What is a cross-reference page for CAT24C256HU4IGT3?
This page groups mapped replacement options for CAT24C256HU4IGT3 so buyers and engineers can compare alternatives before requesting a quote or approving a substitute.
Alternative part analysis
CAT24C256HU4IGT3 replacements, alternatives, and cross reference
Compare mapped replacement and alternative options for CAT24C256HU4IGT3, then verify package, specifications, and application fit before approval.
Compare CAT24C256HU4IGT3 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 CAT24C256HU4IGT3 ON Semiconductor |
|---|---|
| Part Number | CAT24C256HU4IGT3 |
| Manufacturer | ON Semiconductor |
| Category | Integrated Circuits (ICs) |
| Subcategory | Memory |
| Package | - |
| Series | - |
| Key Attributes | - |
| Description | IC EEPROM 256K I2C 1MHZ 8UDFN |
| Lifecycle | - |
| Stock | 109,558 |
| Available | 60,322 |
| Min Order | 1 |
| Datasheet | Available |
| Density | 256 kb |
| Power Supplies | 2/5V |
| Supply Voltage-Max (Vsup) | 5.5V |
| Voltage - Supply | 1.8V~5.5V |
| Data Retention Time-Min | 100 |
| I2C Control Byte | 1010DDDR |
| Serial Bus Type | I2C |
| Memory Size | 256Kb 32K x 8 |
| Access Time | 500ns |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| REACH SVHC | No SVHC |
| JESD-609 Code | e4 |
| HTSUS | 8542.32.0051 |
| Height Seated (Max) | 0.55mm |
| Part Status | Active |
| Lifecycle Status | ACTIVE (Last Updated: 4 days ago) |
| Published | 2008 |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
| Lead Free | Lead Free |
| Mounting Type | Surface Mount |
| Factory Lead Time | 7 Weeks |
| Packaging | Tape & Reel (TR) |
| Halogen Free | Halogen Free |
| Categories | Integrated Circuits (ICs) |
| Terminal Position | DUAL |
| Supply Voltage | 5V |
| Technology | CMOS |
| Terminal Pitch | 0.5mm |
| Operating Temperature | -40°C~85°C TA |
| Manufacturer | ON Semiconductor |
| Interface | 2-Wire, I2C, Serial |
| Contact Plating | Gold |
| Number of Functions | 1 |
| Nominal Supply Current | 3mA |
| Radiation Hardening | No |
| Mount | Surface Mount |
| Pbfree Code | yes |
| Number of Pins | 8 |
| Number of Terminations | 8 |
| Pin Count | 8 |
| Length | 3mm |
| Memory Type | Non-Volatile |
| Width | 2mm |
| Sub-Categories | Memory |
| Standby Current-Max | 0.000001A |
| Write Cycle Time-Max (tWC) | 5ms |
| Endurance | 1000000 Write/Erase Cycles |
| Memory Width | 8 |
| Write Cycle Time - Word, Page | 5ms |
| Memory Format | EEPROM |
| Package / Case | 8-UFDFN Exposed Pad |
| Memory Interface | I2C |
| Write Protection | HARDWARE |
| Additional Feature | 100 YEAR DATA RETENTION |
| Clock Frequency | 1MHz |
| Base Part Number | CAT24C256 |
| Manufacturer's Part No. | CAT24C256HU4IGT3 |
| Actions |
Cross-reference FAQ
Replacement Part Questions
Short answers for teams reviewing CAT24C256HU4IGT3 replacement and equivalent-part options.
Does a mapped alternative mean a guaranteed drop-in replacement for CAT24C256HU4IGT3?
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 CAT24C256HU4IGT3 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 CAT24C256HU4IGT3?
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 CAT24C256HU4IGT3 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 CAT24C256HU4IGT3 from ON Semiconductor 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.