component
SN74HCS126QPWRQ1
Public Made by Adomby adom
Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-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
markdownSN74HCS126QPWRQ1
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-14
SN74HCS126QPWRQ1 from Texas Instruments, in a TSSOP-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, active high; driving it low places output 1Y in the high-impedance state. |
| 2 | 1A | input | Channel 1 data input (Y = A); Schmitt-trigger input with hysteresis ΔVT, so it tolerates slow or noisy signals. |
| 3 | 1Y | tri_state | Channel 1 balanced CMOS 3-state buffer output, high-impedance when 1OE is low. |
| 4 | 2OE | input | Output enable for channel 2, active high; driving it low places output 2Y in the high-impedance state. |
| 5 | 2A | input | Channel 2 data input (Y = A); Schmitt-trigger input with hysteresis ΔVT, so it tolerates slow or noisy signals. |
| 6 | 2Y | tri_state | Channel 2 balanced CMOS 3-state buffer output, high-impedance when 2OE is low. |
| 7 | GND | power_in | Ground reference for the device; the ground must sink the total output and ICC current. |
| 8 | 3Y | tri_state | Channel 3 balanced CMOS 3-state buffer output, high-impedance when 3OE is low. |
| 9 | 3A | input | Channel 3 data input (Y = A); Schmitt-trigger input with hysteresis ΔVT, so it tolerates slow or noisy signals. |
| 10 | 3OE | input | Output enable for channel 3, active high; driving it low places output 3Y in the high-impedance state. |
| 11 | 4Y | tri_state | Channel 4 balanced CMOS 3-state buffer output, high-impedance when 4OE is low. |
| 12 | 4A | input | Channel 4 data input (Y = A); Schmitt-trigger input with hysteresis ΔVT, so it tolerates slow or noisy signals. |
| 13 | 4OE | input | Output enable for channel 4, active high; driving it low places output 4Y in the high-impedance state. |
| 14 | VCC | power_in | Positive supply, 2 V to 6 V recommended operating range; a 0.1-µF bypass capacitor is recommended close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |
CAD (KiCad official)
- Symbol:
SN74HCS126QPWRQ1 - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
sn74hcs126qpwrq1-etched.step/sn74hcs126qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sn74hcs126qpwrq1.step/sn74hcs126qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (26 pp, sha256
4405aa1df04c7b40, retrieved 2026-10-08, 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 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-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).