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Microchip Technology AT93C46D-TP25-B — Discrete Semiconductors

Microchip AT93C46D-TP25-B EEPROM, 1Kbit, 2 MHz, 8-TSSOP

MPNAT93C46D-TP25-B
End of Life

Microchip Technology AT93C46D-TP25-B EEPROM, 1Kbit, 3-Wire Serial, 2 MHz, 1.8V-5.5V, -40°C to +85°C, 8-TSSOP, Bulk.

$0.44Ref. price · indicative, final on quote
Microchip Technology AT93C46D-TP25-B datasheet (PDF)
Packaging8-TSSOP (0.173", 4.40mm Width)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

AT93C46D-TP25-B specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage1.8V ~ 5.5V
Clock frequency2 MHz
Memory interface3-Wire Serial
Operating temperature-40°C ~ 85°C (TA)
PackageBulk
TechnologyEEPROM
Memory size1Kbit
Memory formatEEPROM
Case8-TSSOP (0.173\", 4.40mm Width)
Memory organization128 x 8, 64 x 16
Write cycle time - word, page5ms

Product details

1 Kbit serial EEPROM for calibration and configuration storage

The Microchip AT93C46D-TP25-B is a 1 Kbit serial EEPROM organized as 128 x 8 or 64 x 16 bits, accessed over a 3-wire interface at up to 2 MHz. The 5 ms write cycle time per word or page means the host waits one bus transaction before polling the ready/busy status; for a 64-byte page write the total non-volatile store completes in under 5 ms.

8-TSSOP surface-mount footprint and industrial temperature range

Supplied in bulk tube — the packaging form means the parts ship in anti-static tubes, not tape-and-reel, so the MOQ is typically a tube quantity (100 pieces) rather than a full reel.

Frequently asked questions

What is the AT93C46D-TP25-B used for?

This 1 Kbit serial EEPROM stores calibration constants, configuration parameters, device IDs, or small lookup tables that must persist through power cycles. The 3-wire interface and 2 MHz clock suit low-pin-count MCUs and ASICs that lack an I²C peripheral.

Does the AT93C46D-TP25-B replace the AT24C08D-SSHM-B?

No — the AT93C46D-TP25-B uses a 3-wire serial interface, while the AT24C08D-SSHM-B uses I²C. They are not pin-compatible and require different bus protocols. The AT93C46D is the correct drop-in for designs originally laid out for a 93C46-series EEPROM.