component
XL74LS138
Public Made by Adomby adom
XINLUDA Signal Switches, Multiplexers, Decoders, SOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownXL74LS138
XINLUDA · Signal Switches, Multiplexers, Decoders · SOP-16
XL74LS138 from XINLUDA, 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 | A | input | Binary select input A (least significant), which with B and C selects one of eight active-low outputs. |
| 2 | B | input | Binary select input B, which with A and C selects one of eight active-low outputs. |
| 3 | C | input | Binary select input C (most significant), which with A and B selects one of eight active-low outputs. |
| 4 | G2A | input | Active-low enable input G2A; must be low (together with G2B low and G1 high) to enable the decoder. |
| 5 | G2B | input | Active-low enable input G2B; must be low (together with G2A low and G1 high) to enable the decoder. |
| 6 | G1 | input | Active-high enable input G1; must be high (with G2A and G2B low) to enable the decoder. |
| 7 | Y7 | output | Active-low decoded output 7, low only when the select code is 111 and the decoder is enabled. |
| 8 | GND | power_in | Ground, the network ground terminal for all voltage values. |
| 9 | Y6 | output | Active-low decoded output 6, low only when the select code is 110 and the decoder is enabled. |
| 10 | Y5 | output | Active-low decoded output 5, low only when the select code is 101 and the decoder is enabled. |
| 11 | Y4 | output | Active-low decoded output 4, low only when the select code is 100 and the decoder is enabled. |
| 12 | Y3 | output | Active-low decoded output 3, low only when the select code is 011 and the decoder is enabled. |
| 13 | Y2 | output | Active-low decoded output 2, low only when the select code is 010 and the decoder is enabled. |
| 14 | Y1 | output | Active-low decoded output 1, low only when the select code is 001 and the decoder is enabled. |
| 15 | Y0 | output | Active-low decoded output 0, low only when the select code is 000 and the decoder is enabled. |
| 16 | VCC | power_in | Supply voltage, recommended 4.75 V to 5.25 V (5 V nominal). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | XINLUDA |
| Package | SOP-16 |
| Category | Logic |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
XL74LS138 - Footprint:
Package_SO:SOIC-16_3.9x9.9mm_P1.27mm - 3D model: SOP-16 (KiCad packages3D, STEP)
- 3D model files:
xl74ls138-etched.step/xl74ls138-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);xl74ls138.step/xl74ls138.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: XINLUDA datasheet (6 pp, sha256
c52ed1bf406b835f, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).