Equivalent & Substitute Parts for 93C76B-I/P

Part Overview

The 93C76B-I/P is an 8Kbit EEPROM memory IC manufactured by Microchip Technology, utilizing Microwire serial interface protocol. This non-volatile memory device operates at 3 MHz clock frequency with a 2ms write cycle time and is housed in an 8-PDIP through-hole package. The part maintains Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in applications where the original part becomes unavailable or inventory constraints require alternative sourcing.

Substiute Parts

93C76B-I/P

Microchip TechnologyIn Stock: 96293C76B-I/P Datasheet

Current PartRFQ

93LC76C-I/P

Microchip TechnologyIn Stock: 555793LC76C-I/P Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93C76B-I/P is determined by strict alignment of the following critical parameters:

Memory capacity must remain 8Kbit to maintain data storage equivalence. Memory format and interface protocol (EEPROM with Microwire) are non-negotiable for circuit compatibility. Clock frequency of 3 MHz ensures timing compatibility with existing system designs. Physical package specification (8-DIP, 0.300" pitch) and through-hole mounting type guarantee mechanical interchangeability on printed circuit boards. Operating temperature range of -40°C to 85°C establishes the thermal operating envelope. ROHS3 compliance and REACH unaffected status maintain regulatory alignment.

The 93LC76C-I/P qualifies as a substitute part because it satisfies all critical parameters: 8Kbit capacity, EEPROM format, Microwire interface, 3 MHz operation, 8-DIP package, through-hole mounting, identical temperature range, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 93C76B-I/P and 93LC76C-I/P maintain Active product status from Microchip Technology, ensuring continued manufacturing support and availability. Both parts carry ROHS3 compliance and REACH unaffected certification, meeting current regulatory requirements for electronic component procurement.

The 93LC76C-I/P offers expanded supply voltage compatibility (2.5V ~ 5.5V versus 4.5V ~ 5.5V), providing operational flexibility in systems with lower supply rails. The write cycle time difference (5ms versus 2ms) must be evaluated against application timing requirements; systems with non-critical write timing constraints will experience no functional impact.

Selection between these parts should be based on supply voltage requirements of the target application and write cycle time criticality. Both parts are electrically and mechanically interchangeable within the specified operating parameters.

Frequently Asked Questions (FAQ)

Q: Can the 93LC76C-I/P directly replace the 93C76B-I/P in existing circuit designs?

A: Yes, the 93LC76C-I/P is mechanically and electrically compatible for direct substitution. Both parts use identical 8-DIP through-hole packaging and Microwire interface protocol. Verify that your circuit's supply voltage range accommodates the 93LC76C-I/P's 2.5V minimum specification if operating below 4.5V.

Q: What is the significance of the different write cycle times?

A: The 93C76B-I/P specifies 2ms write cycle time while the 93LC76C-I/P specifies 5ms. This difference affects the duration required to complete a single word or page write operation. Applications with strict write timing constraints must account for this parameter; systems without time-critical write operations will function identically.

Q: Are there differences in memory organization between these parts?

A: The 93C76B-I/P is organized as 512 x 16 (512 words of 16 bits). The 93LC76C-I/P supports both 1K x 8 and 512 x 16 organization modes. Both configurations store 8Kbit total capacity and are compatible with Microwire protocol implementations.

Q: What supply voltage range should I use for the substitute part?

A: The 93LC76C-I/P operates across 2.5V to 5.5V supply range, compared to the original part's 4.5V to 5.5V range. If your circuit operates at 5V nominal supply, both parts are fully compatible. If your circuit operates below 4.5V, only the 93LC76C-I/P will function.

Q: Are both parts available in the same packaging format?

A: Yes, both the 93C76B-I/P and 93LC76C-I/P are supplied in 8-PDIP (0.300", 7.62mm) through-hole packages. Physical board layout and component placement remain identical between parts.