93C46AT-E/OT Equivalent & Substitute Parts

Part Overview

The 93C46AT-E/OT is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and SOT-23-6 surface mount packaging. This component is classified as non-volatile memory with active product status and full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same memory category and packaging format.

Substiute Parts

93C46AT-E/OT

Microchip TechnologyIn Stock: 112993C46AT-E/OT Datasheet

Current PartRFQ

93LC46AT-E/OT

Microchip TechnologyIn Stock: 342393LC46AT-E/OT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C46AT-E/OT is determined by strict alignment of the following parameters:

Memory capacity (1Kbit), memory organization (128 x 8 bit structure), serial interface protocol (Microwire), physical package format (SOT-23-6), surface mount mounting type, and operating temperature range (-40°C to 125°C). The substitute part 93LC46AT-E/OT meets all these core requirements while maintaining identical memory specifications and package compatibility. Voltage supply range differences do not preclude substitution when the operating voltage of the application falls within the overlapping range (4.5V ~ 5.5V).

Parameter Comparison

Engineering Selection Recommendations

Both the 93C46AT-E/OT and 93LC46AT-E/OT are active products with verified programmability status and full ROHS3 compliance. Selection between these parts depends on application-specific requirements. The 93C46AT-E/OT operates within a narrower supply voltage range (4.5V ~ 5.5V) with a faster write cycle time of 2ms. The 93LC46AT-E/OT extends the minimum supply voltage to 2.5V, providing broader voltage compatibility, though with an extended write cycle time of 6ms. Both components maintain identical memory capacity, interface protocol, package format, and temperature operating range. Component selection should align with the system's voltage supply specifications and write cycle timing requirements.

Frequently Asked Questions (FAQ)

Q: Can the 93LC46AT-E/OT directly replace the 93C46AT-E/OT in existing designs?

A: Direct replacement is possible when the application operates within the overlapping voltage range (4.5V ~ 5.5V) and the extended write cycle time of 6ms is acceptable. If the design requires the faster 2ms write cycle time or operates below 4.5V, the 93C46AT-E/OT is the appropriate selection.

Q: Are the pin configurations identical between these parts?

A: Both parts use the SOT-23-6 package format with identical pinout and surface mount compatibility, enabling direct PCB-level substitution without layout modifications.

Q: What is the significance of the voltage supply range difference?

A: The 93LC46AT-E/OT supports operation down to 2.5V, making it suitable for low-voltage applications. The 93C46AT-E/OT requires minimum 4.5V. Applications operating at fixed 5V supply can use either part based on write cycle timing needs.

Q: Do both parts maintain the same memory interface protocol?

A: Yes, both components implement the Microwire serial interface at 2 MHz clock frequency with identical 1Kbit capacity and 128 x 8 organization, ensuring software and firmware compatibility.

Q: Are there compliance or certification differences between these parts?

A: Both parts carry identical RoHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status, with no compliance-based restrictions on substitution.