PI3C3306UEX from Diodes Incorporated, in a MSOP-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	/BE1	input	Active-LOW switch enable for channel 1. Drive low to close the A1<->B1 FET switch; drive high to place A1/B1 into Hi-Z. TTL/CMOS input, tolerant to 3.6V regardless of VCC.
2	A1	passive	Bus A, channel 1. Bidirectional pass-FET terminal connected to B1 when /BE1 is low; Hi-Z otherwise. ~5Ω on-resistance, high-bandwidth (>400 MHz), 5V tolerant.
3	B1	passive	Bus B, channel 1. Bidirectional pass-FET terminal connected to A1 when /BE1 is low; Hi-Z otherwise. ~5Ω on-resistance, 5V tolerant.
4	GND	power_in	Ground reference (0 V) for logic and switch bias.
5	A2	passive	Bus A, channel 2. Bidirectional pass-FET terminal connected to B2 when /BE2 is low; Hi-Z otherwise. ~5Ω on-resistance, 5V tolerant.
6	B2	passive	Bus B, channel 2. Bidirectional pass-FET terminal connected to A2 when /BE2 is low; Hi-Z otherwise. ~5Ω on-resistance, 5V tolerant.
7	/BE2	input	Active-LOW switch enable for channel 2. Drive low to close the A2<->B2 FET switch; drive high to place A2/B2 into Hi-Z. TTL/CMOS input, tolerant to 3.6V regardless of VCC.
8	VCC	power_in	Positive supply, 2.5V or 3.3V (±10%). Absolute max 4.6V to GND. Datasheet recommends applying VCC before driving signals on any I/O or control pin.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	MSOP-8
Category	Interface
Pins	8

Ordering variants

Same part, different packaging or reel option.

PI3C3306UEX
PI3C3306UEXLEX
PI3C3306UEXLE

CAD (KiCad official)

Symbol: PI3C3306UEX
Footprint: Package_SO:MSOP-8_3x3mm_P0.65mm
3D model: MSOP-8 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Diodes Incorporated datasheet (8 pp, sha256 d69913023e82fa86, retrieved 2026-08-17, tier: manufacturer)
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