AT24C16C-SSHM-T 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	NC	unconnected	No connect. The AT24C16C does not use device address pins; this pin is not internally bonded.
2	NC	unconnected	No connect. The AT24C16C does not use device address pins; this pin is not internally bonded.
3	NC	unconnected	No connect. The AT24C16C does not use device address pins; this pin is not internally bonded.
4	GND	power_in	Ground reference (0V) for the device.
5	SDA	bidirectional	I2C serial data. Bidirectional open-drain line for serial data transfer; may be wire-ORed with other open-drain / open-collector devices. Requires an external pull-up resistor to VCC.
6	SCL	input	I2C serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Schmitt-trigger filtered input. Requires an external pull-up resistor to VCC.
7	WP	input	Write Protect. Tie to GND for normal read/write operation. Tie to VCC to enable hardware write protection of the full array (per Table 4-1).
8	VCC	power_in	Power supply input. Operating range 1.7V to 5.5V. Typical supply current 0.4mA read / 2.0mA write at VCC=5V, 100kHz. Standby current 1.0uA (1.7V) / 6.0uA (5.5V) max.

Key specifications

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

Ordering variants

AT24C16C-SSHM-T
AT24C16C-SSHM-TPU
AT24C16C-SSHM-TXHM-T
AT24C16C-SSHM-TMAHM-T
AT24C16C-SSHM-TDHM-T
AT24C16C-SSHM-TCS

CAD (KiCad official)

Symbol: AT24C16C-SSHM-T
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
`at24c16c-sshm-t.step`	122 KB	You want the bare part, or you mark your own boards.
`at24c16c-sshm-t-etched.step`	2.5 MB	You want the part with `AT24C16C-SSHM-T` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 625 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 (23 pp, sha256 72c6f7b17a742444, 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