Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

main

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

Name	Last commit message	Last updated
docs	Publish 0.1.0 · Ray	7d ago
viewers	sn74hc42n: viewers · Ray	7d ago
package.json	Publish 0.1.0 · Ray	7d ago
page.json	Set visibility: public · Ray	7d ago
README.md	Publish 0.1.0 · Ray	7d ago
sn74hc42n-etched.glb	Publish 0.1.0 · Ray	7d ago
sn74hc42n-etched.step	sn74hc42n: factory component page (tier=lcsc) · Ray	7d ago
sn74hc42n-hero.glb	sn74hc42n: hero GLB from the etched model (keeps the MPN mark) · Ray	7d ago
sn74hc42n-hero.overlay.json	Publish 0.1.0 · Ray	7d ago
sn74hc42n.glb	Publish 0.1.0 · Ray	7d ago
sn74hc42n.kicad_mod	Publish 0.1.0 · Ray	7d ago
sn74hc42n.kicad_sym	Publish 0.1.0 · Ray	7d ago
sn74hc42n.lbr	Publish 0.1.0 · Ray	7d ago
sn74hc42n.step	Publish 0.1.0 · Ray	7d ago

SN74HC42N

XBLW · Signal Switches, Multiplexers, Decoders · DIP-16

SN74HC42N from XBLW, in a DIP-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	~{0Y}	output	Active-low decoded output 0 (multiplexer output), LOW only for BCD input code 0000 and HIGH for all codes above nine.
2	~{1Y}	output	Active-low decoded output 1 (multiplexer output), LOW only for BCD input code 0001.
3	~{2Y}	output	Active-low decoded output 2 (multiplexer output), LOW only for BCD input code 0010.
4	~{3Y}	output	Active-low decoded output 3 (multiplexer output), LOW only for BCD input code 0011.
5	~{4Y}	output	Active-low decoded output 4 (multiplexer output), LOW only for BCD input code 0100.
6	~{5Y}	output	Active-low decoded output 5 (multiplexer output), LOW only for BCD input code 0101.
7	~{6Y}	output	Active-low decoded output 6 (multiplexer output), LOW only for BCD input code 0110.
8	GND	power_in	Ground (0V), the reference for all voltages in the absolute maximum ratings.
9	~{7Y}	output	Active-low decoded output 7 (multiplexer output), LOW only for BCD input code 0111.
10	~{8Y}	output	Active-low decoded output 8 (multiplexer output), LOW only for BCD input code 1000.
11	~{9Y}	output	Active-low decoded output 9 (multiplexer output), LOW only for BCD input code 1001.
12	3A	input	Data input 3A, the most significant BCD input, which can act as an inhibit input in 1-of-8 decoding or as data input in 8-output demultiplexing, with clamp diodes.
13	2A	input	BCD data input 2A, with clamp diodes permitting current-limiting resistors for voltages above VCC.
14	1A	input	BCD data input 1A, with clamp diodes permitting current-limiting resistors for voltages above VCC.
15	0A	input	BCD data input 0A, the least significant input, with clamp diodes permitting current-limiting resistors for voltages above VCC.
16	VCC	power_in	Supply voltage, absolute maximum -0.5V to +7.0V.

Key specifications

Parameter	Value
Manufacturer	XBLW
Package	DIP-16
Category	Logic
Pins	16

CAD (KiCad official)

Symbol: SN74HC42N
Footprint: Package_DIP:DIP-16_W7.62mm
3D model: DIP-16 (KiCad packages3D, STEP)
3D model files: sn74hc42n-etched.step / sn74hc42n-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hc42n.step / sn74hc42n.glb are the bare package body.

Provenance

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

Datasheet: XBLW datasheet (15 pp, sha256 6781db981abd06aa, retrieved 2026-10-16, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (vision), consensus claude-opus-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF