Equivalent & Substitute Parts for 93LC56CT-I/MS

Part Overview

The 93LC56CT-I/MS is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and operating across a wide voltage range of 2.5V to 5.5V. This component is designed for non-volatile data storage applications requiring low-power operation and compact surface-mount packaging. The part maintains Active product status with verified programmability through DiGi-Electronics and full RoHS3 compliance. Substitute parts are identified when equivalent electrical specifications, memory capacity, interface protocol, and package compatibility are maintained across the allowed parameter range.

Substiute Parts

93LC56CT-I/MS

Microchip TechnologyIn Stock: 180893LC56CT-I/MS Datasheet

Current PartRFQ

93LC56C-I/MS

Microchip TechnologyIn Stock: 228793LC56C-I/MS Datasheet

DirectRFQ

M93C56-WDW6TP

STMicroelectronicsIn Stock: 52359M93C56-WDW6TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93LC56CT-I/MS is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

• Memory capacity must remain 2Kbit with 256 x 8 or 128 x 16 organization
• Memory interface protocol must be Microwire
• Voltage supply range must encompass or match 2.5V to 5.5V
• Operating temperature range must match -40°C to 85°C
• Mounting type must be Surface Mount
• Package must be either 8-MSOP or 8-TSSOP variant

Allowable Variation Parameters:

• Clock frequency: 2 MHz to 3 MHz (both values acceptable)
• Write cycle time: 5ms to 6ms (both values acceptable)
• Packaging format: Tape & Reel, Tube, or Cut Tape & Digi-Reel acceptable
• Programmability verification status: Not a substitution barrier

The identified substitute parts maintain all critical parameters while operating within the allowable variation range for clock frequency and write cycle time.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status with full RoHS3 compliance and REACH unaffected designation. The 93LC56CT-I/MS and 93LC56C-I/MS are both Microchip Technology products with identical electrical specifications, differing only in packaging format (Tape & Reel versus Tube). The M93C56-WDW6TP from STMicroelectronics operates at 2 MHz clock frequency and 5ms write cycle time, both within the allowable parameter range, and uses 8-TSSOP packaging instead of 8-MSOP. Selection between these substitutes depends on packaging availability, inventory requirements, and physical board layout constraints related to package footprint differences between MSOP and TSSOP variants.

Frequently Asked Questions (FAQ)

Q: Can the M93C56-WDW6TP replace the 93LC56CT-I/MS directly?

A: Yes, the M93C56-WDW6TP is electrically compatible as a substitute. Both parts maintain 2Kbit capacity, Microwire interface, 2.5V to 5.5V supply voltage, and -40°C to 85°C operating temperature. The primary difference is package type: 8-TSSOP (M93C56-WDW6TP) versus 8-MSOP (93LC56CT-I/MS). Board layout and PCB footprint must accommodate the different package dimensions before substitution.

Q: What is the difference between 93LC56CT-I/MS and 93LC56C-I/MS?

A: These parts are electrically identical with matching 3 MHz clock frequency and 6ms write cycle time. The difference is packaging format: 93LC56CT-I/MS is supplied in Tape & Reel format, while 93LC56C-I/MS is supplied in Tube format. Both use 8-MSOP package type.

Q: Are there any performance differences between the substitute parts?

A: The M93C56-WDW6TP operates at 2 MHz clock frequency and 5ms write cycle time, compared to 3 MHz and 6ms for the Microchip variants. Both specifications fall within acceptable operating parameters for this product category. The lower clock frequency and faster write cycle time do not create compatibility issues for standard Microwire interface applications.

Q: Can package type affect substitution compatibility?

A: Yes. The 8-MSOP and 8-TSSOP packages have different physical dimensions and PCB footprints. While electrically compatible, physical board layout must be verified before substitution. The 8-TSSOP package is wider (4.40mm) than 8-MSOP (3.00mm), which may impact board space availability.

Q: What compliance certifications apply to all substitute parts?

A: All three parts maintain RoHS3 compliance, REACH unaffected status, and Active product status. All are classified under ECCN EAR99 and HTSUS 8542.32.0051. Moisture sensitivity level is 1 (Unlimited) for all variants.