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Equivalent & Substitute Parts for 25LC320-E/SN
Part Overview
The 25LC320-E/SN is a 32Kbit EEPROM memory IC manufactured by Microchip Technology, featuring SPI interface operation at 2 MHz with 8-SOIC surface mount packaging. This non-volatile memory device operates across a supply voltage range of 2.5V to 5.5V and temperature range of -40°C to 125°C, with a 5ms write cycle time. The part is ROHS3 compliant and currently in active production status with verified programmability. Substitute parts are identified when equivalent memory capacity, interface type, and package form factor are maintained while allowing variations in clock frequency, voltage range, temperature rating, and manufacturer implementation.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Memory Size | 32Kbit |
| Memory Organization | 4K x 8 |
| Memory Interface | SPI |
| Clock Frequency | 2 MHz |
| Write Cycle Time | 5ms |
| Voltage Supply Range | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 125°C |
| Package Type | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the 25LC320-E/SN is determined by strict adherence to the following core parameters:
Non-negotiable Parameters (must match exactly):
- Memory Size: 32Kbit
- Memory Organization: 4K x 8
- Memory Interface: SPI
- Package Type: 8-SOIC (0.154", 3.90mm Width)
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
Allowable Variation Parameters:
- Clock Frequency: May be equal to or greater than 2 MHz
- Write Cycle Time: May be equal to or less than 5ms
- Voltage Supply Range: May encompass or exceed 2.5V ~ 5.5V
- Operating Temperature: May encompass or exceed -40°C ~ 125°C
- Manufacturer: Different manufacturers permitted
- Packaging Format: Tube, Tape & Reel, or Cut Tape acceptable
- Product Status: Active status required
- Compliance: ROHS3 and REACH compliance required
Substitute parts identified in this reference maintain all non-negotiable parameters while offering enhanced or equivalent performance in allowable variation categories.
Parameter Comparison
| Part Number | Manufacturer | Memory Size | Clock Frequency | Voltage Supply | Operating Temperature | Write Cycle Time | Package | Packaging Format |
|---|---|---|---|---|---|---|---|---|
| 25LC320-E/SN | Microchip Technology | 32Kbit | 2 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Tube |
| 25LC320T-E/SN | Microchip Technology | 32Kbit | 2 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Tape & Reel |
| 25LC320A-E/SN | Microchip Technology | 32Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Tube |
| AT25320B-SSHL-B | Microchip Technology | 32Kbit | 20 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Tube |
| AT25320B-SSHL-T | Microchip Technology | 32Kbit | 20 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Cut Tape & Digi-Reel |
| BR25H320F-2CE2 | Rohm Semiconductor | 32Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 4ms | 8-SOIC | Tape & Reel |
| BR25S320F-WE2 | Rohm Semiconductor | 32Kbit | 20 MHz | 1.7V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Tape & Reel |
| CAT25320VI-GT3 | onsemi | 32Kbit | 10 MHz | 1.8V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Cut Tape & Digi-Reel |
| CAV25320VE-GT3 | onsemi | 32Kbit | 10 MHz | 2.5V ~ 5.5V | -40°C ~ 125°C | 5ms | 8-SOIC | Tape & Reel |
| M95320-DFMN6TP | STMicroelectronics | 32Kbit | 20 MHz | 1.7V ~ 5.5V | -40°C ~ 85°C | 5ms | 8-SOIC | Cut Tape & Digi-Reel |
| M95320-DRMN3TP/K | STMicroelectronics | 32Kbit | 20 MHz | 1.8V ~ 5.5V | -40°C ~ 125°C | 4ms | 8-SOIC | Cut Tape & Digi-Reel |
Engineering Selection Recommendations
Direct Replacement (Identical Specifications): 25LC320T-E/SN serves as a direct functional equivalent to 25LC320-E/SN, differing only in packaging format (Tape & Reel versus Tube). Selection between these depends on procurement and assembly requirements.
Enhanced Performance Substitutes (Higher Clock Frequency): 25LC320A-E/SN, BR25H320F-2CE2, CAT25320VI-GT3, and CAV25320VE-GT3 operate at 10 MHz, providing increased data throughput while maintaining identical voltage and temperature specifications as the original part or broader operating ranges. These are suitable for applications requiring faster SPI communication without design modification.
Maximum Performance Substitutes (20 MHz Operation): AT25320B-SSHL-B, AT25320B-SSHL-T, BR25S320F-WE2, M95320-DFMN6TP, and M95320-DRMN3TP/K operate at 20 MHz maximum clock frequency. These parts operate at reduced temperature ranges (-40°C to 85°C) compared to the original specification. M95320-DRMN3TP/K maintains the full -40°C to 125°C temperature range while achieving 20 MHz operation and 4ms write cycle time.
Automotive-Grade Options: BR25H320F-2CE2, CAV25320VE-GT3, and M95320-DRMN3TP/K carry automotive qualification (AEC-Q100) and are suitable for applications requiring automotive-grade components.
Product Status and Compliance: All listed substitute parts maintain active production status and ROHS3 compliance. Selection should prioritize parts with verified programmability status where design validation is critical.
Frequently Asked Questions (FAQ)
Q: Can I substitute 25LC320-E/SN with a higher clock frequency part? A: Yes. Parts operating at 10 MHz or 20 MHz are functionally compatible substitutes provided all other parameters remain within acceptable ranges. Higher clock frequency allows faster data transfer rates without affecting memory capacity or interface protocol.
Q: What is the difference between 25LC320-E/SN and 25LC320T-E/SN? A: Both parts are electrically identical with matching specifications. The difference is packaging format: 25LC320-E/SN is supplied in Tube format while 25LC320T-E/SN is supplied in Tape & Reel format. Selection depends on assembly line requirements and procurement volume.
Q: Are Microchip, Rohm, onsemi, and STMicroelectronics parts interchangeable? A: Yes, when all electrical and mechanical parameters match. All listed manufacturers produce 32Kbit SPI EEPROM devices in 8-SOIC packages with compatible pinouts and protocols. Verify specific application requirements regarding programmability verification status and automotive qualification if needed.
Q: Can I use AT25320B-SSHL-B in place of 25LC320-E/SN in a -40°C to 125°C application? A: No. AT25320B-SSHL-B operates only to 85°C maximum, making it unsuitable for applications requiring the full -40°C to 125°C range. Use M95320-DRMN3TP/K or CAV25320VE-GT3 instead for 20 MHz or 10 MHz operation respectively within the full temperature range.
Q: What does "DiGi-Electronics Programmable: Verified" mean? A: This indicates the part has been tested and verified for programmability by DiGi-Electronics. Parts marked "Not Verified" have not undergone this specific verification process, though they remain functionally compatible based on manufacturer specifications.
Q: Does package width variation affect compatibility? A: Package width variations (0.154" versus 0.173") indicate different SOIC body widths. While pinout remains compatible, PCB footprint design must accommodate the specific package width. Verify footprint compatibility before substitution.
Q: Which substitute offers the best write cycle performance? A: BR25H320F-2CE2 and M95320-DRMN3TP/K both offer 4ms write cycle time compared to the standard 5ms, providing faster write operations while maintaining all other compatibility parameters.
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