93C86CT-E/ST EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C86CT-E/ST is a 16Kbit non-volatile EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol. This component is actively produced and widely used in embedded systems requiring persistent data storage with low power consumption. The device operates across industrial temperature ranges (-40°C to 125°C) and is packaged in a compact 8-TSSOP surface mount configuration.

Substitute parts are identified when equivalent electrical specifications, memory capacity, interface protocol, and physical packaging are maintained across manufacturers. This ensures functional interchangeability in circuit designs without requiring layout or firmware modifications.

Substiute Parts

93C86CT-E/ST

Microchip TechnologyIn Stock: 104693C86CT-E/ST Datasheet

Current PartRFQ

CAV93C86YE-GT3

onsemiIn Stock: 4172CAV93C86YE-GT3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C86CT-E/ST is determined by strict alignment of the following critical parameters:

• Memory capacity: 16Kbit (non-negotiable)
• Memory organization: 2K x 8 or 1K x 16 configuration
• Serial interface protocol: Microwire standard
• Physical package: 8-TSSOP form factor with identical pin pitch and dimensions
• Operating temperature range: Minimum -40°C to 125°C coverage
• Supply voltage compatibility: Overlapping operational voltage windows
• RoHS and environmental compliance status

The CAV93C86YE-GT3 manufactured by onsemi meets all substitution criteria. This part maintains identical memory specifications, Microwire interface, and 8-TSSOP packaging. The substitute operates across an extended supply voltage range (2.5V to 5.5V), providing broader application flexibility while remaining compatible with 4.5V to 5.5V systems. Both parts share equivalent environmental compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 93C86CT-E/ST and CAV93C86YE-GT3 are active production components with ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.

The 93C86CT-E/ST remains the primary choice for applications requiring the specified 3 MHz clock frequency and 4.5V to 5.5V supply window.

The CAV93C86YE-GT3 is suitable as a direct substitute when:

• The application circuit operates within the 4.5V to 5.5V supply range
• System timing tolerates 2 MHz maximum clock frequency
• Automotive-grade qualification (AEC-Q100) is beneficial or required
• Extended supply voltage range (2.5V to 5.5V) provides design margin

Both parts maintain identical memory capacity, Microwire protocol implementation, and 8-TSSOP packaging, ensuring pin-for-pin compatibility without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the CAV93C86YE-GT3 operate at the same clock frequency as the 93C86CT-E/ST?

A: The CAV93C86YE-GT3 is specified for maximum 2 MHz operation, while the 93C86CT-E/ST supports 3 MHz. In applications where the system clock is configured for 2 MHz or lower, the substitute operates within specification. Higher clock frequencies require the original 93C86CT-E/ST.

Q: Are the pin configurations identical between these parts?

A: Yes. Both components use the 8-TSSOP package with identical pin pitch (0.65mm) and dimensions (0.173" width, 4.40mm). No PCB layout modifications are required for substitution.

Q: What is the significance of the extended voltage range in the CAV93C86YE-GT3?

A: The CAV93C86YE-GT3 operates from 2.5V to 5.5V, compared to the 93C86CT-E/ST range of 4.5V to 5.5V. This broader range allows operation in low-power applications or systems with variable supply voltages. For designs already constrained to 4.5V to 5.5V, this difference provides no functional advantage.

Q: Is the CAV93C86YE-GT3 suitable for automotive applications?

A: The CAV93C86YE-GT3 carries AEC-Q100 automotive qualification. The 93C86CT-E/ST does not list automotive qualification. If automotive-grade certification is required, the CAV93C86YE-GT3 is the appropriate selection.

Q: What is the memory organization difference between 2K x 8 and 1K x 16?

A: Both configurations provide 16Kbit total capacity. The 2K x 8 organization addresses 2,048 locations with 8-bit data width. The 1K x 16 organization addresses 1,024 locations with 16-bit data width. The Microwire interface protocol determines which organization is active; both are available within the same device.

Q: Can these parts be used interchangeably in existing designs?

A: Substitution is valid when the application clock frequency does not exceed 2 MHz and the supply voltage remains within 4.5V to 5.5V. If the design requires 3 MHz operation, the 93C86CT-E/ST must be retained. Verify firmware or hardware timing configurations before substitution.