93C56AT-E/SN EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C56AT-E/SN is a 2Kbit non-volatile EEPROM memory integrated circuit manufactured by Microchip Technology. This device operates via the Microwire serial interface protocol at 2 MHz clock frequency and is housed in an 8-SOIC surface mount package. The part is currently in active production status with verified programmability certification from DiGi-Electronics. Alternative equivalent parts may be required due to inventory constraints, supply chain considerations, or specific packaging requirements in manufacturing environments.

Substiute Parts

93C56AT-E/SN

Microchip TechnologyIn Stock: 1004493C56AT-E/SN Datasheet

Current PartRFQ

93C56A-E/SN

Microchip TechnologyIn Stock: 586593C56A-E/SN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C56AT-E/SN is determined by strict equivalence across the following critical parameters:

• Memory Capacity & Organization: 2Kbit capacity with 256 x 8 bit organization
• Serial Interface Protocol: Microwire interface compatibility
• Operating Frequency: 2 MHz clock frequency
• Electrical Specifications: 4.5V to 5.5V supply voltage range and -40°C to 125°C operating temperature
• Package Specification: 8-SOIC surface mount package with 0.154" (3.90mm) width
• Compliance Standards: ROHS3 compliance and MSL Level 1 rating

The 93C56A-E/SN qualifies as a direct equivalent substitute based on identical electrical characteristics, memory specifications, interface protocol, and package configuration. Packaging format differences (tube versus standard packaging) do not affect functional or electrical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 93C56A-E/SN is a fully qualified equivalent substitute for the 93C56AT-E/SN. Both parts maintain active production status with identical electrical performance, memory specifications, and interface characteristics. Both devices carry ROHS3 compliance certification and DiGi-Electronics programmability verification, confirming suitability for regulated manufacturing environments and embedded system applications requiring non-volatile memory storage.

Selection between these parts should be based on availability, packaging format requirements (tube versus standard packaging), and supply chain logistics rather than functional or electrical considerations.

Frequently Asked Questions (FAQ)

Q: Can the 93C56A-E/SN be used as a direct replacement for the 93C56AT-E/SN in existing circuit designs?

A: Yes. Both parts are electrically and functionally identical. They share identical pin configurations, electrical specifications, memory capacity, interface protocol, and package dimensions. No circuit modifications are required for substitution.

Q: Are there any differences in the Microwire interface protocol between these parts?

A: No. Both the 93C56AT-E/SN and 93C56A-E/SN implement the identical Microwire serial interface operating at 2 MHz clock frequency with 2ms write cycle time. Interface timing and protocol specifications are equivalent.

Q: What is the significance of the packaging format difference (tube versus standard packaging)?

A: Packaging format affects only handling, storage, and assembly line logistics. Tube packaging and standard packaging contain identical components with identical electrical and mechanical specifications. The choice between formats depends on manufacturing process requirements and inventory management practices.

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

A: Yes. Both the 93C56AT-E/SN and 93C56A-E/SN are ROHS3 compliant, carry MSL Level 1 rating, and hold DiGi-Electronics programmability verification. Both parts are suitable for applications requiring regulatory compliance in consumer, industrial, and automotive environments.

Q: Are there any temperature or voltage operating range differences?

A: No. Both parts operate identically across the -40°C to 125°C temperature range and 4.5V to 5.5V supply voltage range. Operating specifications are fully equivalent.

Q: Can these parts be used interchangeably in production assembly?

A: Yes. From an engineering and manufacturing perspective, these parts are fully interchangeable. PCB layout, footprint, and assembly process parameters remain identical. Substitution requires no design changes or process modifications.