AT28HC64B-90SUAlternatives & Equivalent Parts
About AT28HC64B-90SU
AT28HC64B-90SU is a Integrated Circuit component manufactured by Microchip. It comes in a Small Outline Packages package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | AT28HC64B-90SUSource | AT28HC64B-70SU | AT28HC64B-12SU | AT28HC64B-70SU-T | AT28HC64BF-12SU |
|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip | Microchip |
| Package Type | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 28 | 28 | 28 | 28 | 28 |
| Temperature Range | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $3.9700 | $5.5740 | $5.2400 | $5.6658 | $3.5700 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE |
| Electrical Parameters | |||||
| Pbfree Code | Yes | Yes | Yes | — | Yes |
| Manufacturer Package Code | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 | SOIC-28 |
| Factory Lead Time | 8 Weeks | 8 Weeks | 8 Weeks | 8 Weeks | 8 Weeks |
| YTEOL | 13 | 14 | 14 | 14 | 14 |
| Access Time-Max | 90 ns | 70 ns | 120 ns | 70 ns | 120 ns |
| Command User Interface | NO | NO | NO | NO | NO |
| Data Polling | YES | YES | YES | YES | YES |
| Data Retention Time-Min | 10 | 10 | 10 | 10 | 10 |
| Endurance | 100000 Write/Erase Cycles | 100000 Write/Erase Cycles | 100000 Write/Erase Cycles | 100000 Write/Erase Cycles | 100000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G28 | R-PDSO-G28 | R-PDSO-G28 | R-PDSO-G28 | R-PDSO-G28 |
| JESD-609 Code | e3 | e3 | e3 | e3 | e3 |
| Memory Density | 65536 bit | 65536 bit | 65536 bit | 65536 bit | 65536 bit |
| Memory IC Type | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Memory Width | 8 | 8 | 8 | 8 | 8 |
| Number of Functions | 1 | 1 | 1 | 1 | 1 |
| Number of Ports | 1 | 1 | 1 | 1 | 1 |
| Number of Words | 8192 words | 8192 words | 8192 words | 8192 words | 8192 words |
| Number of Words Code | 8000 | 8000 | 8000 | 8000 | 8000 |
| Operating Mode | ASYNCHRONOUS | ASYNCHRONOUS | ASYNCHRONOUS | ASYNCHRONOUS | ASYNCHRONOUS |
| Organization | 8KX8 | 8KX8 | 8KX8 | 8KX8 | 8KX8 |
| Output Characteristics | 3-STATE | 3-STATE | 3-STATE | 3-STATE | 3-STATE |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP28,.4 | SOP28,.4 | SOP28,.4 | SOP28,.4 | SOP28,.4 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE | SMALL OUTLINE |
| Page Size | 64 words | 64 words | 64 words | 64 words | 64 words |
| Parallel/Serial | PARALLEL | PARALLEL | PARALLEL | PARALLEL | PARALLEL |
| Peak Reflow Temperature (Cel) | 260 | 260 | 260 | 260 | 260 |
| Programming Voltage | 5 V | 5 V | 5 V | 5 V | 5 V |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | — | Not Qualified |
| Standby Current-Max | 0.0001 A | 0.0001 A | 0.0001 A | 0.0001 A | 0.0001 A |
| Supply Current-Max | 0.04 mA | 0.04 mA | 0.04 mA | 0.04 mA | 0.04 mA |
| Supply Voltage-Max (Vsup) | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min (Vsup) | 4.5 V | 4.5 V | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage-Nom (Vsup) | 5 V | 5 V | 5 V | 5 V | 5 V |
| Surface Mount | YES | YES | YES | YES | YES |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | GULL WING | GULL WING | GULL WING | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 | 30 | 30 | 30 | 30 |
| Toggle Bit | YES | YES | YES | YES | YES |
| Write Cycle Time-Max (tWC) | 10 ms | 10 ms | 10 ms | 10 ms | 2 ms |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Why Look for Alternatives?
Finding alternatives for AT28HC64B-90SU is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating AT28HC64B-90SU replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to AT28HC64B-90SU?
Known equivalents for AT28HC64B-90SU include AT28HC64B-70SU, AT28HC64B-12SU, AT28HC64B-70SU-T. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of AT28HC64B-90SU?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify AT28HC64B-90SU alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.