component
sn74ahct126qdrq1
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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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README
markdownSN74AHCT126QDRQ1
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · SOIC-14
SN74AHCT126QDRQ1 from Texas Instruments, in a SOIC-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 | 1OE | input | Output enable for channel 1; drives 1Y when high, high-impedance when low. |
| 2 | 1A | input | Data input for channel 1; TTL-compatible, VIL ≤ 0.8V, VIH ≥ 2V. |
| 3 | 1Y | tri_state | Three-state output for channel 1; follows 1A when 1OE high (±8mA @ 5V), high-impedance when 1OE low. |
| 4 | 2OE | input | Output enable for channel 2; drives 2Y when high, high-impedance when low. |
| 5 | 2A | input | Data input for channel 2; TTL-compatible, VIL ≤ 0.8V, VIH ≥ 2V. |
| 6 | 2Y | tri_state | Three-state output for channel 2; follows 2A when 2OE high (±8mA @ 5V), high-impedance when 2OE low. |
| 7 | GND | power_in | Ground reference pin. |
| 8 | 3Y | tri_state | Three-state output for channel 3; follows 3A when 3OE high (±8mA @ 5V), high-impedance when 3OE low. |
| 9 | 3A | input | Data input for channel 3; TTL-compatible, VIL ≤ 0.8V, VIH ≥ 2V. |
| 10 | 3OE | input | Output enable for channel 3; drives 3Y when high, high-impedance when low. |
| 11 | 4Y | tri_state | Three-state output for channel 4; follows 4A when 4OE high (±8mA @ 5V), high-impedance when 4OE low. |
| 12 | 4A | input | Data input for channel 4; TTL-compatible, VIL ≤ 0.8V, VIH ≥ 2V. |
| 13 | 4OE | input | Output enable for channel 4; drives 4Y when high, high-impedance when low. |
| 14 | VCC | power_in | Power supply voltage; 4.5V to 5.5V recommended operating range. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-14 |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74AHCT126QDRQ1 - Footprint:
Package_SO:SOIC-14_3.9x8.7mm_P1.27mm - 3D model: SOIC-14 (KiCad packages3D, STEP)
- 3D model files:
sn74ahct126qdrq1-etched.step/sn74ahct126qdrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74ahct126qdrq1.step/sn74ahct126qdrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (30 pp, sha256
7161780ff9b93586, retrieved 2026-09-24, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).
Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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