74HC4053MT from HGSEMI, in a TSSOP-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	Y1B	bidirectional	Analog switch B independent I/O 1. Bidirectional analog signal path to common ZB when SB=H and E=L. Signal range VEE to VDD.
2	Y0B	bidirectional	Analog switch B independent I/O 0. Bidirectional analog signal path to common ZB when SB=L and E=L. Signal range VEE to VDD.
3	Y1C	bidirectional	Analog switch C independent I/O 1. Bidirectional analog signal path to common ZC when SC=H and E=L. Signal range VEE to VDD.
4	ZC	bidirectional	Analog switch C common I/O. Connects to Y0C or Y1C selected by SC when E=L. RON typ 80 Ω at VDD-VEE=9 V.
5	Y0C	bidirectional	Analog switch C independent I/O 0. Bidirectional analog signal path to common ZC when SC=L and E=L. Signal range VEE to VDD.
6	~{E}	input	Active-low enable input. When low, one channel per switch is connected as selected by Sn; when high, all switches are in high-impedance disconnect (independent of Sn).
7	VEE	power_in	Negative analog supply for the switch elements. Recommended operating range -6.0 V to 0 V; sets the lower bound of the analog signal swing.
8	VSS	power_in	Digital ground reference for the SA/SB/SC and E control inputs. Typically tied to VEE for digital-multiplexer use.
9	SC	input	Channel-select digital input for switch C. Selects Y0C (SC=L) or Y1C (SC=H) to connect to ZC when E is low.
10	SB	input	Channel-select digital input for switch B. Selects Y0B (SB=L) or Y1B (SB=H) to connect to ZB when E is low.
11	SA	input	Channel-select digital input for switch A. Selects Y0A (SA=L) or Y1A (SA=H) to connect to ZA when E is low.
12	Y0A	bidirectional	Analog switch A independent I/O 0. Bidirectional analog signal path to common ZA when SA=L and E=L. Signal range VEE to VDD.
13	Y1A	bidirectional	Analog switch A independent I/O 1. Bidirectional analog signal path to common ZA when SA=H and E=L. Signal range VEE to VDD.
14	ZA	bidirectional	Analog switch A common I/O. Connects to Y0A or Y1A selected by SA when E=L. RON typ 80 Ω at VDD-VEE=9 V.
15	ZB	bidirectional	Analog switch B common I/O. Connects to Y0B or Y1B selected by SB when E=L. RON typ 80 Ω at VDD-VEE=9 V.
16	VDD	power_in	Positive supply. Recommended 3.0-9.0 V with respect to VEE (absolute max 12 V). Powers the digital level converter/decoder and sets the upper bound of the analog signal swing.

Key specifications

Parameter	Value
Manufacturer	HGSEMI
Package	TSSOP-16
Category	Comm/UART
Pins	16

Ordering variants

74HC4053MT/TR
74HC4053MTN
74HC4053MTM/TR
74HC4053MTMS/TR
74HC4053MTLQ/TR

CAD (KiCad official)

Symbol: 74HC4053MT
Footprint: Package_SO:TSSOP-16_4.4x5mm_P0.65mm
3D model: TSSOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`74hc4053mt.step`	205 KB	You want the bare part, or you mark your own boards.
`74hc4053mt-etched.step`	2.3 MB	You want the part with `74HC4053MT` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 581 faces against 255 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

Datasheet: HGSEMI datasheet (14 pp, sha256 4dd2103c9b371c7c, 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