93C76CT-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C76CT-I/ST is an 8Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for non-volatile data storage applications requiring Microwire serial interface communication. This component operates at 3 MHz clock frequency with a 2ms write cycle time and is housed in an 8-TSSOP surface mount package. The part is currently in active production status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical specifications are maintained across the same memory capacity, interface protocol, package form factor, and operating voltage ranges. Alternative sources become necessary for supply chain continuity, inventory availability, or specific application requirements within the defined parameter constraints.

Substiute Parts

93C76CT-I/ST

Microchip TechnologyIn Stock: 108193C76CT-I/ST Datasheet

Current PartRFQ

93C76C-I/ST

Microchip TechnologyIn Stock: 187393C76C-I/ST Datasheet

DirectRFQ

BR93G76FVT-3GE2

Rohm SemiconductorIn Stock: 910BR93G76FVT-3GE2 Datasheet

MFR RecommendedRFQ

CAV93C76YE-GT3

onsemiIn Stock: 1254CAV93C76YE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C76CT-I/ST is determined by strict alignment with the following critical parameters:

Memory Capacity & Organization: All substitute parts must provide 8Kbit capacity with 1K x 8 or 512 x 16 organization to ensure data structure compatibility.

Serial Interface Protocol: Microwire interface is mandatory for command and data communication compatibility with existing circuit designs.

Package & Pinout Compatibility: 8-TSSOP surface mount package with 0.173" width (4.40mm) ensures mechanical and electrical pin alignment.

Voltage Supply Range: Substitute parts must operate within or encompass the 4.5V ~ 5.5V supply voltage window of the primary part.

Operating Temperature Range: Minimum operating range of -40°C ~ 85°C is required for industrial and commercial applications.

Clock Frequency & Timing: 3 MHz clock frequency and 2ms write cycle time define the performance envelope for data access operations.

Compliance & Certifications: ROHS3 compliance and MSL 1 rating are maintained across all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

93C76C-I/ST (Microchip Technology): Direct substitute with identical electrical specifications and same manufacturer base product number. Differs only in packaging format (Tube vs. Tape & Reel). Suitable for applications where packaging format does not impact assembly or inventory management. Higher inventory availability (1851 pcs) supports supply chain requirements.

BR93G76FVT-3GE2 (Rohm Semiconductor): Qualified substitute with extended supply voltage range (1.7V ~ 5.5V) providing greater flexibility for low-voltage applications. Write cycle time of 5ms is longer than the primary part specification. Package designation 8-TSSOP-B indicates minor package variant. Maintains 3 MHz clock frequency and all core memory specifications. Suitable for designs requiring lower voltage operation or where extended write timing is acceptable.

CAV93C76YE-GT3 (onsemi): Qualified substitute with automotive-grade qualification (AEC-Q100) and extended operating temperature range (-40°C ~ 125°C). Clock frequency reduced to 2 MHz and write cycle time not specified. Supply voltage range extends to 2.5V minimum. Recommended for automotive and high-temperature industrial applications where extended temperature performance is required. All parts maintain active production status and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can the 93C76C-I/ST replace the 93C76CT-I/ST in production assemblies?

A: Yes. Both parts share identical electrical specifications, memory capacity, interface protocol, and package dimensions. The only difference is packaging format (Tube vs. Tape & Reel). Substitution is valid provided assembly equipment can accommodate the alternative packaging format.

Q: What is the significance of the 8-TSSOP-B package designation for the BR93G76FVT-3GE2?

A: The 8-TSSOP-B indicates a minor package variant within the 8-TSSOP family. Physical dimensions and pin spacing remain compatible with standard 8-TSSOP footprints. The "B" suffix denotes manufacturer-specific package refinements that do not affect electrical or mechanical interchangeability.

Q: Is the CAV93C76YE-GT3 suitable for non-automotive applications?

A: Yes. The automotive qualification (AEC-Q100) indicates enhanced reliability and testing standards but does not restrict use in non-automotive designs. The extended temperature range (-40°C ~ 125°C) and lower clock frequency (2 MHz) are the primary technical considerations for application compatibility.

Q: How does the extended voltage range of the BR93G76FVT-3GE2 (1.7V ~ 5.5V) affect substitution decisions?

A: The extended lower voltage limit (1.7V vs. 4.5V) provides operational flexibility for low-power applications. However, the primary part specification requires 4.5V ~ 5.5V operation. Substitution with the BR93G76FVT-3GE2 is valid only if the application circuit can tolerate the 5ms write cycle time and does not require the 3 MHz clock frequency as a hard requirement.

Q: Are all substitute parts available in the same packaging formats?

A: No. The 93C76C-I/ST is supplied in Tube format, while the 93C76CT-I/ST, BR93G76FVT-3GE2, and CAV93C76YE-GT3 are supplied in Tape & Reel format. Packaging format selection depends on assembly process requirements and inventory management practices.

Q: What is the impact of the 2 MHz clock frequency in the CAV93C76YE-GT3 compared to the 3 MHz primary part?

A: The 2 MHz clock frequency results in slower data access and communication timing. Applications designed for 3 MHz operation will function with the CAV93C76YE-GT3 but at reduced performance. This substitution is valid only when the application does not require the higher clock frequency or when timing margins permit operation at the lower frequency.