93C76A-E/P EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93C76A-E/P is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol. This non-volatile memory device operates at 3 MHz clock frequency with a supply voltage range of 4.5V to 5.5V and is housed in an 8-PDIP through-hole package. The device maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent memory capacity, interface protocol, package type, and electrical specifications align within acceptable operational parameters.

Substiute Parts

93C76A-E/P

Microchip TechnologyIn Stock: 76993C76A-E/P Datasheet

Current PartRFQ

93LC76C-I/P

Microchip TechnologyIn Stock: 555793LC76C-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 93C76A-E/P are qualified based on the following critical parameters:

• Memory capacity of 8Kbit with compatible organization (1K x 8 minimum)
• Microwire serial interface protocol compatibility
• 8-DIP through-hole package format
• Supply voltage range that encompasses or exceeds 4.5V ~ 5.5V
• Operating temperature range that covers the application requirements
• Non-volatile EEPROM technology
• Active product status from the same manufacturer

The 93LC76C-I/P meets these substitution criteria while introducing extended supply voltage flexibility (2.5V ~ 5.5V) and alternative memory organization options (512 x 16).

Parameter Comparison

Engineering Selection Recommendations

Both the 93C76A-E/P and 93LC76C-I/P maintain Active product status from Microchip Technology and carry identical ROHS3 compliance and MSL ratings. The 93LC76C-I/P provides extended supply voltage range capability (2.5V ~ 5.5V versus 4.5V ~ 5.5V), enabling operation in lower-voltage applications. The primary trade-off involves operating temperature range, where the 93C76A-E/P supports extended high-temperature operation to 125°C compared to 85°C for the substitute. Write cycle time differs at 2ms versus 5ms respectively. Selection between these parts depends on specific application requirements for temperature range and write performance within the defined voltage and interface constraints.

Frequently Asked Questions (FAQ)

Q: Can the 93LC76C-I/P directly replace the 93C76A-E/P in existing designs?

A: Direct replacement is possible when application operating temperature does not exceed 85°C and write cycle timing of 5ms is acceptable. The identical Microwire interface, 8Kbit capacity, and 8-DIP package ensure physical and functional compatibility within these parameter boundaries.

Q: What is the significance of the extended voltage range in the 93LC76C-I/P?

A: The 93LC76C-I/P operates from 2.5V to 5.5V, compared to 4.5V to 5.5V for the 93C76A-E/P. This extended lower voltage limit enables the substitute part to function in applications with reduced supply voltage, provided the upper voltage limit of 5.5V remains within design specifications.

Q: How does the write cycle time difference affect system design?

A: The 93C76A-E/P completes write operations in 2ms, while the 93LC76C-I/P requires 5ms. Applications with time-critical write sequences must account for this 3ms difference in cycle time when selecting between these parts.

Q: Are both parts suitable for high-temperature applications?

A: The 93C76A-E/P supports operation to 125°C, making it suitable for extended high-temperature environments. The 93LC76C-I/P is rated to 85°C maximum. Selection depends on specific thermal requirements of the application.

Q: Do both parts share identical packaging specifications?

A: Yes. Both the 93C76A-E/P and 93LC76C-I/P use 8-DIP through-hole packages with 0.300" (7.62mm) spacing, ensuring identical PCB footprint compatibility.