24LC64T-I from Microchip, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	A0	input	Chip Address Input bit 0. Compared with the corresponding bit of the slave address in the control byte; must be tied to VCC or VSS to select one of up to eight cascaded devices on the same I2C bus.
2	A1	input	Chip Address Input bit 1. Compared with the corresponding bit of the slave address; must be tied to VCC or VSS.
3	A2	input	Chip Address Input bit 2. Compared with the corresponding bit of the slave address; must be tied to VCC or VSS.
4	VSS	power_in	Ground reference for the device.
5	SDA	bidirectional	Serial Address/Data I/O for the I2C bus. Open-drain output requires an external pull-up resistor to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz). Bidirectional data line; changes only while SCL is low except for START/STOP conditions.
6	SCL	input	Serial Clock input used to synchronize data transfer to and from the device. Schmitt-trigger input with spike filtering; up to 400 kHz operation (VCC ≥ 2.5V).
7	WP	input	Write Protect input. Tie to VCC to inhibit WRITE operations on the entire 0000h-1FFFh array (reads unaffected); tie to VSS or leave floating (internal pull-down) for normal read/write operation. Sampled at the STOP bit of every write command.
8	VCC	power_in	Positive supply input, +2.5V to +5.5V for 24LC64 (24AA64 variant supports 1.8V-5.5V). Typical ICC = 1 mA write / 0.05 mA read; standby ICC = 1 µA (Industrial).

Key specifications

Parameter	Value
Manufacturer	Microchip
Package	SOIC-8
Category	Memory
Pins	8

Ordering variants

24LC64T-IP
24LC64T-ISN
24LC64T-ISM
24LC64T-IST
24LC64T-IMS
24LC64T-ISTX

CAD (KiCad official)

Symbol: 24LC64T-I
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`24lc64t-i.step`	122 KB	You want the bare part, or you mark your own boards.
`24lc64t-i-etched.step`	1.6 MB	You want the part with `24LC64T-I` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 405 faces against 147 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Microchip datasheet (24 pp, sha256 8658d00f1910f179, retrieved 2026-08-17, tier: manufacturer)
Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF