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

Microchip 93C46B/SN 1Kbit EEPROM, Microwire, 2 MHz, 8-SOIC

MPN93C46B/SN
Active

Microchip 93C46B/SN, 1Kbit serial EEPROM, Microwire interface, 2 MHz clock, 4.5V~5.5V supply, 64 x 16 organization, 2 ms write cycle, 0°C to 70°C, 8-SOIC tube.

$0.3000Ref. price · indicative, final on quote
Microchip Technology 93C46B/SN datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

93C46B/SN specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Voltage4.5V ~ 5.5V
Frequency2 MHz
Memory interfaceMicrowire
Operating temperature0°C~70°C(TA)
PackageTube
TechnologyEEPROM
Memory size1Kbit
Memory formatEEPROM
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization64 x 16
Write cycle time - word, page2ms

Product details

Active production, 5V Microwire EEPROM for commercial-temperature designs

The Microchip 93C46B/SN is a 1Kbit serial EEPROM using the Microwire interface, organized as 64 words of 16 bits each.

Package and footprint — 8-SOIC, tube delivery

Tube shipment means the parts arrive in anti-static tubes, not tape-and-reel — factor that into your pick-and-place feeder setup if you plan automated assembly.

Supply voltage and 5V system compatibility

Rated supply range is 4.5V to 5.5V, which directly answers the common question: yes, the 93C46B/SN is compatible with 5V systems. A 5V ±10% rail keeps it inside spec. There is no on-chip regulator for lower voltages — if your board runs 3.3V logic, look at the 93C46B-I/SN or a 3V-rated EEPROM variant.

Listed as Active in production.

Frequently asked questions

What is the clock frequency of 93C46B/SN?

The Microwire interface clock frequency is 2 MHz.

Is 93C46B/SN the same as 93C46B?

The base product number is 93C46B; the /SN suffix denotes the 8-SOIC surface-mount package in tube. The die and electrical specifications are identical across the 93C46B family.

What is the replacement for 93C46B/SN if obsolete?

The part is currently Active, so no replacement is needed.