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XD74LS27

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XINLUDA Logic Gates, DIP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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XD74LS27

XINLUDA · Logic Gates · DIP-14

XD74LS27 from XINLUDA, in a DIP-14. 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 1A input Gate 1 input A; output 1Y is low if any of 1A, 1B, 1C is high (VIH min 2 V, VIL max 0.8 V).
2 1B input Gate 1 input B of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
3 2A input Gate 2 input A of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
4 2B input Gate 2 input B of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
5 2C input Gate 2 input C of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
6 2Y output Gate 2 output, Y = NOT(A+B+C); high-level output current -0.4 mA max, low-level 8 mA max.
7 GND power_in Ground reference (0 V).
8 3Y output Gate 3 output, Y = NOT(A+B+C); high-level output current -0.4 mA max, low-level 8 mA max.
9 3A input Gate 3 input A of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
10 3B input Gate 3 input B of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
11 3C input Gate 3 input C of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
12 1Y output Gate 1 output, Y = NOT(A+B+C); high-level output current -0.4 mA max, low-level 8 mA max.
13 1C input Gate 1 input C of the 3-input NOR gate (VIH min 2 V, VIL max 0.8 V).
14 VCC power_in Supply voltage, recommended 4.75 V to 5.25 V (5 V nominal), absolute maximum 7 V.

Key specifications

Parameter Value
Manufacturer XINLUDA
Package DIP-14
Category Logic
Pins 14

CAD (KiCad official)

  • Symbol: XD74LS27
  • Footprint: Package_DIP:DIP-14_W7.62mm
  • 3D model: DIP-14 (KiCad packages3D, STEP)
  • 3D model files: xd74ls27-etched.step / xd74ls27-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xd74ls27.step / xd74ls27.glb are the bare package body.

Provenance

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

  • Datasheet: XINLUDA datasheet (4 pp, sha256 ab26c9b50c7f2ed5, retrieved 2026-10-15, 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