Three independent single-pole double-throw analog switches in a SOIC-16, part of the CD4051/4052/4053 mux family. Each of the three switches (A, B, C) has its own select input that connects its common pin to one of two channels, bidirectionally, so it works as three 2-to-1 muxes or 1-to-2 demuxes. A shared inhibit (INH) opens all switches, and a separate VEE lets it pass bipolar analog signals below ground. Use it to swap between two signal sources per channel, route stereo audio, or steer references. Runs 3-18 V (VDD).

Pinout

Pin	Name	Type	Function
1	BY	bidirectional	B-switch Y-channel in/out (analog). Connects to common BX-OR-BY (pin 15) when address B selects the Y side and INH is low.
2	BX	bidirectional	B-switch X-channel in/out (analog). Connects to common BX-OR-BY (pin 15) when address B selects the X side and INH is low.
3	CY	bidirectional	C-switch Y-channel in/out (analog). Connects to common CX-OR-CY (pin 4) when address C selects the Y side and INH is low.
4	CX_OR_CY	bidirectional	C-switch common out/in (analog). Multiplexed pole of the C SPDT: routes to CX (pin 5) or CY (pin 3) per address bit C when INH is low.
5	CX	bidirectional	C-switch X-channel in/out (analog). Connects to common CX-OR-CY (pin 4) when address C selects the X side and INH is low.
6	INH	input	Inhibit (active high, digital). When INH = 1 all three analog switches are turned OFF (all channels disabled). Digital input level: 3-20 V referenced to VSS; see Table 7-1.
7	VEE	power_in	Negative analog supply. Sets the lower bound of the analog signal range; may be equal to VSS for single-supply operation or below VSS for a dual analog supply (VDD − VEE ≤ 20 V absolute max).
8	VSS	power_in	Ground / digital-logic negative supply reference. Reference for the digital control inputs (A, B, C, INH). Typically 0 V.
9	C	input	Digital channel-select C: selects X (0) or Y (1) side of the C analog switch. Referenced VSS to VDD (3-20 V logic level). See Table 7-1.
10	B	input	Digital channel-select B: selects X (0) or Y (1) side of the B analog switch. Referenced VSS to VDD (3-20 V logic level). See Table 7-1.
11	A	input	Digital channel-select A: selects X (0) or Y (1) side of the A analog switch. Referenced VSS to VDD (3-20 V logic level). See Table 7-1.
12	AX	bidirectional	A-switch X-channel in/out (analog). Connects to common AX-OR-AY (pin 14) when address A selects the X side and INH is low.
13	AY	bidirectional	A-switch Y-channel in/out (analog). Connects to common AX-OR-AY (pin 14) when address A selects the Y side and INH is low.
14	AX_OR_AY	bidirectional	A-switch common out/in (analog). Multiplexed pole of the A SPDT: routes to AX (pin 12) or AY (pin 13) per address bit A when INH is low.
15	BX_OR_BY	bidirectional	B-switch common out/in (analog). Multiplexed pole of the B SPDT: routes to BX (pin 2) or BY (pin 1) per address bit B when INH is low.
16	VDD	power_in	Positive supply. Digital logic supply and upper bound of the analog signal range. Operating range 3-20 V (performance degrades below 3 V); VDD − VEE ≤ 20 V absolute max.

Key specifications

Parameter	Value
Type	Triple 2-channel analog mux/demux
Switches	3 independent SPDT (bidirectional)
Control	one select per switch (A/B/C) + INH
Signal range	bipolar (VDD to VEE)
Supply (VDD)	3-18 V
On-resistance	~125 Ω typ at 15 V
Family	CD4051/4052/4053
Package	SOIC-16

Ordering variants

Same part, different packaging or reel option.

CD4053BM (SOIC-16, tube)
CD4053BM96 (SOIC-16, tape & reel)

CAD (KiCad official)

Symbol: 4xxx:4053
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOIC-16 (KiCad packages3D)

Provenance

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

Datasheet: Texas Instruments datasheet (39 pp, sha256 3fbac7b3f3463b15, 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