SN74AUC2G53DCTR from Texas Instruments, 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	COM	bidirectional	Common analog switch terminal. Routed to Y1 when INH=L and A=L, or to Y2 when INH=L and A=H. Bidirectional: signals can pass from COM to Y1/Y2 or from Y1/Y2 to COM, at amplitudes up to VCC.
2	INH	input	Active-high inhibit (enable) control input. When INH=H, both switches are open (no channel selected); when INH=L, the A input selects which channel (Y1 or Y2) is connected to COM. CMOS logic input, 0-3.6 V range.
3	GND	power_in	Ground reference (0 V). Both GND pins should be tied together to the board ground plane.
4	GND	power_in	Ground reference (0 V). Second GND pin; tie together with pin 3 to the board ground plane.
5	A	input	Channel-select control input. With INH=L: A=L selects Y1 to COM, A=H selects Y2 to COM. CMOS logic input, 0-3.6 V range, typical input current 5 µA max.
6	Y2	bidirectional	Analog switch terminal for channel 2. Connected to COM when INH=L and A=H. Bidirectional signal path with typical on-resistance ~6 Ω at VCC=2.3 V, ~12.5 Ω at VCC=1.65 V.
7	Y1	bidirectional	Analog switch terminal for channel 1. Connected to COM when INH=L and A=L. Bidirectional signal path with typical on-resistance ~6 Ω at VCC=2.3 V, ~12.5 Ω at VCC=1.65 V.
8	VCC	power_in	Positive supply voltage input. Recommended operating range 0.8 V to 2.7 V; typical supply current ICC = 10 µA max at VCC=2.7 V. Decouple to GND with a 0.1 µF ceramic capacitor.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	MSOP-8
Category	Interface
Pins	8

Ordering variants

Same part, different packaging or reel option.

SN74AUC2G53DCTR
SN74AUC2G53DCTRDCUR
SN74AUC2G53DCTRYZPR

CAD (KiCad official)

Symbol: SN74AUC2G53DCTR
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: Texas Instruments datasheet (26 pp, sha256 12ddf9a428425e18, 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