component
SN74HC126DR
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, SOIC-14. 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
markdownSN74HC126DR
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOIC-14
SN74HC126DR from Texas Instruments, in a SOIC-14. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1OE | input | Channel 1 Output Enable input; when low, output 1Y is driven to high-impedance state. |
| 2 | 1A | input | Channel 1 Input A; input signal to be replicated at 1Y when 1OE is high. |
| 3 | 1Y | tri_state | Channel 1 Output Y; tri-state buffered output equal to 1A when 1OE is high, high-impedance when 1OE is low. |
| 4 | 2OE | input | Channel 2 Output Enable input; when low, output 2Y is driven to high-impedance state. |
| 5 | 2A | input | Channel 2 Input A; input signal to be replicated at 2Y when 2OE is high. |
| 6 | 2Y | tri_state | Channel 2 Output Y; tri-state buffered output equal to 2A when 2OE is high, high-impedance when 2OE is low. |
| 7 | GND | power_in | Ground; return path for supply current and logic reference voltage. |
| 8 | 3Y | tri_state | Channel 3 Output Y; tri-state buffered output equal to 3A when 3OE is high, high-impedance when 3OE is low. |
| 9 | 3A | input | Channel 3 Input A; input signal to be replicated at 3Y when 3OE is high. |
| 10 | 3OE | input | Channel 3 Output Enable input; when low, output 3Y is driven to high-impedance state. |
| 11 | 4Y | tri_state | Channel 4 Output Y; tri-state buffered output equal to 4A when 4OE is high, high-impedance when 4OE is low. |
| 12 | 4A | input | Channel 4 Input A; input signal to be replicated at 4Y when 4OE is high. |
| 13 | 4OE | input | Channel 4 Output Enable input; when low, output 4Y is driven to high-impedance state. |
| 14 | VCC | power_in | Positive power supply; operating voltage range 2 V to 6 V per Recommended Operating Conditions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74HC126DR - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
sn74hc126dr-etched.step/sn74hc126dr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hc126dr.step/sn74hc126dr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (37 pp, sha256
e2fd947a824fca68, retrieved 2026-09-23, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.2, primaryclaude-haiku-4-5-20251001(text), consensusclaude-sonnet-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).