PI4IOE5V9522UEX Equivalent & Substitute Parts

Part Overview

The PI4IOE5V9522UEX is an I/O Expander interface component manufactured by Diodes Incorporated, designed for I2C communication at 1 MHz with 8-MSOP-EP packaging. This part is classified as Obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and production continuity. The component features open drain output configuration and interrupt output capability, operating across a supply voltage range of 2.3V to 5.5V.

Substiute Parts

PI4IOE5V9522UEX

Diodes IncorporatedIn Stock: 30440PI4IOE5V9522UEX Datasheet

Current PartRFQ

PI4IOE5V9537UEX

Diodes IncorporatedIn Stock: 2272PI4IOE5V9537UEX Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PI4IOE5V9522UEX is determined by the following critical parameters:

• Interface protocol: I2C
• Clock frequency: 1 MHz
• Supply voltage range: 2.3V ~ 5.5V
• Package type: 8-MSOP-EP (8-TSSOP, 8-MSOP with exposed pad)
• Mounting configuration: Surface Mount
• Interrupt output capability: Present

The PI4IOE5V9537UEX qualifies as a direct substitute based on matching all core electrical and mechanical parameters. The primary distinction lies in output type configuration (Push-Pull versus Open Drain) and product status (Active versus Obsolete), with the substitute offering improved availability and active manufacturer support.

Parameter Comparison

Engineering Selection Recommendations

The PI4IOE5V9537UEX is the qualified substitute for the obsolete PI4IOE5V9522UEX. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The substitute part carries Active product status with established manufacturer support and documented supply chain availability (2220 Pcs in stock versus 30400 Pcs for the obsolete part).

The output type difference (Push-Pull in the substitute versus Open Drain in the main part) requires circuit-level evaluation. Applications utilizing open drain output characteristics for multi-master I2C configurations or specific pull-up resistor topologies must assess compatibility with push-pull output behavior. Both parts maintain identical I2C interface protocol, clock frequency, supply voltage range, and package footprint specifications.

Frequently Asked Questions (FAQ)

Q: Can PI4IOE5V9537UEX directly replace PI4IOE5V9522UEX in existing designs?

A: Physical and electrical compatibility exists for I2C protocol, clock frequency, supply voltage, and package footprint. The output type difference (Push-Pull versus Open Drain) requires circuit verification to confirm compatibility with existing pull-up resistor networks and multi-master configurations.

Q: What is the significance of the output type difference?

A: Open Drain output (PI4IOE5V9522UEX) requires external pull-up resistors and supports wired-AND logic for multi-master I2C systems. Push-Pull output (PI4IOE5V9537UEX) provides active high and low drive capability. Circuit topology must accommodate this distinction.

Q: Are both parts pin-compatible?

A: Both components utilize identical 8-MSOP-EP packaging with 0.118" width and 3.00mm dimensions, ensuring mechanical and pin-level compatibility for PCB assembly.

Q: What compliance certifications apply to the substitute part?

A: PI4IOE5V9537UEX maintains ROHS3 compliance and REACH unaffected status, matching the regulatory profile of the obsolete part.

Q: Why is the substitute part listed as Active status?

A: Active product status indicates ongoing manufacturer support, documented supply chain availability, and continued production. This contrasts with the Obsolete status of the original part, which has reached end-of-life.