What is a cross-reference page for PCA9554DBR?
This page groups mapped replacement options for PCA9554DBR so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
PCA9554DBR replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for PCA9554DBR, then verify package, specifications, and application fit before approval.
Compare PCA9554DBR against mapped replacement options
Review package, lifecycle, stock, and MOQ in one view
Move from engineering screening to RFQ without leaving the page
No mapped replacement parts yet
This product currently does not show a published cross-reference list. Use RFQ support if your team needs an alternative part review.
Specification view
Parameter Comparison Chart
A side-by-side view of the source part and its mapped alternatives so buyers and engineers can screen package, availability, lifecycle, and key descriptors before RFQ.
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The left column stays visible so buyers can keep the spec label in view while scanning multiple alternatives.
| Parameter Comparison Chart | Current part PCA9554DBR Texas Instruments |
|---|---|
| Part Number | PCA9554DBR |
| Manufacturer | Texas Instruments |
| Category | Integrated Circuits (ICs) |
| Subcategory | Interface - I/O Expanders |
| Package | 16-SSOP |
| Series | PCA9554 |
| Key Attributes | - |
| Description | 8-bit I2C/SMBus I/O expander in 16-SSOP used as a P2P candidate. |
| Lifecycle | - |
| Stock | 30,000 |
| Available | 20,000 |
| Min Order | 1 |
| Datasheet | Available |
| Function | 8-bit I2C/SMBus GPIO expander |
| Number of I/O | 8 |
| Manufacturer | Texas Instruments |
| Package / Case | 16-SSOP |
| Clock Frequency | 400 kHz |
| Supply Voltage | 2.3 V to 5.5 V |
| Interface | I2C / SMBus |
| Replacement Role | P2P review candidate |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing PCA9554DBR replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for PCA9554DBR?
Not automatically. Cross-reference mapping helps shortlist candidates, but package, electrical behavior, qualification scope, and approval rules still need to be checked before release.
Which parameters should teams compare first for PCA9554DBR alternatives?
Start with package, series, key attributes, lifecycle status, stock position, datasheet access, and the mapped pin-to-pin or cross-reference note. Then confirm application-specific requirements in the datasheet and RFQ stage.
Can I request a quote for an alternative to PCA9554DBR?
Yes. Use the product links or RFQ actions on this page to request pricing, availability, documentation, and sourcing support for any listed alternative part.
Is PCA9554DBR obsolete, and what replacement should buyers review first?
Check the lifecycle row on this page first. If buyers need a fast starting point, the strongest mapped replacement currently surfaced here is , followed by the other alternatives shown in the comparison table.
Engineering support
Need help validating the replacement path?
If your team is unsure whether a mapped alternative to PCA9554DBR from Texas Instruments is really usable, contact us for help on package fit, pin compatibility, key parameter gaps, and qualification-facing review questions.
Contact a hardware engineer
Email our engineering support contact at [email protected], or use the contact page if the question should be routed across sourcing, engineering, and support.
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Package and pin compatibility
Review whether the alternate path looks credible from package, footprint, and pin-level perspectives.
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Parameter and function gaps
Surface the electrical, interface, or application-fit questions that still need confirmation before approval.
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Qualification and approval prep
Organize the documentation, datasheet evidence, and validation checkpoints your internal team may still require.