AT24C04CDRG from HANSCHIP semiconductor, in a SOP-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	NC	unconnected	No internal connection. Leave floating or tie to GND; not used in the 8-pin SOP/DIP/MSOP package.
2	E1	input	Device address input bit 1. Hard-wired to VCC or GND to set the chip's I2C slave address; internally pulled down to GND if left floating. Provides compatibility with other 2-wire Serial EEPROMs.
3	E2	input	Device address input bit 2. Hard-wired to VCC or GND to set the chip's I2C slave address; internally pulled down to GND if left floating.
4	GND	power_in	Ground reference for the power supply. Must be connected to the system ground.
5	SDA	bidirectional	I2C Serial Data. Open-drain bidirectional data line; requires an external pull-up resistor to VCC. Data changes only while SCL is low and is stable while SCL is high.
6	SCL	input	I2C Serial Clock input. Provides the clock that latches command/data on SDA rising edges and clocks output data on SDA falling edges. Supports 400 kHz Fast-mode and 1 MHz High-Speed.
7	WP	input	Hardware Write Protection. When tied to VCC, the entire memory array becomes read-only; when tied to GND, writes are enabled. Internally pulled down to GND if left floating.
8	VCC	power_in	Device power supply, 1.7 V to 5.5 V. Should be bypassed with a local decoupling capacitor to GND.

Key specifications

Parameter	Value
Manufacturer	HANSCHIP semiconductor
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

AT24C04CDRG
AT24C04CDRG4
AT24C04CDRGCPG
AT24C04CDRGCDGKRG
AT24C04CDRGCPWRG
AT24C04CDRGCRG
AT24C04CDRGCDBVRG

CAD (KiCad official)

Symbol: AT24C04CDRG
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`at24c04cdrg.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c04cdrg-etched.step`	2.2 MB	You want the part with `AT24C04CDRG` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 547 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: HANSCHIP semiconductor datasheet (25 pp, sha256 9492833a9d4101cf, retrieved 2026-08-17, tier: lcsc)
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