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Microchip Technology 93C46B/P — Memory (DRAM / SRAM / Flash / EEPROM)

Microchip 93C46B/P 1Kbit Microwire EEPROM, 8-DIP, 5V

MPN93C46B/P
Active

Microchip 93C46B/P, 1Kbit serial EEPROM, Microwire interface, 2 MHz clock, 4.5V-5.5V supply, 0°C to 70°C, 8-DIP through-hole package, Tube.

$0.3900Ref. price · indicative, final on quote
Microchip Technology 93C46B/P datasheet (PDF)
Packaging8-DIP (0.300", 7.62mm)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

93C46B/P specifications
ParameterValue
Memory typeNon-Volatile
MountingThrough Hole
Voltage4.5V ~ 5.5V
Frequency2 MHz
Memory interfaceMicrowire
Operating temperature0°C~70°C(TA)
PackageTube
TechnologyEEPROM
Memory size1Kbit
Memory formatEEPROM
Case8-DIP (0.300\", 7.62mm)
Memory organization64 x 16
Write cycle time - word, page2ms

Product details

A 1Kbit EEPROM you can swap in a parking lot

The Microchip 93C46B/P is a 1Kbit serial EEPROM with a Microwire interface, organized as 64 x 16 bits. The 8-DIP through-hole package is socket-friendly — no hot air, no reflow profile, just a PLCC extractor or a gentle pry. That makes it a solid choice for field repairs, legacy board bring-up, or any BOM where you want to keep the memory socketable.

Write cycle timing and endurance context

That is typical for a serial EEPROM of this generation — fast enough for configuration storage and calibration constants, but not for streaming writes. For high-frequency logging, you would want a FRAM or a larger serial Flash. The 1Kbit density holds about 128 bytes of user data; plan your memory map accordingly.

Frequently asked questions

When sourcing 93C46B/P, what is the closest functional second-source — 93C46B/SN?

The 93C46B/SN is the surface-mount SOIC sibling with the same 1Kbit density, Microwire interface, and 2 MHz clock. It is not a second-source — it is the same die in a different package. For a true through-hole alternative, the 93C46/J runs at 1 MHz but is otherwise similar; verify timing compatibility in your design.