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Generated by kicad-footprint-generator · KiCad file format 20260206

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sn74ls145d-etched.step	sn74ls145d: factory component page (tier=lcsc) · Ray	8d ago
sn74ls145d-hero.glb	sn74ls145d: hero GLB from the etched model (keeps the MPN mark) · Ray	8d ago
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SN74LS145D

Texas Instruments · Signal Switches, Multiplexers, Decoders · SOP-16

SN74LS145D from Texas Instruments, in a SOP-16. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin	Name	Type	Function
1	Y0	output	Active-low open-collector decimal output 0; driven low when BCD input = 0000, off-state up to 15 V, sink up to 80 mA.
2	Y1	output	Active-low open-collector decimal output 1; driven low when BCD input = 0001, off-state up to 15 V, sink up to 80 mA.
3	Y2	output	Active-low open-collector decimal output 2; driven low when BCD input = 0010, off-state up to 15 V, sink up to 80 mA.
4	Y3	output	Active-low open-collector decimal output 3; driven low when BCD input = 0011, off-state up to 15 V, sink up to 80 mA.
5	Y4	output	Active-low open-collector decimal output 4; driven low when BCD input = 0100, off-state up to 15 V, sink up to 80 mA.
6	Y5	output	Active-low open-collector decimal output 5; driven low when BCD input = 0101, off-state up to 15 V, sink up to 80 mA.
7	Y6	output	Active-low open-collector decimal output 6; driven low when BCD input = 0110, off-state up to 15 V, sink up to 80 mA.
8	GND	power_in	Ground reference (0 V); all output transistor emitters and logic ground return.
9	Y7	output	Active-low open-collector decimal output 7; driven low when BCD input = 0111, off-state up to 15 V, sink up to 80 mA.
10	Y8	output	Active-low open-collector decimal output 8; driven low when BCD input = 1000, off-state up to 15 V, sink up to 80 mA.
11	Y9	output	Active-low open-collector decimal output 9; driven low when BCD input = 1001, off-state up to 15 V, sink up to 80 mA.
12	D	input	BCD input D (MSB, weight 8); one Series 74LS standard load; VIH ≥ 2 V, VIL ≤ 0.8 V.
13	C	input	BCD input C (weight 4); one Series 74LS standard load; VIH ≥ 2 V, VIL ≤ 0.8 V.
14	B	input	BCD input B (weight 2); one Series 74LS standard load; VIH ≥ 2 V, VIL ≤ 0.8 V.
15	A	input	BCD input A (LSB, weight 1); one Series 74LS standard load; VIH ≥ 2 V, VIL ≤ 0.8 V.
16	VCC	power_in	Positive supply voltage; recommended 4.75 V min to 5.25 V max (SN74LS145), absolute maximum 7 V.

Key specifications

Parameter	Value
Manufacturer	Texas Instruments
Package	SOP-16
Category	Logic
Pins	16

CAD (KiCad official)

Symbol: SN74LS145D
Footprint: Package_SO:SOIC-16_3.9x9.9mm_P1.27mm
3D model: SOP-16 (KiCad packages3D, STEP)
3D model files: sn74ls145d-etched.step / sn74ls145d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74ls145d.step / sn74ls145d.glb are the bare package body.

Provenance

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

Datasheet: Texas Instruments datasheet (18 pp, sha256 a973c320238235be, retrieved 2026-10-20, 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