93LC76C-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93LC76C-E/ST is an 8Kbit non-volatile EEPROM memory integrated circuit manufactured by Microchip Technology. This device operates using the Microwire serial interface protocol and is housed in an 8-TSSOP surface mount package. The part is classified as Active status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications, memory capacity, interface protocol, and physical packaging are maintained across different manufacturers or product variants, enabling design flexibility and supply chain continuity.

Substiute Parts

93LC76C-E/ST

Microchip TechnologyIn Stock: 77093LC76C-E/ST Datasheet

Current PartRFQ

CAV93C76YE-GT3

onsemiIn Stock: 1254CAV93C76YE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 93LC76C-E/ST is determined by strict equivalence across the following critical parameters:

Memory Specifications: The substitute part must maintain 8Kbit total capacity with 1K x 8 or 512 x 16 organization to ensure software and firmware compatibility.

Interface Protocol: The Microwire serial interface is mandatory. This protocol defines the communication timing, signal sequencing, and data transfer methodology between the host controller and memory device.

Electrical Characteristics: Supply voltage range of 2.5V ~ 5.5V and operating temperature range of -40°C ~ 125°C must be maintained to ensure functional operation across specified environmental conditions.

Physical Package: The 8-TSSOP package with 0.173" width (4.40mm) is required for PCB layout compatibility and mechanical fit within the design.

Compliance Standards: RoHS3 compliance and MSL Level 1 rating ensure regulatory adherence and handling compatibility.

The substitute part CAV93C76YE-GT3 meets all these criteria and is therefore electrically and mechanically interchangeable with the 93LC76C-E/ST.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (93LC76C-E/ST): The Microchip 93LC76C-E/ST is suitable for general-purpose applications requiring 8Kbit Microwire EEPROM functionality. This device is supplied in Tube packaging and maintains Active product status with full RoHS3 compliance.

Substitute Selection (CAV93C76YE-GT3): The onsemi CAV93C76YE-GT3 is qualified to AEC-Q100 automotive standards and carries an Automotive grade designation. This substitute is appropriate for applications requiring automotive-grade reliability and qualification. The device operates at 2 MHz clock frequency, which is lower than the primary part's 3 MHz specification but remains compatible with Microwire protocol timing requirements. This substitute is supplied in Tape & Reel packaging format.

Both parts maintain identical memory capacity, interface protocol, voltage supply range, operating temperature range, and physical package dimensions. Selection between these parts depends on supply chain availability, packaging format requirements (Tube versus Tape & Reel), and automotive qualification necessity.

Frequently Asked Questions (FAQ)

Q: Can the CAV93C76YE-GT3 directly replace the 93LC76C-E/ST in existing designs?

A: Yes. Both devices share identical memory capacity (8Kbit), memory organization (1K x 8, 512 x 16), Microwire interface protocol, supply voltage range (2.5V ~ 5.5V), operating temperature range (-40°C ~ 125°C), and 8-TSSOP package dimensions. The lower clock frequency of the CAV93C76YE-GT3 (2 MHz versus 3 MHz) does not prevent substitution, as Microwire protocol timing remains compatible.

Q: What is the difference in packaging between these two parts?

A: The 93LC76C-E/ST is supplied in Tube packaging, while the CAV93C76YE-GT3 is supplied in Tape & Reel (TR) format. Both packaging formats contain the same 8-TSSOP component. Tube packaging is typically used for lower-volume orders, while Tape & Reel is standard for automated assembly processes and higher-volume production.

Q: Why does the CAV93C76YE-GT3 have a lower clock frequency?

A: The CAV93C76YE-GT3 operates at 2 MHz compared to the 93LC76C-E/ST at 3 MHz. This difference reflects different design optimization by the manufacturer (onsemi versus Microchip). Both frequencies are compatible with Microwire protocol requirements. Applications requiring maximum data transfer speed should verify that 2 MHz operation meets system timing constraints.

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

A: Yes. The CAV93C76YE-GT3 carries Automotive grade designation and is qualified to AEC-Q100 standards. The 93LC76C-E/ST does not carry automotive qualification. Selection of the onsemi part is required for designs requiring automotive-grade components.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the 93LC76C-E/ST and CAV93C76YE-GT3 are RoHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited) rating, indicating no special moisture handling requirements during storage or assembly.

Q: What is the write cycle time for these EEPROM devices?

A: The 93LC76C-E/ST specifies a write cycle time of 5ms for word and page operations. The CAV93C76YE-GT3 does not provide write cycle time specification in the available data. For applications with strict write timing requirements, the Microchip part should be selected or the onsemi datasheet should be consulted directly.