical electrical specifications, output type, and current ratings.

Category 2 - Extended Voltage Range (TCA9534APWR, TCA9534PWR, TCA9554APWR): Texas Instruments I/O expanders with broader supply voltage range (1.65V ~ 5.5V) and compatible core functionality, with TCA9554APWR offering SMBus support.

Category 3 - Alternative Manufacturer (MAX7315AUE+): Analog Devices/Maxim Integrated equivalent with open-drain output configuration and higher current capability (50mA), narrower voltage range (2V ~ 3.6V), and extended temperature range (-40°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement):

PCA9534APWR and PCA9534PWR are the preferred substitutes, offering identical electrical specifications and active product status from Texas Instruments. Both maintain the original voltage range (2.3V ~ 5.5V), temperature range (-40°C ~ 85°C), push-pull output configuration, and current ratings. The distinction between these variants is packaging format: PCA9534APWR is supplied in Cut Tape (CT) & Digi-Reel format with 17,262 units in stock, while PCA9534PWR is supplied in Tape & Reel (TR) format with 43,300 units in stock. Both are ROHS3 compliant and REACH unaffected.

Extended Voltage Range Alternatives:

TCA9554APWR provides the closest functional match with extended supply voltage range (1.65V ~ 5.5V), maintaining SMBus support, push-pull output, and identical current ratings. This part is suitable for applications requiring lower voltage operation. TCA9534PWR and TCA9534APWR offer similar voltage extension but without SMBus interface specification.

Alternative Manufacturer Option:

MAX7315AUE+ from Analog Devices/Maxim Integrated is functionally equivalent with SMBus support and identical I/O count and clock frequency. This part features open-drain output (versus push-pull), higher current capability (50mA), narrower voltage range (2V ~ 3.6V), and extended temperature range (-40°C ~ 125°C). Selection of this part requires verification of output type compatibility in the target application circuit.

All substitute parts maintain ROHS3 compliance, 16-TSSOP package format, and surface mount configuration.

Frequently Asked Questions (FAQ)

Q: Can PCA9534APWR and PCA9534PWR be used interchangeably with PCA9534PW,112?

A: Yes. Both parts are Texas Instruments variants of the PCA9534 base product with identical electrical specifications, voltage range, temperature range, output type, and current ratings. The difference is packaging format: PCA9534APWR uses Cut Tape & Digi-Reel format, while PCA9534PWR uses Tape & Reel format. Selection depends on procurement and assembly requirements.

Q: What is the key difference between TCA9554APWR and TCA9534PWR?

A: TCA9554APWR includes SMBus interface support and POR feature, matching the original PCA9534PW,112 specification. TCA9534PWR supports I2C interface only. Both offer extended voltage range (1.65V ~ 5.5V) compared to the original part (2.3V ~ 5.5V).

Q: Is MAX7315AUE+ a direct replacement?

A: MAX7315AUE+ is functionally equivalent for I/O expansion but differs in output type (open-drain versus push-pull) and current capability (50mA versus 10mA/25mA). Voltage range is narrower (2V ~ 3.6V). Application circuit compatibility must be verified before selection.

Q: Do all substitute parts maintain the same package footprint?

A: Yes. All substitute parts use 16-TSSOP (0.173", 4.40mm Width) surface mount package, ensuring PCB layout compatibility with the original PCA9534PW,112.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements equivalent to the original part.

Q: Which substitute part has the highest inventory availability?

A: TCA9534PWR has the highest inventory with 165,200 units in stock, followed by PCA9534PWR with 43,300 units. PCA9534APWR has 17,262 units available.