93LC86CT-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93LC86CT-E/SN 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 125°C. The part is currently in active production status with verified programmability through DiGi-Electronics. Substitute parts are identified when equivalent electrical specifications, memory capacity, interface protocol, and physical packaging are maintained across alternative manufacturers.

Key Parameters

Parameter	Specification
Memory Type	Non-Volatile EEPROM
Memory Size	16Kbit
Memory Organization	2K x 8, 1K x 16
Memory Interface	Microwire
Clock Frequency	3 MHz
Write Cycle Time	5ms
Voltage Supply Range	2.5V ~ 5.5V
Operating Temperature	-40°C ~ 125°C
Package Type	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 93LC86CT-E/SN is determined by strict equivalence across the following critical parameters:

Memory capacity: 16Kbit
Memory organization: 2K x 8 or 1K x 16 configuration
Serial interface protocol: Microwire
Physical package: 8-SOIC form factor
Supply voltage compatibility: Minimum 2.5V operation required
Temperature range: -40°C to 125°C operational capability
Surface mount technology compatibility

Substitute parts must maintain these specifications to ensure functional and mechanical interchangeability without circuit redesign or firmware modification.

Parameter Comparison

Parameter	93LC86CT-E/SN (Main)	93LC86C-E/SN	CAV93C86VE-GT3	M93C86-RMN3TP/K
Manufacturer	Microchip Technology	Microchip Technology	onsemi	STMicroelectronics
Memory Size	16Kbit	16Kbit	16Kbit	16Kbit
Memory Organization	2K x 8, 1K x 16	2K x 8, 1K x 16	2K x 8, 1K x 16	2K x 8, 1K x 16
Memory Interface	Microwire	Microwire	Microwire	Microwire
Clock Frequency	3 MHz	3 MHz	2 MHz	2 MHz
Write Cycle Time	5ms	5ms	Not Specified	5ms
Voltage Supply Range	2.5V ~ 5.5V	2.5V ~ 5.5V	2.5V ~ 5.5V	1.8V ~ 5.5V
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package Type	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Programmability Verification	Verified	Verified	Not Verified	Not Verified
Automotive Grade	Not Specified	Not Specified	AEC-Q100	AEC-Q100

Engineering Selection Recommendations

93LC86C-E/SN (Microchip Technology): Direct substitute with identical electrical specifications and verified programmability status. Maintains 3 MHz clock frequency and 5ms write cycle time. Packaging differs in moisture sensitivity level (MSL 3 vs. MSL 1) and distribution format (Tube vs. standard packaging). Suitable for applications where programmability verification is required.

CAV93C86VE-GT3 (onsemi): Functionally compatible substitute with automotive-grade qualification (AEC-Q100) and unlimited moisture sensitivity rating. Clock frequency reduced to 2 MHz. Programmability not verified through DiGi-Electronics. Recommended for automotive applications requiring AEC-Q100 compliance.

M93C86-RMN3TP/K (STMicroelectronics): Functionally compatible substitute with automotive-grade qualification (AEC-Q100) and extended supply voltage range (1.8V minimum). Clock frequency reduced to 2 MHz. Programmability not verified through DiGi-Electronics. Offers lowest minimum supply voltage specification at 1.8V. Recommended for automotive applications and designs requiring lower voltage operation.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with 2 MHz clock frequency instead of 3 MHz? A: Yes. The 2 MHz specification represents a lower maximum operating frequency. Applications designed for 3 MHz operation will function correctly at 2 MHz, though with reduced data transfer rates. Verify that system timing requirements do not mandate the higher frequency.

Q: What is the significance of programmability verification status? A: Verified programmability indicates the part has been tested and confirmed compatible with DiGi-Electronics programming equipment. Non-verified parts may require alternative programming methods or equipment validation before production use.

Q: Are automotive-grade substitutes compatible with industrial applications? A: Yes. Automotive-grade parts (AEC-Q100) meet or exceed industrial specifications and are fully compatible with non-automotive applications. The automotive qualification represents additional quality and reliability testing.

Q: Does the moisture sensitivity level (MSL) affect substitution suitability? A: MSL rating affects storage and handling requirements but does not impact electrical functionality or circuit compatibility. MSL 1 (unlimited) parts require no special moisture control. MSL 3 (168 hours) parts require controlled storage conditions. Select based on your supply chain and storage capabilities.

Q: Can I substitute the 93LC86CT-E/SN with a part rated for 1.8V minimum supply voltage? A: Yes, if your circuit supplies 2.5V or higher. The M93C86-RMN3TP/K rated for 1.8V minimum is backward compatible with 2.5V systems. This substitution provides additional design flexibility for future applications requiring lower voltage operation.

Q: What packaging format differences exist among these substitutes? A: All parts use 8-SOIC surface mount packages with identical physical dimensions (0.154", 3.90mm width). Differences exist only in distribution format: standard packaging, Tube, or Cut Tape & Digi-Reel. These affect ordering and handling but not circuit performance.

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