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24C01CT-I-ST

24C01CT-I/ST EEPROM 1Kbit I2C 8-TSSOP, 5V Supply

MPN24C01CT-I/ST
End of Life

Microchip 24C01CT-I/ST serial EEPROM, 1Kbit (128 x 8), I2C interface, 400 kHz clock, 900 ns access, 4.5V to 5.5V supply, -40°C to 85°C, 8-TSSOP package.

$0.41Ref. price · indicative, final on quote
Microchip Technology 24C01CT-I/ST datasheet (PDF)
Packaging8-TSSOP (0.173", 4.40mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

24C01CT-I/ST specifications
ParameterValue
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage4.5V ~ 5.5V
Clock frequency400 kHz
Memory interfaceI²C
Operating temperature-40°C ~ 85°C (TA)
PackageTape & Reel (TR); Cut Tape (CT)
TechnologyEEPROM
Access time900 ns
Memory size1Kbit
Memory formatEEPROM
Case8-TSSOP (0.173\", 4.40mm Width)
Memory organization128 x 8
Write cycle time - word, page1ms

Product details

1Kbit serial EEPROM on a 5V I²C bus

The Microchip 24C01CT-I/ST is a 1Kbit serial EEPROM organized as 128 x 8 bits, accessed over an I²C interface at up to 400 kHz. The 900 ns access time is the standard read-cycle timing for this speed grade.

5V rail — the key fit constraint

Many newer serial EEPROMs in the same package and pinout (e.g., 24LC01BHT-I/MNY) run from 2.5V, making them drop-in compatible with 3.3V logic. The 24C01CT-I/ST stays on a 5V rail only. If your BOM already has a 5V I²C bus, this part fits without translation. If the bus is 3.3V, you need a level shifter or a lower-voltage sibling.

Active and available

It remains a standard catalog item through Microchip's distribution channel, so there is no supply-chain urgency for this line.

Frequently asked questions

Can 24C01CT-I/ST be used as a drop-in replacement for 24C01?

The 24C01CT-I/ST is a specific ordering variant (tape-and-reel, industrial temperature, 8-TSSOP) within the broader 24C01 family. Functionally it is the same 1Kbit I²C EEPROM core, so it can replace a generic 24C01 in the same package and supply voltage if the temperature grade and packaging form factor match your BOM.

Is 24C01CT-I/ST I²C compatible?

Yes, the memory interface is I²C with a maximum clock frequency of 400 kHz. Standard I²C addressing applies; the device uses the three hardware address pins to set the slave address on the bus.