24LC04BT-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	unconnected	Not connected internally on the 24XX04. May be left floating or tied to VSS or VCC. Present for pin compatibility with larger 24-series EEPROMs.
2	A1	unconnected	Not connected internally on the 24XX04. May be left floating or tied to VSS or VCC. Present for pin compatibility with larger 24-series EEPROMs.
3	A2	unconnected	Not connected internally on the 24XX04. May be left floating or tied to VSS or VCC. Present for pin compatibility with larger 24-series EEPROMs.
4	VSS	power_in	Ground reference for the device (0 V).
5	SDA	bidirectional	Serial Address/Data I/O. Bidirectional open-drain line for the I2C bus; requires an external pull-up to VCC (typical 10 kΩ for 100 kHz, 2 kΩ for 400 kHz/1 MHz). Data may only change while SCL is low.
6	SCL	input	Serial Clock input used to synchronize data transfer to and from the device. Driven by the I2C master; the 24XX04 operates as an I2C slave.
7	WP	input	Write-Protect input. Must be connected to either VSS or VCC. Tied to VSS: normal read/write operation (memory 000-1FF writable). Tied to VCC: entire memory is write-protected; reads are unaffected.
8	VCC	power_in	Power supply input. Operating range 2.5 V to 5.5 V for the 24LC04B; absolute maximum 6.5 V. Standby current 1 µA typical, active current 1 mA maximum.

Key specifications

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

Ordering variants

24LC04BT-ISN
24LC04BT-IP
24LC04BT-IMS
24LC04BT-IST
24LC04BT-IMC
24LC04BT-IMNY
24LC04BT-IMUY
24LC04BT-IOT
24LC04BT-ICSP

CAD (KiCad official)

Symbol: 24LC04BT-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
`24lc04bt-i.step`	122 KB	You want the bare part, or you mark your own boards.
`24lc04bt-i-etched.step`	1.8 MB	You want the part with `24LC04BT-I` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 461 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 (46 pp, sha256 40bb9334fc46dd10, 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