93C76C-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C76C-E/SN is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol. This non-volatile memory device operates at 3 MHz clock frequency with a 2ms write cycle time and is housed in an 8-SOIC surface mount package. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating.

Equivalent and substitute parts are identified when design requirements permit operation at alternative clock frequencies, supply voltage ranges, or when sourcing from alternative manufacturers becomes necessary due to inventory constraints or supply chain considerations.

Substiute Parts

93C76C-E/SN

Microchip TechnologyIn Stock: 73893C76C-E/SN Datasheet

Current PartRFQ

93C76-E/SN

Microchip TechnologyIn Stock: 118093C76-E/SN Datasheet

MFR RecommendedRFQ

CAV93C76VE-GT3

onsemiIn Stock: 1099CAV93C76VE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C76C-E/SN is determined by the following critical parameters:

Memory Capacity & Organization: All substitute parts must maintain 8Kbit capacity with 1K x 8 or 512 x 16 organization to ensure functional equivalence in memory addressing and data storage.

Serial Interface Protocol: Microwire interface compatibility is mandatory. The serial communication protocol must match the original specification to ensure software and hardware interface compatibility without firmware modification.

Package & Mounting: The 8-SOIC surface mount package with 0.154" (3.90mm) width is required for PCB layout compatibility. Pin count and pitch must remain identical.

Operating Temperature Range: The -40°C ~ 125°C operating range must be maintained or exceeded to ensure reliability across the specified thermal environment.

Supply Voltage Compatibility: Substitute parts must operate within or encompass the 4.5V ~ 5.5V supply range. Parts with extended lower voltage limits (2.5V minimum) remain compatible when the application supplies 4.5V or higher.

Clock Frequency: While the main part operates at 3 MHz, substitute parts operating at 2 MHz remain functionally compatible in applications where the lower clock frequency does not create timing constraints. The Microwire interface supports variable clock frequencies within device specifications.

Parameter Comparison

Engineering Selection Recommendations

93C76-E/SN (Microchip Technology): This substitute maintains identical supply voltage range and operating temperature specifications as the main part. Both devices are manufactured by Microchip Technology with ROHS3 compliance and active product status. The primary difference is reduced clock frequency (2 MHz versus 3 MHz) and extended write cycle time (10ms versus 2ms). Selection of this substitute is appropriate when application timing requirements accommodate the lower clock frequency and extended write cycle time. Inventory availability is higher (1135 pcs) compared to the main part (687 pcs).

CAV93C76VE-GT3 (onsemi): This substitute is AEC-Q100 automotive qualified and features an extended supply voltage range (2.5V ~ 5.5V) compared to the main part (4.5V ~ 5.5V). The device operates at 2 MHz clock frequency and is supplied in Tape & Reel packaging format. Selection of this substitute is appropriate for automotive applications requiring AEC-Q100 qualification or when extended low-voltage operation is required. The part maintains ROHS3 compliance and active product status. Inventory availability is 1031 pcs.

Frequently Asked Questions (FAQ)

Q: Can the 93C76-E/SN substitute for the 93C76C-E/SN without design modifications?

A: The 93C76-E/SN is functionally compatible when application timing requirements accommodate 2 MHz clock frequency operation and 10ms write cycle time. Both parts share identical memory capacity, organization, Microwire interface, supply voltage range, operating temperature, and 8-SOIC package specifications. No PCB layout or pin configuration changes are required. Firmware or software timing loops dependent on 3 MHz clock frequency operation must be evaluated.

Q: What is the primary difference between the Microchip 93C76-E/SN and onsemi CAV93C76VE-GT3?

A: The CAV93C76VE-GT3 is AEC-Q100 automotive qualified and supports extended low-voltage operation (2.5V minimum versus 4.5V minimum). Both devices operate at 2 MHz clock frequency and share identical memory specifications and 8-SOIC package. The onsemi part is supplied in Tape & Reel format while the Microchip substitute is supplied in Tube format. Selection depends on automotive qualification requirements and supply voltage range needs.

Q: Are all three parts pin-compatible?

A: Yes. The 93C76C-E/SN, 93C76-E/SN, and CAV93C76VE-GT3 all use the 8-SOIC package with identical pin count and pitch (0.154", 3.90mm width). Direct PCB substitution is possible without layout modifications.

Q: What is the impact of reduced clock frequency on system performance?

A: The substitute parts operate at 2 MHz versus the main part's 3 MHz clock frequency. This affects serial data transfer rate on the Microwire interface. Applications with strict timing requirements or high-speed data transfer needs must verify that 2 MHz operation meets performance specifications. Write cycle time is also extended (10ms for the 93C76-E/SN versus 2ms for the main part), affecting EEPROM programming speed.

Q: Can the CAV93C76VE-GT3 be used in non-automotive applications?

A: Yes. The CAV93C76VE-GT3 meets or exceeds all specifications required for the main part in non-automotive applications. AEC-Q100 qualification is an additional qualification that does not restrict use in non-automotive designs. The extended supply voltage range (2.5V ~ 5.5V) provides additional design flexibility.

Q: What packaging format differences exist between the substitutes?

A: The 93C76-E/SN is supplied in Tube packaging format, while the CAV93C76VE-GT3 is supplied in Tape & Reel (TR) format. Tube packaging is typically used for manual assembly or lower-volume production, while Tape & Reel format is optimized for automated pick-and-place assembly. Both formats contain the same device in the same 8-SOIC package.