Equivalent & Substitute Parts for 93LC46CT-I/MS

Part Overview

The 93LC46CT-I/MS is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and operating across a 2.5V to 5.5V supply voltage range. This component is classified as Active product status and is ROHS3 compliant. Alternative equivalent parts may be required due to packaging availability, inventory constraints, or specific application requirements for different form factors or interface specifications.

Substiute Parts

93LC46CT-I/MS

Microchip TechnologyIn Stock: 74293LC46CT-I/MS Datasheet

Current PartRFQ

93LC46C-I/MS

Microchip TechnologyIn Stock: 221693LC46C-I/MS Datasheet

DirectRFQ

AT93C46DY6-YH-T

Microchip TechnologyIn Stock: 2392AT93C46DY6-YH-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93LC46CT-I/MS is determined by the following critical parameters: memory capacity (1Kbit), memory organization (128 x 8 or 64 x 16), operating voltage range (minimum 2.5V support), temperature range (-40°C to 85°C), and surface mount package compatibility. The 93LC46C-I/MS qualifies as a direct substitute due to identical electrical specifications and packaging, with the primary difference being packaging format (Tube versus Tape & Reel). The AT93C46DY6-YH-T represents a manufacturer-recommended alternative that maintains core memory capacity and organization but operates with a different serial interface protocol (3-Wire Serial versus Microwire), extended lower voltage support (1.8V minimum), and different physical packaging (8-Mini Map versus 8-MSOP).

Parameter Comparison

Engineering Selection Recommendations

The 93LC46C-I/MS serves as the primary direct substitute for the 93LC46CT-I/MS, offering identical electrical and functional specifications with only packaging format differentiation. Both components maintain Active product status and ROHS3 compliance. The AT93C46DY6-YH-T is classified as a manufacturer-recommended alternative and carries verified DiGi-Electronics programmable status, providing extended lower voltage operation (1.8V minimum) and improved write cycle performance (5ms versus 6ms). Selection between these alternatives depends on interface protocol compatibility within the target application, as the AT93C46DY6-YH-T employs 3-Wire Serial interface rather than Microwire protocol, and physical package footprint requirements specific to the PCB design.

Frequently Asked Questions (FAQ)

Q: Can the 93LC46C-I/MS directly replace the 93LC46CT-I/MS in production?

A: Yes. Both parts share identical electrical specifications, memory capacity, interface protocol, and operating parameters. The distinction is packaging format: 93LC46CT-I/MS is supplied in Tape & Reel format while 93LC46C-I/MS is supplied in Tube format. Component-level functionality is equivalent.

Q: What is the primary difference between the AT93C46DY6-YH-T and the 93LC46CT-I/MS?

A: The AT93C46DY6-YH-T uses 3-Wire Serial interface protocol instead of Microwire, operates at a lower clock frequency (2 MHz versus 3 MHz), supports extended lower voltage operation (1.8V minimum), and uses a different physical package (8-Mini Map versus 8-MSOP). These differences require circuit-level evaluation for compatibility.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 93LC46CT-I/MS, 93LC46C-I/MS, and AT93C46DY6-YH-T are all ROHS3 compliant and REACH unaffected.

Q: What packaging considerations apply when selecting between these parts?

A: The 93LC46CT-I/MS and 93LC46C-I/MS both use 8-MSOP package with 0.118" width and 3.00mm height. The AT93C46DY6-YH-T uses 8-Mini Map (2x3) package, which has different PCB footprint requirements and may not be pin-compatible without circuit redesign.

Q: Can the AT93C46DY6-YH-T be used in applications requiring Microwire protocol?

A: No. The AT93C46DY6-YH-T implements 3-Wire Serial interface, which is not compatible with Microwire protocol. Interface protocol compatibility must be verified at the circuit design level before substitution.