ISO7320FCQDRQ1 from Texas Instruments, 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	VCC1	power_in	Power supply for side 1 (input side). 3.3 V or 5 V +/-10% (recommended 3 V to 5.5 V). Bypass to GND1 with a low-ESR ceramic capacitor placed close to the pin.
2	INA	input	Digital input, channel A (side 1). TTL-compatible input with hysteresis (V(IHYS) typ ~460 mV at 5 V). VIH = 2 V min, VIL = 0.8 V max. Referenced to GND1.
3	INB	input	Digital input, channel B (side 1). TTL-compatible input with hysteresis. Same electricals as INA. Referenced to GND1.
4	GND1	power_in	Ground reference for VCC1 / side 1 (input side). Isolated from GND2 by the SiO2 capacitive barrier.
5	GND2	power_in	Ground reference for VCC2 / side 2 (output side). Isolated from GND1 by the SiO2 capacitive barrier.
6	OUTB	output	Digital output, channel B (side 2). Push-pull CMOS output; IOH = -4 mA, IOL = 4 mA recommended. VOH ~ VCCO - 0.5 V, VOL ~ 0.2 V typ. Referenced to GND2. Defaults HIGH on input power loss (F suffix, fail-safe high).
7	OUTA	output	Digital output, channel A (side 2). Push-pull CMOS output; IOH = -4 mA, IOL = 4 mA recommended. Referenced to GND2. Defaults HIGH on input power loss (F suffix, fail-safe high).
8	VCC2	power_in	Power supply for side 2 (output side). 3.3 V or 5 V +/-10% (recommended 3 V to 5.5 V). Bypass to GND2 with a low-ESR ceramic capacitor placed close to the pin.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOIC-8
Category	Comm/UART
Pins	8

Ordering variants

Same part, different packaging or reel option.

ISO7320FCQDRQ1

CAD (KiCad official)

Symbol: ISO7320FCQDRQ1
Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (28 pp, sha256 7fdbf2d9901d5837, 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