PI5V331QEX from Diodes Incorporated, in a QSOP-16-150mil. 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	ENA	input	Active-LOW enable for bank A. When HIGH, all A-side switches (S1A-S4A to DA) are disabled. Logic input with 150 mV hysteresis; VIH=2.0V min, VIL=0.8V max.
2	IN1	input	Select input bit 1. Together with IN0 selects which of the four channels (S1-S4) is connected to the common D pin on each bank. Logic input with 150 mV hysteresis.
3	S4A	bidirectional	Analog video I/O channel 4, bank A. Bidirectional switch pin (usually input) that connects to DA when selected (IN1=1, IN0=X with ENA low). Analog signal range 0-2.0V; RON=3Ω typ.
4	S3A	bidirectional	Analog video I/O channel 3, bank A. Bidirectional switch pin (usually input) that connects to DA when selected (IN1=1, IN0=1 with ENA low). Analog signal range 0-2.0V; RON=3Ω typ.
5	S2A	bidirectional	Analog video I/O channel 2, bank A. Bidirectional switch pin (usually input) that connects to DA when selected (IN1=0, IN0=0 with ENA low). Analog signal range 0-2.0V; RON=3Ω typ.
6	S1A	bidirectional	Analog video I/O channel 1, bank A. Bidirectional switch pin (usually input) that connects to DA when selected (IN1=0, IN0=X with ENA low). Analog signal range 0-2.0V; RON=3Ω typ.
7	DA	bidirectional	Common analog video I/O for bank A (usually output). Connects to one of S1A-S4A per the IN1/IN0 select and ENA enable. Supports up to 100 mA output current.
8	GND	power_in	Ground reference (0V) for supply and analog signals.
9	DB	bidirectional	Common analog video I/O for bank B (usually output). Connects to one of S1B-S4B per the IN1/IN0 select and ENB enable. Supports up to 100 mA output current.
10	S1B	bidirectional	Analog video I/O channel 1, bank B. Bidirectional switch pin (usually input) that connects to DB when selected. Analog signal range 0-2.0V; RON=3Ω typ.
11	S2B	bidirectional	Analog video I/O channel 2, bank B. Bidirectional switch pin (usually input) that connects to DB when selected. Analog signal range 0-2.0V; RON=3Ω typ.
12	S3B	bidirectional	Analog video I/O channel 3, bank B. Bidirectional switch pin (usually input) that connects to DB when selected. Analog signal range 0-2.0V; RON=3Ω typ.
13	S4B	bidirectional	Analog video I/O channel 4, bank B. Bidirectional switch pin (usually input) that connects to DB when selected. Analog signal range 0-2.0V; RON=3Ω typ.
14	IN0	input	Select input bit 0. Together with IN1 selects which of the four channels (S1-S4) is connected to the common D pin on each bank. Logic input with 150 mV hysteresis.
15	ENB	input	Active-LOW enable for bank B. When HIGH, all B-side switches (S1B-S4B to DB) are disabled. Logic input with 150 mV hysteresis; VIH=2.0V min, VIL=0.8V max.
16	VCC	power_in	Positive supply pin. Single +5.0V ±5% supply. Quiescent current 0.1μA typical.

Key specifications

Parameter	Value
Manufacturer	Diodes Incorporated
Package	QSOP-16-150mil
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

PI5V331QEX

CAD (KiCad official)

Symbol: PI5V331QEX
Footprint: Package_SO:QSOP-16_3.9x4.9mm_P0.635mm
3D model: QSOP-16-150mil (KiCad packages3D, STEP)

Provenance

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

Datasheet: Diodes Incorporated datasheet (6 pp, sha256 c1bf59ea6bbffb58, 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