93AA86CT-I/MC EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93AA86CT-I/MC is a 16Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and operating across a wide voltage range of 1.8V to 5.5V. This non-volatile memory device is designed for applications requiring persistent data storage with low power consumption and reliable performance across industrial temperature ranges. 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 package compatibility align with the original component's functional requirements.

Substiute Parts

93AA86CT-I/MC

Microchip TechnologyIn Stock: 562993AA86CT-I/MC Datasheet

Current PartRFQ

CAT93C86BHU4I-GT3

onsemiIn Stock: 3862CAT93C86BHU4I-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 93AA86CT-I/MC are qualified based on the following critical parameters that determine functional interchangeability:

Memory Capacity & Organization: Substitute parts must provide 16Kbit total capacity with 2K x 8 or 1K x 16 organization to maintain data structure compatibility.

Serial Interface Protocol: The Microwire interface is mandatory for communication protocol compatibility with existing circuit designs.

Voltage Supply Range: Substitute parts must support the full 1.8V to 5.5V operating range to ensure compatibility across different power supply configurations.

Operating Temperature Range: Substitute parts must maintain -40°C to 85°C operational specifications for consistent performance in target environments.

Package & Mounting: Surface mount 8-pin DFN packages with exposed pad (2x3mm footprint) ensure PCB layout and thermal management compatibility.

Compliance Standards: RoHS3 compliance and MSL Level 1 rating are required to meet regulatory and manufacturing process requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the 93AA86CT-I/MC and CAT93C86BHU4I-GT3 meet the core functional requirements for 16Kbit Microwire EEPROM applications. Selection between these parts should be based on the following factors:

Product Availability: The 93AA86CT-I/MC maintains higher inventory levels (5520 pcs) compared to the CAT93C86BHU4I-GT3 (3800 pcs), making it the preferred choice for immediate procurement needs.

Programmability Verification: The 93AA86CT-I/MC carries DiGi-Electronics verified programmability status, providing documented compatibility assurance. The CAT93C86BHU4I-GT3 does not carry this verification.

Clock Frequency Specification: The CAT93C86BHU4I-GT3 operates at 4 MHz versus the 93AA86CT-I/MC at 3 MHz. This higher frequency in the substitute part provides performance headroom but does not create incompatibility with designs specified for 3 MHz operation.

Package Compatibility: Both parts use 8-pin DFN packages with exposed pads and identical 2x3mm footprints. The VFDFN and UFDFN designations represent minor package variant differences that do not affect PCB layout or thermal performance.

Regulatory Compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical MSL Level 1 ratings, ensuring equivalent environmental and manufacturing process compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CAT93C86BHU4I-GT3 directly replace the 93AA86CT-I/MC in existing designs?

A: Yes. Both parts share identical memory capacity (16Kbit), organization (2K x 8, 1K x 16), Microwire interface protocol, voltage supply range (1.8V ~ 5.5V), and operating temperature range (-40°C ~ 85°C). The 4 MHz clock frequency of the substitute part is compatible with designs specified for 3 MHz operation.

Q: Are there package compatibility concerns between VFDFN and UFDFN variants?

A: No. Both package types are 8-pin DFN configurations with exposed pads and identical 2x3mm footprints. PCB layout, solder pad dimensions, and thermal characteristics remain compatible.

Q: What is the significance of the DiGi-Electronics programmability verification on the 93AA86CT-I/MC?

A: This verification indicates that the 93AA86CT-I/MC has been tested and documented as compatible with DiGi-Electronics programming equipment and processes. The CAT93C86BHU4I-GT3 lacks this specific verification, though it maintains equivalent electrical specifications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the 93AA86CT-I/MC and CAT93C86BHU4I-GT3 are ROHS3 compliant, REACH unaffected, carry MSL Level 1 ratings, and share identical ECCN (EAR99) and HTSUS (8542.32.0051) classifications.

Q: Is the unspecified write cycle time for the CAT93C86BHU4I-GT3 a concern?

A: The 93AA86CT-I/MC specifies a 5ms write cycle time. The CAT93C86BHU4I-GT3 does not provide this specification in available documentation. For applications with strict write cycle time requirements, the 93AA86CT-I/MC is the recommended choice.

Q: Which part should be selected for new designs?

A: Selection depends on procurement priorities. The 93AA86CT-I/MC is recommended for designs requiring verified programmability documentation and higher inventory availability. The CAT93C86BHU4I-GT3 is suitable when onsemi supply chain access is preferred and higher clock frequency operation is beneficial.