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SN74HCS126QPWRQ1

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Texas Instruments Buffers, Drivers, Receivers, Transceivers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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SN74HCS126QPWRQ1

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); sn74hcs126qpwrq1.step / sn74hcs126qpwrq1.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF