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93LC76CT-I/SN EEPROM Memory IC Equivalent & Substitute Parts
Part Overview
The 93LC76CT-I/SN is an 8Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, featuring Microwire serial interface protocol. This non-volatile memory device operates across a wide supply voltage range of 2.5V to 5.5V and supports industrial temperature specifications from -40°C to 85°C. The component is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating. Alternative equivalent parts are necessary when addressing supply chain constraints, specific packaging requirements, or extended temperature operational needs.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Memory Type | Non-Volatile EEPROM |
| Memory Size | 8Kbit |
| Memory Organization | 1K x 8, 512 x 16 |
| Memory Interface | Microwire |
| Clock Frequency | 3 MHz |
| Write Cycle Time | 5ms |
| Supply Voltage Range | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°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 93LC76CT-I/SN is determined by strict equivalence across the following critical parameters: 8Kbit memory capacity, Microwire serial interface protocol, 1K x 8 or 512 x 16 memory organization, 8-SOIC surface mount package, 2.5V to 5.5V supply voltage compatibility, and ROHS3 compliance status.
The substitute parts listed maintain identical memory architecture, interface protocol, and physical packaging. Variations in clock frequency (2 MHz versus 3 MHz) and operating temperature ranges represent acceptable deviations within the Microwire EEPROM product family, as these parameters do not affect functional interchangeability in standard applications. Packaging format differences (Tape & Reel, Tube, Cut Tape) reflect distribution methods only and do not impact electrical or mechanical compatibility.
Parameter Comparison
| Parameter | 93LC76CT-I/SN (Microchip) | 93LC76C-I/SN (Microchip) | CAV93C76VE-GT3 (onsemi) | M93C76-WMN6TP (STMicroelectronics) |
|---|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | onsemi | STMicroelectronics |
| Memory Size | 8Kbit | 8Kbit | 8Kbit | 8Kbit |
| Memory Organization | 1K x 8, 512 x 16 | 1K x 8, 512 x 16 | 1K x 8, 512 x 16 | 1K x 8, 512 x 16 |
| Memory Interface | Microwire | Microwire | Microwire | Microwire |
| Clock Frequency | 3 MHz | 3 MHz | 2 MHz | 2 MHz |
| Write Cycle Time | 5ms | 5ms | Not Specified | 5ms |
| Supply Voltage | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 125°C | -40°C ~ 85°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active |
Engineering Selection Recommendations
All listed substitute parts maintain active production status and ROHS3 compliance, confirming their suitability for new design implementations and ongoing production support.
The 93LC76C-I/SN from Microchip Technology represents the closest functional equivalent, sharing identical clock frequency (3 MHz) and write cycle timing (5ms) specifications with the primary part. The primary distinction is packaging format: Tube versus Tape & Reel distribution. This part is appropriate for applications requiring direct parameter matching with the original specification.
The CAV93C76VE-GT3 from onsemi provides extended operating temperature range (-40°C to 125°C) and carries AEC-Q100 automotive qualification. This part operates at 2 MHz clock frequency and is suitable for applications requiring automotive-grade reliability or elevated temperature operation beyond standard industrial specifications.
The M93C76-WMN6TP from STMicroelectronics operates at 2 MHz clock frequency with 5ms write cycle time and maintains standard industrial temperature range (-40°C to 85°C). This part offers the highest inventory availability and is distributed in Cut Tape and Digi-Reel formats.
Frequently Asked Questions (FAQ)
Q: Can the 93LC76CT-I/SN be directly replaced with the 93LC76C-I/SN?
A: Yes. Both parts are manufactured by Microchip Technology and share identical electrical specifications including 3 MHz clock frequency, 5ms write cycle time, and -40°C to 85°C operating temperature. The only difference is packaging format (Tape & Reel versus Tube), which does not affect electrical or mechanical compatibility.
Q: What is the impact of using a 2 MHz substitute part instead of the 3 MHz original?
A: The 2 MHz clock frequency in CAV93C76VE-GT3 and M93C76-WMN6TP represents a lower maximum serial communication speed. These parts remain functionally compatible with Microwire protocol implementations, as the interface protocol itself is independent of clock frequency. Applications operating at or below 2 MHz communication rates experience no functional difference.
Q: Is the CAV93C76VE-GT3 suitable for non-automotive applications?
A: Yes. The CAV93C76VE-GT3 meets all electrical and mechanical requirements for standard industrial applications. The automotive qualification (AEC-Q100) and extended temperature range (-40°C to 125°C) represent additional capabilities that do not restrict use in non-automotive designs. This part is appropriate for any application requiring the specified memory capacity and interface protocol.
Q: Are all substitute parts available in the same package configuration?
A: All substitute parts use the 8-SOIC surface mount package with identical physical dimensions (0.154", 3.90mm Width). Differences exist only in distribution packaging: Tape & Reel, Tube, or Cut Tape with Digi-Reel. These distribution formats do not affect component mounting or circuit board integration.
Q: What compliance certifications apply to all listed parts?
A: All parts listed maintain ROHS3 compliance and REACH Unaffected status. Moisture sensitivity level is rated as 1 (Unlimited) across all parts. The CAV93C76VE-GT3 additionally carries AEC-Q100 automotive qualification.
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