A CMOS 16-channel analog multiplexer/demultiplexer in a SOIC-24, the big brother of the CD4051B. A 4-bit binary address (S0-S3) connects one of sixteen channels (I0-I15) to the single COMMON pin, bidirectionally, so it reads sixteen analog inputs into one MCU ADC pin or fans one signal out to sixteen. An active-low enable (~E) floats all channels when high. It passes signals rail to rail across a 2-6 V supply with low on-resistance and break-before-make switching. The go-to part for scanning many sensors or buttons on a single pin.

Pinout

Pin	Name	Type	Function
1	COMMON	bidirectional	Common analog input/output (Z). All 16 switches share this node.
2	I7	bidirectional	Switch channel 7 analog input/output. Connected to COMMON when S3..S0 = 0111 and E = 0.
3	I6	bidirectional	Switch channel 6 analog input/output. Selected when S3..S0 = 0110 and E = 0.
4	I5	bidirectional	Switch channel 5 analog input/output. Selected when S3..S0 = 0101 and E = 0.
5	I4	bidirectional	Switch channel 4 analog input/output. Selected when S3..S0 = 0100 and E = 0.
6	I3	bidirectional	Switch channel 3 analog input/output. Selected when S3..S0 = 0011 and E = 0.
7	I2	bidirectional	Switch channel 2 analog input/output. Selected when S3..S0 = 0010 and E = 0.
8	I1	bidirectional	Switch channel 1 analog input/output. Selected when S3..S0 = 0001 and E = 0.
9	I0	bidirectional	Switch channel 0 analog input/output. Selected when S3..S0 = 0000 and E = 0.
10	S0	input	Binary select/address input, LSB. Digital CMOS input.
11	S1	input	Binary select/address input.
12	GND	power_in	Ground reference (0 V). Also sets the lower rail of the analog switch signal range.
13	S3	input	Binary select/address input, MSB.
14	S2	input	Binary select/address input.
15	~E	input	Active-low enable. E = 0 enables the selected switch; E = 1 opens all 16 switches (high-Z).
16	I15	bidirectional	Switch channel 15 analog input/output. Selected when S3..S0 = 1111 and E = 0.
17	I14	bidirectional	Switch channel 14 analog input/output. Selected when S3..S0 = 1110 and E = 0.
18	I13	bidirectional	Switch channel 13 analog input/output. Selected when S3..S0 = 1101 and E = 0.
19	I12	bidirectional	Switch channel 12 analog input/output. Selected when S3..S0 = 1100 and E = 0.
20	I11	bidirectional	Switch channel 11 analog input/output. Selected when S3..S0 = 1011 and E = 0.
21	I10	bidirectional	Switch channel 10 analog input/output. Selected when S3..S0 = 1010 and E = 0.
22	I9	bidirectional	Switch channel 9 analog input/output. Selected when S3..S0 = 1001 and E = 0.
23	I8	bidirectional	Switch channel 8 analog input/output. Selected when S3..S0 = 1000 and E = 0.
24	VCC	power_in	Supply voltage. 2 V to 6 V for HC types; 4.5 V to 5.5 V for HCT types. Also sets the upper rail of the analog signal range.

Key specifications

Parameter	Value
Type	16-channel analog mux / demux
Channels	16 (I0-I15 <-> COMMON)
Control	4-bit address S0-S3 + ~E enable
Direction	Bidirectional (mux or demux)
Signal range	rail-to-rail
Supply voltage	2-6 V
Switching	break-before-make
Package	SOIC-24

Ordering variants

Same part, different packaging or reel option.

CD74HC4067M (SOIC-24, tube)
CD74HC4067M96 (SOIC-24, tape & reel)

CAD (KiCad official)

Symbol: 74xx:CD74HC4067M
Footprint: Package_SO:SOIC-24W_7.5x15.4mm_P1.27mm
3D model: SOIC-24W (KiCad packages3D)

Provenance

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

Datasheet: Texas Instruments datasheet (32 pp, sha256 d3f463b2c11ea8ec, 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