25AA640A-I/SNAlternatives & Equivalent Parts
About 25AA640A-I/SN
25AA640A-I/SN 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 | 25AA640A-I/SNSource | 24LC256-I/SM | 24LC32AF-I/P | 24LC64-I/MS | 24LC64F-I/P | 24LC64T-I/OT | 24VL014H/SN | 24VL025T/OT | 25AA010A-I/P | 25AA020A-I/MS | 25AA640-I/SN |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip | Microchip |
| Package Type | Small Outline Packages | Small Outline Packages | Dual-In-Line Packages | Small Outline Packages | Dual-In-Line Packages | SOT23 (5-Pin) | Small Outline Packages | SOT23 (6-Pin) | Dual-In-Line Packages | Small Outline Packages | Small Outline Packages |
| Pin Count | 8 | 8 | 8 | 8 | 8 | 5 | 8 | 6 | 8 | 8 | 8 |
| 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 | -40.0°C ~ 85.0°C | -20.0°C ~ 85.0°C | -20.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C | -40.0°C ~ 85.0°C |
| Price | $0.4706 | $0.9061 | $0.4311 | $0.3050 | $0.4622 | $0.4036 | $0.4397 | $0.3680 | $0.4527 | $0.4540 | $0.7003 |
| Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | ACTIVE | NOT RECOMMENDED |
| Electrical Parameters | |||||||||||
| Pbfree Code | Yes | Yes | Yes | Yes | Yes | Yes | — | Yes | Yes | Yes | Yes |
| Manufacturer Package Code | SOIC-8 | SOIJ-8 | PDIP-8 | MSOP-8 | PDIP-8 | SOT-23-5 | SOIC-8 | SOT-23-6 | PDIP-8 | MSOP-8 | SOIC-8 |
| Factory Lead Time | 6 Weeks | 7 Weeks | 8 Weeks | 24 Weeks | 8 Weeks | 6 Weeks | 6 Weeks | 6 Weeks | 8 Weeks | 18 Weeks | 6 Weeks |
| YTEOL | 9 | 8 | 8 | 8 | 8 | 9 | 5 | 5 | 8 | 8 | 3 |
| Additional Feature | OPERATES WITH 1.8VMIN @ 3MHZ | — | — | — | — | — | 1.5V TO 1.8V @ 0.1MHz | 1.5V TO 1.8V @ 0.1MHz | ALSO OPERATES 1.8V TO 2.5V @3MHZ | — | — |
| Clock Frequency-Max (fCLK) | 10 MHz | 0.4 MHz | 0.4 MHz | 0.4 MHz | 0.4 MHz | 0.4 MHz | 0.4 MHz | 0.4 MHz | 10 MHz | 10 MHz | 1 MHz |
| Data Retention Time-Min | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 | 200 |
| Endurance | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles | 1000000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 | R-PDSO-G8 | R-PDIP-T8 | S-PDSO-G8 | R-PDIP-T8 | R-PDSO-G5 | R-PDSO-G8 | R-PDSO-G6 | R-PDIP-T8 | S-PDSO-G8 | R-PDSO-G8 |
| JESD-609 Code | e3 | e3 | e3 | e3 | e3 | e3 | e3 | e3 | e3 | e3 | e3 |
| Memory Density | 65536 bit | 262144 bit | 32768 bit | 65536 bit | 65536 bit | 65536 bit | 1024 bit | 2048 bit | 1024 bit | 2048 bit | 65536 bit |
| Memory IC Type | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM | EEPROM |
| Memory Width | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Number of Functions | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of Ports | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| Number of Words | 8192 words | 32768 words | 4096 words | 8192 words | 8192 words | 8192 words | 128 words | 256 words | 128 words | 256 words | 8192 words |
| Number of Words Code | 8000 | 32000 | 4000 | 8000 | 8000 | 8000 | 128 | 256 | 128 | 256 | 8000 |
| Operating Mode | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS | SYNCHRONOUS |
| Organization | 8KX8 | 32KX8 | 4KX8 | 8KX8 | 8KX8 | 8KX8 | 128X8 | 256X8 | 128X8 | 256X8 | 8KX8 |
| Output Characteristics | 3-STATE | OPEN-DRAIN | OPEN-DRAIN | OPEN-DRAIN | OPEN-DRAIN | OPEN-DRAIN | OPEN-DRAIN | OPEN-DRAIN | 3-STATE | — | — |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 | SOP8,.3 | DIP8,.3 | TSSOP8,.19 | DIP8,.3 | TSOP5/6,.11,37 | SOP8,.23 | TSOP6,.11,37 | DIP8,.3 | SOP8,.19 | SOP8,.23 |
