CD4053AMS from HGSEMI, in a QSOP-16. 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	S2B	bidirectional	Switch 2, channel B analog input/output. Connected to common D2 when SEL2=1 and EN=0.
2	S2A	bidirectional	Switch 2, channel A analog input/output. Connected to common D2 when SEL2=0 and EN=0.
3	S3B	bidirectional	Switch 3, channel B analog input/output. Connected to common D3 when SEL3=1 and EN=0.
4	D3	bidirectional	Switch 3 common (pole) analog input/output. Routed to S3A or S3B under SEL3 control.
5	S3A	bidirectional	Switch 3, channel A analog input/output. Connected to common D3 when SEL3=0 and EN=0.
6	EN	input	Active-low enable input. When EN=high all three switches are open (all channels off). When EN=low, SEL1/SEL2/SEL3 select the active channel of each switch. VIL/VIH scale with VDD (e.g. VIH=3.5V min at VDD=5V).
7	VSS	power_in	Negative analog supply. Sets the negative rail for the analog switch. Tie to GND for unipolar operation; set below GND (e.g. -5V) to switch bipolar signals. VDD-VSS range 3V to 15V (18V absolute max).
8	GND	power_in	Digital ground (0 V). Reference for the SEL1/SEL2/SEL3 and EN digital control inputs.
9	SEL3	input	Address/select bit for switch 3. When EN=low, SEL3=0 routes S3A→D3, SEL3=1 routes S3B→D3.
10	SEL2	input	Address/select bit for switch 2. When EN=low, SEL2=0 routes S2A→D2, SEL2=1 routes S2B→D2.
11	SEL1	input	Address/select bit for switch 1. When EN=low, SEL1=0 routes S1A→D1, SEL1=1 routes S1B→D1.
12	S1A	bidirectional	Switch 1, channel A analog input/output. Connected to common D1 when SEL1=0 and EN=0.
13	S1B	bidirectional	Switch 1, channel B analog input/output. Connected to common D1 when SEL1=1 and EN=0.
14	D1	bidirectional	Switch 1 common (pole) analog input/output. Routed to S1A or S1B under SEL1 control.
15	D2	bidirectional	Switch 2 common (pole) analog input/output. Routed to S2A or S2B under SEL2 control.
16	VDD	power_in	Positive supply. Recommended operating range 3V to 15V (18V absolute max) referenced to VSS. Add a 0.1 μF to 10 μF decoupling capacitor between VDD/VSS and GND.

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	QSOP-16
Category	Interface
Pins	16

Ordering variants

Same part, different packaging or reel option.

CD4053AMS/TR
CD4053AMSN
CD4053AMSM/TR
CD4053AMSMT/TR
CD4053AMSLQ/TR

CAD (KiCad official)

Symbol: CD4053AMS
Footprint: Package_SO:QSOP-16_3.9x4.9mm_P0.635mm
3D model: QSOP-16 (KiCad packages3D, STEP)

Provenance

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

Datasheet: HGSEMI datasheet (12 pp, sha256 233189e11ac94755, 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