74HC151S from GR, in a SOP-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	D3	input	Data input channel 3. Routed to output Y when address CBA = 011 and G̅ is low.
2	D2	input	Data input channel 2. Routed to output Y when address CBA = 010 and G̅ is low.
3	D1	input	Data input channel 1. Routed to output Y when address CBA = 001 and G̅ is low.
4	D0	input	Data input channel 0. Routed to output Y when address CBA = 000 and G̅ is low.
5	Y	output	True (non-inverting) mux output. Reflects the selected D0-D7 input when G̅ is low; forced low when G̅ is high. CMOS push-pull, drives up to 10 LSTL loads.
6	W	output	Complementary (inverting) mux output; W = Y̅. Outputs the inverse of the selected data input when G̅ is low; forced high when G̅ is high.
7	G̅	input	Active-low strobe / enable. When low, the decoded data appears at Y (and its complement at W). When high, Y is forced low and W is forced high regardless of the address inputs.
8	GND	power_in	Ground / negative supply reference (0 V).
9	C	input	Address / data-select input C (MSB of the 3-bit channel selector CBA).
10	B	input	Address / data-select input B (middle bit of the 3-bit channel selector CBA).
11	A	input	Address / data-select input A (LSB of the 3-bit channel selector CBA).
12	D7	input	Data input channel 7. Routed to output Y when address CBA = 111 and G̅ is low.
13	D6	input	Data input channel 6. Routed to output Y when address CBA = 110 and G̅ is low.
14	D5	input	Data input channel 5. Routed to output Y when address CBA = 101 and G̅ is low.
15	D4	input	Data input channel 4. Routed to output Y when address CBA = 100 and G̅ is low.
16	VCC	power_in	Positive supply pin. Operating range 2.0 V to 6.0 V (absolute max 6.5 V). Bypass with a 0.1 µF ceramic capacitor close to the pin.

Key specifications

Parameter	Value
Manufacturer	GR
Package	SOP-16
Category	Logic
Pins	16

Ordering variants

74HC151SS
74HC151SD

CAD (KiCad official)

Symbol: 74HC151S
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`74hc151s.step`	217 KB	You want the bare part, or you mark your own boards.
`74hc151s-etched.step`	2.0 MB	You want the part with `74HC151S` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 506 faces against 267 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: GR datasheet (4 pp, sha256 87e6a3ec3bcd998f, 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