PCA9535PWR Equivalent & Substitute Parts

Part Overview

The PCA9535PWR is a 16-bit I/O expander with I2C and SMBus interface operating at 400 kHz, manufactured by Texas Instruments in a 24-TSSOP surface mount package. This device is classified as Not For New Designs, indicating it has been superseded in the manufacturer's product roadmap. Alternative components are necessary for new design implementations and long-term supply chain continuity.

Substiute Parts

PCA9535PWR

Texas InstrumentsIn Stock: 2069PCA9535PWR Datasheet

Current PartRFQ

TCA9535PWR

Texas InstrumentsIn Stock: 5506TCA9535PWR Datasheet

DirectRFQ

MAX7311AUG+

Analog Devices Inc./Maxim IntegratedIn Stock: 2171MAX7311AUG+ Datasheet

MFR RecommendedRFQ

MAX7312AUG+T

Analog Devices Inc./Maxim IntegratedIn Stock: 4753MAX7312AUG+T Datasheet

MFR RecommendedRFQ

PCA9535APW,118

NXP USA Inc.In Stock: 100216PCA9535APW,118 Datasheet

MFR RecommendedRFQ

PCA9535PW,118

NXP USA Inc.In Stock: 4174PCA9535PW,118 Datasheet

MFR RecommendedRFQ

PCA9555PW,118

NXP USA Inc.In Stock: 52925PCA9555PW,118 Datasheet

MFR RecommendedRFQ

PI4IOE5V9535LEX

Diodes IncorporatedIn Stock: 4165PI4IOE5V9535LEX Datasheet

MFR RecommendedRFQ

XRA1201IG24TR-F

MaxLinear, Inc.In Stock: 3673XRA1201IG24TR-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across the following criteria:

Primary Compatibility Parameters:

• Number of I/O: 16 (mandatory match)
• Interface: I2C, SMBus (mandatory match)
• Clock Frequency: 400 kHz (mandatory match)
• Package / Case: 24-TSSOP (mandatory match)
• Mounting Type: Surface Mount (mandatory match)

Secondary Compatibility Parameters:

• Voltage Supply Range: Must encompass or match the operating range
• Operating Temperature: Must encompass or match the operating range
• Output Type: Push-Pull (where specified)
• Interrupt Output: Yes (where specified)

Substitute parts are grouped into two categories: direct equivalents (identical parameter specifications) and functional equivalents (compatible parameters with extended or equivalent electrical characteristics).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Recommended for Pin-Compatible Replacement):

TCA9535PWR and PCA9535PW,118 are direct functional equivalents to PCA9535PWR. Both maintain identical I/O count, interface protocol, clock frequency, package, and output characteristics. TCA9535PWR offers extended lower voltage operation (1.65V minimum) and is in Active product status with higher inventory availability (5451 units). PCA9535PW,118 matches the original voltage specification (2.3V minimum) and maintains Active status.

Extended Temperature Range Alternative:

MAX7311AUG+ and MAX7312AUG+T provide identical core functionality with extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 85°C) and higher output current capability (31mA/43mA versus 10mA/25mA). These are suitable for applications requiring enhanced thermal performance or higher drive capability. Both are in Active product status.

Voltage-Constrained Applications:

XRA1201IG24TR-F operates within a narrower voltage range (1.65V ~ 3.6V) and is suitable only for low-voltage applications that do not exceed 3.6V supply. This part is in Active status but has limited inventory (3618 units).

Partial Specification Match:

PI4IOE5V9535LEX maintains core I/O and interface specifications but does not specify output type, current drive capability, or SMBus support. This part is suitable only where these unspecified parameters are not critical to system operation.

All substitute parts listed are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original component's compliance profile.

Frequently Asked Questions (FAQ)

Q: Can PCA9535APW,118 replace PCA9535PWR directly?

A: Yes. Both parts share identical I/O count (16), interface (I2C, SMBus), clock frequency (400 kHz), package (24-TSSOP), output type (Push-Pull), and current specifications (10mA, 25mA). PCA9535APW,118 has extended lower voltage operation (1.65V minimum) and is in Active product status with significantly higher inventory (100200 units).

Q: What is the difference between PCA9535PW,118 and PCA9555PW,118?

A: Both parts are functionally equivalent with identical electrical specifications. The primary difference is the base product number designation (PCA9535 versus PCA9555). Both maintain 16 I/O, I2C/SMBus interface, 400 kHz operation, and identical voltage/temperature ranges. PCA9555PW,118 has higher inventory availability (52826 units).

Q: Can MAX7311AUG+ be used in place of PCA9535PWR?

A: Yes, with design considerations. MAX7311AUG+ provides identical I/O count, interface, and clock frequency in the same 24-TSSOP package. It offers extended operating temperature (-40°C ~ 125°C) and higher output current (31mA/43mA). The voltage supply range (2V ~ 5.5V) is compatible with PCA9535PWR applications operating above 2V.

Q: Is XRA1201IG24TR-F suitable for all PCA9535PWR applications?

A: No. XRA1201IG24TR-F operates within a restricted voltage range (1.65V ~ 3.6V) and is suitable only for low-voltage applications not exceeding 3.6V supply. Output type and current drive specifications are not provided, limiting compatibility assessment.

Q: What packaging options are available for substitutes?

A: All listed substitutes maintain the 24-TSSOP surface mount package. Packaging format varies: most are supplied in Cut Tape (CT) & Digi-Reel format; MAX7311AUG+ is supplied in Tube; XRA1201IG24TR-F packaging is not specified. Verify packaging compatibility with procurement requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original PCA9535PWR compliance status. All carry MSL 1 (Unlimited) moisture sensitivity rating.