93LC86B-I/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93LC86B-I/ST is a 16Kbit EEPROM memory integrated circuit manufactured by Microchip Technology, designed for non-volatile data storage applications requiring Microwire serial interface communication. This device operates across a wide supply voltage range of 2.5V to 5.5V and maintains functionality across industrial temperature ranges from -40°C to 85°C. The component is currently in active product status with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative equivalent parts may be required due to inventory availability, packaging preferences, or specific application requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

93LC86B-I/ST

Microchip TechnologyIn Stock: 109693LC86B-I/ST Datasheet

Current PartRFQ

93LC86C-I/ST

Microchip TechnologyIn Stock: 329893LC86C-I/ST Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 93LC86B-I/ST is determined by strict equivalence across the following critical parameters:

• Memory Capacity & Organization: 16Kbit total capacity with compatible memory organization (1K x 16 or 2K x 8 configurations)
• Serial Interface Protocol: Microwire interface at 3 MHz clock frequency
• Electrical Specifications: Supply voltage range 2.5V to 5.5V and write cycle time of 5ms
• Temperature Range: Operating range of -40°C to 85°C
• Package Compatibility: 8-TSSOP surface mount package with 0.173" width (4.40mm)
• Compliance Standards: ROHS3 compliance and MSL 1 rating

The 93LC86C-I/ST meets all substitution criteria as a direct equivalent part within the same product family, maintaining identical electrical performance and physical form factor while offering alternative packaging options.

Parameter Comparison

Engineering Selection Recommendations

Both the 93LC86B-I/ST and 93LC86C-I/ST are active products from Microchip Technology with identical ROHS3 compliance and MSL 1 ratings. Selection between these parts should be based on packaging availability and inventory requirements. The 93LC86C-I/ST offers flexible memory organization options (2K x 8 or 1K x 16) compared to the fixed 1K x 16 organization of the 93LC86B-I/ST, providing additional application flexibility while maintaining all electrical and thermal specifications. Both parts are suitable for direct substitution in applications requiring 16Kbit Microwire EEPROM functionality within the specified voltage and temperature operating ranges.

Frequently Asked Questions (FAQ)

Q: Can the 93LC86C-I/ST directly replace the 93LC86B-I/ST in existing designs?

A: Yes. Both parts share identical electrical specifications, clock frequency, write cycle time, supply voltage range, operating temperature range, and 8-TSSOP package dimensions. Direct substitution is supported without circuit modifications.

Q: What is the significance of the different memory organization options in the 93LC86C-I/ST?

A: The 93LC86C-I/ST supports both 2K x 8 and 1K x 16 memory organization configurations, while the 93LC86B-I/ST is fixed at 1K x 16. This flexibility in the substitute part allows for broader application compatibility without affecting total capacity or interface protocol.

Q: Are there packaging differences between these parts?

A: The 93LC86B-I/ST is supplied in standard packaging, while the 93LC86C-I/ST is available in Tube packaging. Both maintain the identical 8-TSSOP physical form factor and surface mount characteristics.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both the 93LC86B-I/ST and 93LC86C-I/ST are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, REACH Unaffected status, and EAR99 ECCN classification.

Q: What determines whether a part can substitute for the 93LC86B-I/ST?

A: Substitution requires matching specifications across memory capacity (16Kbit), interface protocol (Microwire at 3 MHz), electrical parameters (2.5V to 5.5V supply, 5ms write cycle), temperature range (-40°C to 85°C), and physical package (8-TSSOP surface mount). All these criteria are met by the 93LC86C-I/ST.