HT8691ARTZ from HTCSEMI, in a SOT-23-6. 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; capable of driving up to +/-30 mA (typ) with a closed-loop output impedance of ~12 ohm at 1 MHz (Av = 1).
2	V-	power_in	Negative supply / ground. Tie to GND for single-supply operation. Total supply (V+ minus V-) is 2.7 V to 5.5 V (6 V absolute max).
3	+IN	input	Non-inverting input. Rail-to-rail common-mode range (V- to V+). Input bias current 0.2 pA typ (60 pA max at 25 degC).
4	-IN	input	Inverting input. Rail-to-rail common-mode range (V- to V+). Input bias current 0.2 pA typ (60 pA max at 25 degC).
5	V+	power_in	Positive supply. 2.7 V to 5.5 V operating (6 V absolute max). Bypass to V- with a local 0.1 uF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	HTCSEMI
Package	SOT-23-6
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

HT8691ARTZ
HT8691ARTZARDZ
HT8691ARTZARMZ
HT8691ARTZARZ

CAD (KiCad official)

Symbol: HT8691ARTZ
Footprint: Package_TO_SOT_SMD:SOT-23-6
3D model: SOT-23-6 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HTCSEMI datasheet (13 pp, sha256 8c07e8e491c16eb4, retrieved 2026-08-17, tier: lcsc)
Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
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