93AA46C-I/P EEPROM Memory IC Equivalent & Substitute Parts

Part Overview

The 93AA46C-I/P is a 1Kbit EEPROM memory IC manufactured by Microchip Technology, featuring Microwire serial interface protocol and operating at 3 MHz clock frequency. This device is designed for applications requiring non-volatile memory storage in compact 8-DIP through-hole packaging. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

93AA46C-I/P

Microchip TechnologyIn Stock: 86293AA46C-I/P Datasheet

Current PartRFQ

AT93C46D-PU

Microchip TechnologyIn Stock: 250303AT93C46D-PU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 93AA46C-I/P is determined by the following critical parameters:

• Memory Capacity: 1Kbit (128 x 8 or 64 x 16 organization)
• Package Compatibility: 8-DIP through-hole form factor with 0.300" (7.62mm) pitch
• Supply Voltage Range: 1.8V ~ 5.5V operational envelope
• Operating Temperature Range: -40°C ~ 85°C
• Serial Interface Protocol: Microwire or equivalent 3-Wire serial communication
• Compliance Standards: RoHS3 compliance and MSL 1 rating

The AT93C46D-PU qualifies as a substitute based on matching memory capacity, package type, voltage range, temperature range, and compliance certifications. The interface protocol differs (3-Wire Serial vs. Microwire), but both are serial communication standards supporting equivalent data transfer functionality for 1Kbit EEPROM applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 93AA46C-I/P and AT93C46D-PU maintain Active product status with full RoHS3 compliance and MSL 1 ratings, ensuring long-term availability and environmental regulatory adherence. Selection between these parts depends on circuit-level interface protocol requirements. The 93AA46C-I/P operates at 3 MHz with Microwire protocol, while the AT93C46D-PU operates at 2 MHz with 3-Wire Serial protocol. Both devices support identical supply voltage ranges and operating temperature specifications, with equivalent through-hole 8-DIP packaging for direct PCB mounting compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AT93C46D-PU directly replace the 93AA46C-I/P without circuit modifications?

A: Direct pin-for-pin replacement is possible due to identical 8-DIP packaging. However, the serial interface protocol differs (Microwire vs. 3-Wire Serial), requiring firmware or microcontroller communication protocol adjustments to maintain proper data transfer.

Q: Are the memory capacities identical between these parts?

A: Yes. Both devices provide 1Kbit memory capacity with 128 x 8 or 64 x 16 organization, ensuring equivalent data storage functionality.

Q: What is the impact of the 1 MHz clock frequency difference?

A: The AT93C46D-PU operates at 2 MHz compared to the 93AA46C-I/P at 3 MHz. This results in proportionally slower serial data transfer rates but does not affect total memory capacity or write cycle performance.

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

A: Yes. Both devices are RoHS3 compliant, carry MSL 1 ratings, and operate across the identical -40°C ~ 85°C temperature range with 1.8V ~ 5.5V supply voltage support.

Q: Is the 8-DIP package footprint identical for both parts?

A: Yes. Both parts use 8-DIP (0.300", 7.62mm) through-hole packaging, enabling direct PCB mounting compatibility without layout modifications.