93LC56/P Equivalent & Substitute Parts

Part Overview

The 93LC56/P is a 2Kbit EEPROM memory IC manufactured by Microchip Technology, utilizing Microwire serial interface protocol. This non-volatile memory device operates at 2 MHz clock frequency with a write cycle time of 10ms per word or page. The component is housed in an 8-PDIP through-hole package and maintains an active product status with ROHS3 compliance. Substitute parts are identified when equivalent memory capacity, interface protocol, package type, and supply voltage specifications align with application requirements.

Substiute Parts

93LC56/P

Microchip TechnologyIn Stock: 401893LC56/P Datasheet

Current PartRFQ

93LC56C-I/P

Microchip TechnologyIn Stock: 120593LC56C-I/P Datasheet

DirectRFQ

93LC56A/P

Microchip TechnologyIn Stock: 145493LC56A/P Datasheet

MFR RecommendedRFQ

93LC56B/P

Microchip TechnologyIn Stock: 195993LC56B/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93LC56/P is determined by the following critical parameters:

• Memory Capacity: 2Kbit (256 x 8 or 128 x 16 organization)
• Interface Protocol: Microwire serial interface
• Package Configuration: 8-PDIP through-hole form factor
• Supply Voltage: 2.5V to 5.5V operating range
• Physical Dimensions: 0.300" (7.62mm) DIP spacing

All substitute parts listed maintain these core specifications. Variations in clock frequency, write cycle time, temperature range, and memory organization do not preclude substitution when the application requirements permit such variations.

Parameter Comparison

Engineering Selection Recommendations

93LC56A/P: Manufacturer-recommended substitute with verified programmability status. Maintains identical clock frequency and supply voltage specifications. Write cycle time is reduced to 6ms, providing improved performance characteristics. Memory organization is fixed at 256 x 8 configuration. Suitable for applications requiring standard temperature range operation (0°C to 70°C).

93LC56B/P: Manufacturer-recommended substitute with verified programmability status. Maintains identical clock frequency and supply voltage specifications. Write cycle time is reduced to 6ms. Memory organization is fixed at 128 x 16 configuration. Suitable for applications requiring standard temperature range operation (0°C to 70°C).

93LC56C-I/P: Direct manufacturer substitute with extended operating temperature range (-40°C to 85°C). Clock frequency increased to 3 MHz with write cycle time reduced to 6ms. Supports both 256 x 8 and 128 x 16 memory organization. Appropriate for applications requiring wider temperature operation or higher clock frequency performance.

Frequently Asked Questions (FAQ)

Q: Can 93LC56A/P replace 93LC56/P in existing designs?

A: Yes. Both devices share identical clock frequency (2 MHz), supply voltage range (2.5V to 5.5V), package configuration (8-DIP), and operating temperature range (0°C to 70°C). The 93LC56A/P features reduced write cycle time (6ms versus 10ms), which is a performance improvement. Memory organization differs (256 x 8 only versus dual organization options), which must be verified against application requirements.

Q: What is the primary difference between 93LC56A/P and 93LC56B/P?

A: Both parts are manufacturer-recommended substitutes with identical electrical specifications. The distinction lies in memory organization: 93LC56A/P uses 256 x 8 configuration, while 93LC56B/P uses 128 x 16 configuration. Selection depends on whether the application requires byte-level (256 x 8) or word-level (128 x 16) memory access patterns.

Q: When should 93LC56C-I/P be selected over other substitutes?

A: The 93LC56C-I/P is selected when applications require extended temperature operation (-40°C to 85°C) or higher clock frequency performance (3 MHz). Standard temperature range applications (0°C to 70°C) do not require this variant.

Q: Are all substitute parts pin-compatible with 93LC56/P?

A: Yes. All substitute parts use identical 8-DIP through-hole package configuration with 0.300" (7.62mm) spacing. Direct socket substitution is mechanically and electrically feasible.

Q: Do all parts maintain ROHS3 compliance?

A: Yes. The 93LC56/P and all listed substitute parts (93LC56A/P, 93LC56B/P, 93LC56C-I/P) are ROHS3 compliant and REACH unaffected.