| Package Shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR | SQUARE | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE | IN-LINE | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH | IN-LINE | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | SMALL OUTLINE | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH | IN-LINE | SMALL OUTLINE | SMALL OUTLINE |
| Parallel/Serial | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL | SERIAL |
| Peak Reflow Temperature (Cel) | 260 | 260 | — | 260 | — | 260 | 260 | 260 | — | 260 | 260 |
| Programming Voltage | 2.5 V | 4.5 V | 5 V | 4.5 V | 5 V | 4.5 V | 2.5 V | 2.5 V | 5 V | 2.5 V | 2.5 V |
| Qualification Status | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Serial Bus Type | SPI | I2C | I2C | I2C | I2C | I2C | I2C | I2C | SPI | SPI | SPI |
| Standby Current-Max | 0.000001 A | 0.0000015 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000001 A | 0.000005 A |
| Supply Current-Max | 0.005 mA | 0.003 mA | 0.003 mA | 0.003 mA | 0.003 mA | 0.003 mA | 0.003 mA | 0.003 mA | 0.005 mA | 0.005 mA | 0.005 mA |
| Supply Voltage-Max (Vsup) | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 5.5 V | 3.6 V | 3.6 V | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage-Min (Vsup) | 1.8 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 2.5 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V | 1.8 V |
| Supply Voltage-Nom (Vsup) | 2.5 V | 4.5 V | 5 V | 4.5 V | 5 V | 4.5 V | 2.5 V | 2.5 V | 5 V | 2.5 V | 2.5 V |
| Surface Mount | YES | YES | NO | YES | NO | YES | YES | YES | NO | YES | YES |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL | OTHER | OTHER | INDUSTRIAL | INDUSTRIAL | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) - annealed | Matte Tin (Sn) | Matte Tin (Sn) | Matte Tin (Sn) |
| Terminal Form | GULL WING | GULL WING | THROUGH-HOLE | GULL WING | THROUGH-HOLE | GULL WING | GULL WING | GULL WING | THROUGH-HOLE | GULL WING | GULL WING |
| Terminal Pitch | 1.27 mm | 1.27 mm | 2.54 mm | 0.65 mm | 2.54 mm | 0.95 mm | 1.27 mm | 0.95 mm | 2.54 mm | 0.65 mm | 1.27 mm |
| Terminal Position | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL | DUAL |
| Write Cycle Time-Max (tWC) | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms | 5 ms |
| Write Protection | HARDWARE/SOFTWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE | HARDWARE/SOFTWARE | HARDWARE |
| I2C Control Byte | — | 1010DDDR | 1010DDDR | 1010DDDR | 1010DDDR | 1010XXXR | 1010DDDR | 1010DDDR | — | — | — |
| Reverse Pinout | — | NO | — | — | — | — | — | — | — | — | — |
| Screening Level | — | AEC-Q100 | TS 16949 | — | TS 16949 | — | TS 16949 | TS 16949 | — | AEC-Q100 | TS 16949 |
| Time@Peak Reflow Temperature-Max (s) | — | 40 | — | 40 | — | — | 30 | 40 | — | 40 | — |
| Date Of Intro | — | — | — | — | — | — | — | — | — | — | 1997-09-01 |
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 25AA640A-I/SN 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 25AA640A-I/SN 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 25AA640A-I/SN?
Known equivalents for 25AA640A-I/SN include 24LC256-I/SM, 24LC32AF-I/P, 24LC64-I/MS. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of 25AA640A-I/SN?
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 25AA640A-I/SN 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.