93LC86/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93LC86/SN is a 16Kbit non-volatile EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and 8-SOIC surface mount packaging. This device operates across a 2.5V to 6.0V supply voltage range with a 3 MHz clock frequency and 5ms write cycle time. The part is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when they maintain functional compatibility through matching memory capacity, interface protocol, package form factor, and electrical operating parameters. Substitutes enable design flexibility, inventory optimization, and supply chain continuity.

Substiute Parts

93LC86/SN

Microchip TechnologyIn Stock: 133393LC86/SN Datasheet

Current PartRFQ

93LC86-I/SN

Microchip TechnologyIn Stock: 234393LC86-I/SN Datasheet

MFR RecommendedRFQ

93LC86C-I/SN

Microchip TechnologyIn Stock: 441293LC86C-I/SN Datasheet

MFR RecommendedRFQ

AT93C86A-10SU-2.7

Microchip TechnologyIn Stock: 24335AT93C86A-10SU-2.7 Datasheet

MFR RecommendedRFQ

CAT93C86BVI-GT3

onsemiIn Stock: 3916CAT93C86BVI-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the 93LC86/SN is based on the following critical parameters:

Primary Compatibility Criteria:

• Memory capacity: 16Kbit
• Memory organization: 2K x 8 or 1K x 16
• Package form factor: 8-SOIC surface mount
• Interface protocol: Microwire or 3-Wire Serial
• Supply voltage overlap with 2.5V ~ 6.0V range
• RoHS3 compliance status

Substitute Categories:

Category 1 - Direct Microwire Interface Substitutes (Highest Compatibility): Parts maintaining identical Microwire protocol with matching 16Kbit capacity and 8-SOIC packaging. These substitutes operate within overlapping voltage and temperature ranges.

Category 2 - Alternative Serial Interface Substitutes (Protocol Variation): Parts utilizing 3-Wire Serial interface instead of Microwire, maintaining 16Kbit capacity and 8-SOIC packaging. These require interface protocol verification during design integration.

Category 3 - Extended Voltage Range Substitutes (Enhanced Operating Margin): Parts with expanded supply voltage specifications beyond the original 2.5V ~ 6.0V range, providing additional design flexibility for low-voltage or high-voltage applications.

Parameter Comparison

Engineering Selection Recommendations

93LC86-I/SN (Microchip Technology) Direct substitute with identical Microwire interface and electrical specifications. Extended operating temperature range (-40°C ~ 85°C) provides broader application coverage compared to the original 0°C ~ 70°C specification. Active product status with verified programmability. Higher inventory availability (2300 Pcs) supports supply chain continuity.

93LC86C-I/SN (Microchip Technology) Microwire interface substitute with reduced maximum supply voltage (5.5V vs. 6.0V). Extended operating temperature range (-40°C ~ 85°C) and highest inventory availability (4386 Pcs). Product status is Active; programmability verification status is Not Verified. Suitable for applications operating within 2.5V ~ 5.5V voltage envelope.

AT93C86A-10SU-2.7 (Microchip Technology) Alternative serial interface substitute utilizing 3-Wire Serial protocol instead of Microwire. Reduced clock frequency (2 MHz vs. 3 MHz) and extended write cycle time (10ms vs. 5ms). Expanded inventory availability (24314 Pcs). Requires interface protocol verification during design integration. Active product status with verified programmability.

CAT93C86BVI-GT3 (onsemi) Microwire interface substitute with enhanced clock frequency (4 MHz vs. 3 MHz) and extended voltage range (1.8V ~ 5.5V). Tape & Reel packaging format differs from Tube packaging of original part. Active product status; programmability verification status is Not Verified. Suitable for low-voltage applications requiring higher clock frequency performance.

Frequently Asked Questions (FAQ)

Q: Can 93LC86-I/SN directly replace 93LC86/SN in existing designs? A: Yes. Both parts maintain identical Microwire interface protocol, 16Kbit memory capacity, 3 MHz clock frequency, 5ms write cycle time, and 8-SOIC packaging. The 93LC86-I/SN extends the operating temperature range to -40°C ~ 85°C, providing enhanced thermal coverage.

Q: What is the primary difference between 93LC86C-I/SN and 93LC86-I/SN? A: The 93LC86C-I/SN reduces maximum supply voltage from 6.0V to 5.5V. Both maintain Microwire interface and identical memory specifications. The 93LC86C-I/SN offers higher inventory availability.

Q: Can AT93C86A-10SU-2.7 replace 93LC86/SN without firmware modifications? A: No. The AT93C86A-10SU-2.7 uses 3-Wire Serial interface protocol instead of Microwire, requiring interface protocol verification and potential firmware modifications. Clock frequency is reduced to 2 MHz and write cycle time extends to 10ms.

Q: What are the packaging differences among substitute parts? A: 93LC86/SN, 93LC86-I/SN, 93LC86C-I/SN, and AT93C86A-10SU-2.7 are supplied in Tube packaging. CAT93C86BVI-GT3 is supplied in Tape & Reel (TR) format, affecting handling and automated assembly processes.

Q: Which substitute part offers the lowest minimum supply voltage? A: CAT93C86BVI-GT3 operates at 1.8V minimum supply voltage, compared to 2.5V for 93LC86/SN and 2.7V for AT93C86A-10SU-2.7. This enables low-voltage application designs.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original 93LC86/SN specification.

Q: Which substitute provides the highest clock frequency? A: CAT93C86BVI-GT3 operates at 4 MHz clock frequency, compared to 3 MHz for the original 93LC86/SN and 2 MHz for AT93C86A-10SU-2.7.