RS8907XF from Jiangsu RUNIC Tech, 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	+IN	input	Non-inverting comparator input. Rail-to-rail CMOS input; common-mode range extends from (V-)-0.1 V to (V+)+0.1 V. Input bias current typ 1 pA. Diode-clamped to supply rails; limit external swing beyond rails to <=10 mA.
2	V-	power_in	Negative supply / ground. In single-supply operation connect to GND. Total supply (V+ to V-) range 1.4 V to 5.5 V, 7.0 V absolute maximum.
3	-IN	input	Inverting comparator input. Rail-to-rail CMOS input; common-mode range extends from (V-)-0.1 V to (V+)+0.1 V. Input bias current typ 1 pA. Diode-clamped to supply rails; limit external swing beyond rails to <=10 mA.
4	OUT	output	Push-pull comparator output. Rail-to-rail swing (VOH ~70 mV from V+ at Io=0.1 mA, Vs=1.4 V; VOL ~35 mV from V- at Io=-0.1 mA). Short-circuit sink 42 mA typ / source 38 mA typ at Vs=5 V. Drives capacitive or resistive loads without external pull-up.
5	V+	power_in	Positive supply. Operating range 1.4 V to 5.5 V (7.0 V absolute maximum V+ to V-). Quiescent current 400 nA typ at Vs=1.4 V. Bypass with a local ceramic capacitor to V-.

Key specifications

Parameter	Value
Manufacturer	Jiangsu RUNIC Tech
Package	SOT-23-5
Category	Op-amp/Cmp
Pins	5

Ordering variants

Same part, different packaging or reel option.

RS8907XF
RS8907XFXC5

CAD (KiCad official)

Symbol: RS8907XF
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: Jiangsu RUNIC Tech datasheet (6 pp, sha256 570e6d98276ba673, 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