93LC76CT-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93LC76CT-E/SN is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and operating across a wide voltage range of 2.5V to 5.5V. This non-volatile memory device is designed for applications requiring reliable data retention with a 5ms write cycle time and operates across industrial temperature ranges from -40°C to 125°C. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Finding equivalent substitute parts becomes necessary when managing supply chain continuity, addressing inventory constraints, or optimizing procurement costs while maintaining functional compatibility.

Substiute Parts

93LC76CT-E/SN

Microchip TechnologyIn Stock: 208193LC76CT-E/SN Datasheet

Current PartRFQ

CAV93C76VE-GT3

onsemiIn Stock: 1099CAV93C76VE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93LC76CT-E/SN is determined by strict alignment across the following critical parameters:

Memory Capacity & Organization: The substitute part must provide 8Kbit total capacity with identical 1K x 8 or 512 x 16 organization to ensure software compatibility and address mapping equivalence.

Serial Interface Protocol: The Microwire interface is mandatory. This serial communication standard defines the timing, signal sequencing, and data format requirements. Only parts implementing identical Microwire protocol are functionally interchangeable.

Voltage Supply Range: The substitute must operate across the full 2.5V to 5.5V range specified for the main part. Narrower voltage ranges create operational constraints and are not acceptable substitutes.

Package & Pinout: The 8-SOIC surface mount package with 0.154" width (3.90mm) is a physical requirement. Identical package ensures PCB compatibility without redesign.

Temperature Operating Range: The -40°C to 125°C range must be met or exceeded. Substitutes with narrower temperature ranges are not equivalent.

Write Cycle Time: The 5ms specification establishes the maximum acceptable write duration. Substitutes with equal or faster write times maintain system performance.

The CAV93C76VE-GT3 from onsemi meets all these criteria, with the exception of clock frequency specification (2 MHz versus 3 MHz), which represents a conservative operational parameter that does not prevent functional substitution in Microwire serial applications where timing is host-controlled.

Parameter Comparison

Engineering Selection Recommendations

Both the 93LC76CT-E/SN and CAV93C76VE-GT3 are active production parts with ROHS3 compliance and identical regulatory status (REACH Unaffected, ECCN EAR99). The CAV93C76VE-GT3 carries AEC-Q100 automotive qualification, which provides additional assurance for applications requiring automotive-grade reliability standards. Selection between these parts should be based on supply availability, lead time requirements, and whether automotive qualification is mandated by system specifications. The lower clock frequency specification of the onsemi part does not create functional incompatibility in Microwire serial applications where the host controller manages communication timing.

Frequently Asked Questions (FAQ)

Q: Can the CAV93C76VE-GT3 be used as a direct replacement for the 93LC76CT-E/SN in existing designs?

A: Yes. Both parts share identical memory capacity (8Kbit), organization (1K x 8, 512 x 16), Microwire interface protocol, voltage supply range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), and 8-SOIC package specifications. No PCB redesign or firmware modification is required.

Q: What is the significance of the 2 MHz versus 3 MHz clock frequency difference?

A: In Microwire serial interface applications, the host controller generates the serial clock signal. The substitute part's 2 MHz specification indicates the maximum supported clock frequency, which is lower than the main part's 3 MHz capability. This does not prevent substitution because the host can operate at or below 2 MHz without functional impact. The substitute remains fully compatible with systems designed for 3 MHz operation.

Q: Are there any package or pinout differences between these parts?

A: No. Both parts use the 8-SOIC surface mount package with identical 0.154" width (3.90mm). Pinout and PCB footprint compatibility is guaranteed.

Q: Does the automotive qualification of the CAV93C76VE-GT3 affect its use in non-automotive applications?

A: No. AEC-Q100 qualification represents an additional quality assurance level and does not restrict use in non-automotive applications. The part remains fully compatible with all applications supported by the main part.

Q: What compliance certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry MSL 1 (unlimited moisture sensitivity rating). Regulatory and environmental compliance is equivalent between the two parts.