HT24C08ARZ from HTCSEMI, 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	A0	input	Address input pin. Not internally connected on the HT24C08; may be left floating or tied to VSS/VCC.
2	A1	input	Address input pin. Not internally connected on the HT24C08; may be left floating or tied to VSS/VCC.
3	A2	input	Hard-wire device address input. Tie to VSS or VCC to select one of two possible device addresses on the I2C bus. If left floating, internally read as VSS (low).
4	VSS	power_in	Ground / negative power supply return.
5	SDA	bidirectional	Serial data line. Open-drain bidirectional pin for I2C data transfer; requires an external pull-up resistor. May be wired-OR with other open-drain devices on the bus.
6	SCL	input	Serial clock input. Positive edge clocks data into the EEPROM; negative edge clocks data out. Supports up to 400kHz (Vcc 1.8-5V) or 1MHz (Vcc 2.5-5V).
7	WP	input	Write protect input. When tied to VCC, the full 8K memory array is write-protected. When tied to VSS or left floating, normal read/write operations are enabled.
8	VCC	power_in	Positive supply voltage input, 1.8V to 5.5V over -40C to +85C. Operating current 5mA max (write at 400kHz); standby current 3uA max.

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	SOP-8
Category	Memory
Pins	8

Ordering variants

Same part, different packaging or reel option.

HT24C08ARZ
HT24C08ARZNZ
HT24C08ARZRTZ
HT24C08ARZRMZ
HT24C08ARZRDZ

CAD (KiCad official)

Symbol: HT24C08ARZ
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HTCSEMI datasheet (10 pp, sha256 59e312bfa6902a16, 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