PI4IOE5V9557LE Equivalent & Substitute Parts

Part Overview

The PI4IOE5V9557LE is an 8-channel I/O expander IC designed for I2C communication at 400 kHz, manufactured by Diodes Incorporated. This device operates across a wide supply voltage range of 2.3V to 5.5V and is housed in a 16-TSSOP surface mount package. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

PI4IOE5V9557LE

Diodes IncorporatedIn Stock: 952PI4IOE5V9557LE Datasheet

Current PartRFQ

PI4IOE5V9557LEX

Diodes IncorporatedIn Stock: 5640PI4IOE5V9557LEX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the PI4IOE5V9557LE is determined by strict equivalence across the following critical parameters:

• I/O Channel Count: 8 channels (non-negotiable for functional compatibility)
• Interface Protocol: I2C at 400 kHz (determines communication compatibility)
• Supply Voltage Range: 2.3V ~ 5.5V (ensures operation in target power domains)
• Operating Temperature Range: -40°C ~ 85°C (defines environmental suitability)
• Package Footprint: 16-TSSOP with identical physical dimensions (required for PCB layout compatibility)
• Compliance Standards: ROHS3 Compliant, REACH Unaffected (regulatory alignment)

The PI4IOE5V9557LEX meets all these criteria and is classified as an active product, making it a direct functional equivalent suitable for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The PI4IOE5V9557LEX is the direct substitute for the obsolete PI4IOE5V9557LE. Both parts share identical electrical specifications, package geometry, and compliance certifications. The primary distinction is product status: the PI4IOE5V9557LEX is actively manufactured and stocked, while the original part is obsolete.

For new designs and ongoing production support, the PI4IOE5V9557LEX should be selected. The active product status ensures long-term availability and supply chain continuity. Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications.

Frequently Asked Questions (FAQ)

Q: Can the PI4IOE5V9557LEX be used as a direct replacement for the PI4IOE5V9557LE?

A: Yes. Both parts are electrically and mechanically identical. The PI4IOE5V9557LEX is the active equivalent and should be used for all new applications and production runs.

Q: Are there any differences in pin configuration or package dimensions?

A: No. Both parts use the 16-TSSOP package with identical pin assignments and physical dimensions (0.173" width, 4.40mm). PCB layouts require no modification.

Q: What is the difference between the two part numbers?

A: The suffix "X" in PI4IOE5V9557LEX indicates the active production variant. The original PI4IOE5V9557LE is obsolete. The base product number is PI4IOE5 for both variants.

Q: Are compliance certifications identical?

A: Yes. Both parts are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited).

Q: What packaging options are available for the substitute part?

A: The PI4IOE5V9557LEX is available in Cut Tape (CT) packaging. Verify packaging requirements for your procurement process.

Q: Can I use this part in applications requiring -40°C to 85°C operation?

A: Yes. Both the original and substitute parts are rated for the full -40°C to 85°C operating temperature range.