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XD74LS42

Public Made by Adom

by adom

XINLUDA Signal Switches, Multiplexers, Decoders, DIP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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XD74LS42

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

XD74LS42 from XINLUDA, 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 0 output Active-low decimal output 0, low only for BCD input 0000; IOL max 8 mA, IOH -400 µA.
2 1 output Active-low decimal output 1, low only for BCD input 0001; IOL max 8 mA, IOH -400 µA.
3 2 output Active-low decimal output 2, low only for BCD input 0010; IOL max 8 mA, IOH -400 µA.
4 3 output Active-low decimal output 3, low only for BCD input 0011; IOL max 8 mA, IOH -400 µA.
5 4 output Active-low decimal output 4, low only for BCD input 0100; IOL max 8 mA, IOH -400 µA.
6 5 output Active-low decimal output 5, low only for BCD input 0101; IOL max 8 mA, IOH -400 µA.
7 6 output Active-low decimal output 6, low only for BCD input 0110; IOL max 8 mA, IOH -400 µA.
8 GND power_in Ground, 0 V reference.
9 7 output Active-low decimal output 7, low only for BCD input 0111; IOL max 8 mA, IOH -400 µA.
10 8 output Active-low decimal output 8, low only for BCD input 1000; IOL max 8 mA, IOH -400 µA.
11 9 output Active-low decimal output 9, low only for BCD input 1001; IOL max 8 mA, IOH -400 µA.
12 D input BCD input D (weight 8, MSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V.
13 C input BCD input C (weight 4), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V.
14 B input BCD input B (weight 2), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V.
15 A input BCD input A (weight 1, LSB), diode-clamped; VIH min 2 V, VIL max 0.8 V, max input voltage 7 V.
16 VCC power_in Supply voltage, 4.75 V to 5.25 V recommended, 7 V absolute maximum.

Key specifications

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

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply voltage VCC 4.75 5 5.25 V 6
High-level output current IOH -400 μA 6
Low-level output current IOL 8 mA 6
Operating free-air temperature TA 0 70 C 6
High-level input voltage VIH 2 V 6
Low-level input voltage VIL 0.8 V 6
Input clamp voltage VIK -1.5 V VCC = MIN, II = −18 mA 6
High-level output voltage VOH 2.7 3.5 V VCC = MIN, VIL = 0.8 V, VIH = 2 V, IOH = −400 μA 6
Low-level output voltage VOL 0.25 0.4 V VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 4 mA 6
Low-level output voltage VOL 0.35 0.5 V VCC = MIN, VIH = 2 V, VIL = VIL MAX, IOL = 8 mA 6
Input current at maximum input voltage II 0.1 mA VCC = MAX, VI = 7 V 6
High-level input current IIH 20 μA VCC = MAX, VI = 2.7 V 6
Low-level input current IIL -0.4 mA VCC = MAX, VI = 0.4 V 6
Short-circuit output current IOS -20 -100 mA VCC = MAX 6
Supply current ICC 10.4 13 mA VCC = MAX, Output open, All inputs at 4.5V 6
Propagation delay time, low-to-high-level output tPLH 15 25 ns VCC = 5 V, TA = 25°C, CL = 15 pF, RL = 2 k 7
Propagation delay time, high-to-low-level output tPHL 20 30 ns VCC = 5 V, TA = 25°C, CL = 15 pF, RL = 2 k 7
Supply voltage VCC 7 V 5
Input voltage (74LS42) VI 7 V 5
Operating free-air temperature range (DIP package) TA 0 70 C 5
Storage temperature range Tstg -65 150 C 5

CAD (KiCad official)

  • Symbol: XD74LS42
  • Footprint: Package_DIP:DIP-16_W7.62mm
  • 3D model: DIP-16 (KiCad packages3D, STEP)
  • 3D model files: xd74ls42-etched.step / xd74ls42-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); xd74ls42.step / xd74ls42.glb are the bare package body.

Provenance

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

  • Datasheet: XINLUDA datasheet (8 pp, sha256 7013e2ac00e79456, retrieved 2026-10-16, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text+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