HT1188ARTZ from HTCSEMI, in a SOT-23-5. 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	OUT	output	Amplifier output. Rail-to-rail output; swings to within ~10mV typical of each supply rail. Output short-circuit current ~80mA; typical output drive 50mA.
2	GND	power_in	Ground / negative supply return. Connect to the most negative supply rail. All GND pads are connected on-die.
3	INP	input	Non-inverting analog input of the amplifier. Common-mode voltage range extends from 0V to VDD (beyond-the-rails input capability). Typical input bias current 1pA; input resistance >100GΩ.
4	INN	input	Inverting analog input of the amplifier. Same voltage range as INP (0V to VDD, rail-to-rail input). Typical input bias current 1pA.
5	VDD	power_in	Positive power supply pin. Operating range 2.5V to 5.5V (absolute maximum 6V). Quiescent current 150µA typical / 330µA max per amplifier.

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

HT1188ARTZ
HT1188ARTZBRTZ

CAD (KiCad official)

Symbol: HT1188ARTZ
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HTCSEMI datasheet (6 pp, sha256 84b75d2a024e2e32, 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