PI4IOE5V9554LEX Equivalent & Substitute Parts

Part Overview

The PI4IOE5V9554LEX is an 8-channel I/O expander interface component manufactured by Diodes Incorporated, designed for I2C communication at 400 kHz. This device operates across a supply voltage range of 2.3V to 5.5V and supports interrupt output functionality. The component is currently in active product status with 142,600 units in stock.

Substitute parts are necessary when the primary component becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives that meet the same electrical and mechanical requirements.

Substiute Parts

PI4IOE5V9554LEX

Diodes IncorporatedIn Stock: 142674PI4IOE5V9554LEX Datasheet

Current PartRFQ

PCA8574PW,118

NXP USA Inc.In Stock: 3667PCA8574PW,118 Datasheet

MFR RecommendedRFQ

PCA9554BPWJ

NXP USA Inc.In Stock: 2493PCA9554BPWJ Datasheet

MFR RecommendedRFQ

PCA9554PW,112

NXP USA Inc.In Stock: 3383PCA9554PW,112 Datasheet

MFR RecommendedRFQ

PCA9554PW,118

NXP USA Inc.In Stock: 2765PCA9554PW,118 Datasheet

MFR RecommendedRFQ

PCA9554PW/Q900,118

NXP USA Inc.In Stock: 3405PCA9554PW/Q900,118 Datasheet

MFR RecommendedRFQ

PCA9654EDTR2G

onsemiIn Stock: 10226PCA9654EDTR2G Datasheet

MFR RecommendedRFQ

PCAL9554CPWJ

NXP USA Inc.In Stock: 732PCAL9554CPWJ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI4IOE5V9554LEX is determined by the following critical parameters:

Primary Substitution Criteria:

• Number of I/O channels: 8
• Interface protocol: I2C
• Clock frequency: 400 kHz minimum
• Package type: 16-TSSOP
• Mounting type: Surface Mount
• Interrupt output capability: Yes
• Supply voltage compatibility: 2.3V ~ 5.5V range or subset thereof
• Operating temperature range: -40°C ~ 85°C or wider

Acceptable Variations:

• Packaging format (Tape & Reel, Cut Tape, Tube) does not affect electrical compatibility
• Additional interface support (SMBus compatibility) does not prevent substitution
• Enhanced output type options (Open Drain, Push-Pull) are acceptable
• Higher current source/sink ratings are acceptable
• Wider operating temperature ranges are acceptable
• Lower clock frequencies (100 kHz) are not acceptable for direct substitution

Parameter Comparison

Engineering Selection Recommendations

Preferred Substitutes (Active Status):

PCA9554PW,118, PCA9554PW,112, PCA9554PW/Q900,118, and PCAL9554CPWJ are all manufactured by NXP USA Inc. and maintain active product status. These parts meet all electrical requirements of the PI4IOE5V9554LEX, including 8-channel I/O, 400 kHz I2C operation, and compatible supply voltage ranges. The primary distinction among these options is packaging format: Cut Tape & Digi-Reel, Tube, and Tape & Reel respectively. Selection should be based on manufacturing process requirements.

PCA8574PW,118 is also an active NXP product with identical electrical specifications to the PI4IOE5V9554LEX and represents a direct functional equivalent.

PCAL9554CPWJ offers extended supply voltage range (1.65V ~ 5.5V) and dual output type capability (Open Drain and Push-Pull), providing additional design flexibility while maintaining full compatibility.

Limited Substitution (Obsolete Status):

PCA9654EDTR2G, manufactured by onsemi, is listed as obsolete. While this part maintains 8-channel I/O and I2C interface capability, its 100 kHz clock frequency does not meet the 400 kHz requirement of the primary part. This component is not suitable for direct substitution in applications requiring 400 kHz operation.

Compliance Considerations:

All active substitute parts maintain ROHS3 compliance, REACH unaffected status, and MSL 1 rating, ensuring regulatory and environmental compatibility with the original component.

Frequently Asked Questions (FAQ)

Q: Can PCA9654EDTR2G be used as a substitute for PI4IOE5V9554LEX?

A: No. While PCA9654EDTR2G shares the same 8-channel I/O architecture and 16-TSSOP package, its 100 kHz clock frequency is incompatible with the 400 kHz I2C requirement of the PI4IOE5V9554LEX. Additionally, this part is in obsolete status.

Q: What is the difference between the various PCA9554 packaging options?

A: PCA9554PW,118 is supplied in Cut Tape & Digi-Reel format, PCA9554PW,112 is supplied in Tube format, and PCA9554PW/Q900,118 is supplied in Tape & Reel format. All three variants are electrically identical and differ only in packaging and handling format for manufacturing processes.

Q: Is PCAL9554CPWJ a better choice than PCA9554PW,118?

A: PCAL9554CPWJ offers a wider supply voltage range (1.65V ~ 5.5V versus 2.3V ~ 5.5V) and dual output type options (Open Drain and Push-Pull). Selection depends on whether your application requires these extended capabilities. Both parts are electrically compatible with the PI4IOE5V9554LEX.

Q: Why is PCA8574PW,118 listed as a substitute if it has different features?

A: PCA8574PW,118 meets all critical substitution parameters: 8 I/O channels, 400 kHz I2C operation, 2.3V ~ 5.5V supply range, -40°C ~ 85°C operating temperature, and 16-TSSOP package. The presence of additional features (POR, Push-Pull output type, specified current ratings) does not prevent substitution; it indicates enhanced capability.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original PI4IOE5V9554LEX component.

Q: What should I consider when selecting between active substitute options?

A: Primary considerations are packaging format (based on manufacturing process requirements) and supply voltage range (PCAL9554CPWJ offers extended range). All active substitutes maintain identical core functionality: 8-channel I/O, 400 kHz I2C operation, and compatible operating temperature ranges.