component
74HC126PW
Public Made by Adomby adom
Nexperia 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
markdown74HC126PW
Nexperia · Buffers, Drivers, Receivers, Transceivers · TSSOP-14
74HC126PW from Nexperia, 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 | Data enable input for buffer 1 (active HIGH); a LOW on 1OE puts output 1Y in the high-impedance OFF-state. |
| 2 | 1A | input | Data input 1A; inputs include clamp diodes, so current-limiting resistors can interface them to voltages above VCC. |
| 3 | 1Y | tri_state | Data output 1Y of buffer 1 with 3-state output, high-impedance when 1OE is LOW. |
| 4 | 2OE | input | Data enable input for buffer 2 (active HIGH); a LOW on 2OE puts output 2Y in the high-impedance OFF-state. |
| 5 | 2A | input | Data input 2A; inputs include clamp diodes, so current-limiting resistors can interface them to voltages above VCC. |
| 6 | 2Y | tri_state | Data output 2Y of buffer 2 with 3-state output, high-impedance when 2OE is LOW. |
| 7 | GND | power_in | Ground (0 V) reference for all voltages on the device. |
| 8 | 3Y | tri_state | Data output 3Y of buffer 3 with 3-state output, high-impedance when 3OE is LOW. |
| 9 | 3A | input | Data input 3A; inputs include clamp diodes, so current-limiting resistors can interface them to voltages above VCC. |
| 10 | 3OE | input | Data enable input for buffer 3 (active HIGH); a LOW on 3OE puts output 3Y in the high-impedance OFF-state. |
| 11 | 4Y | tri_state | Data output 4Y of buffer 4 with 3-state output, high-impedance when 4OE is LOW. |
| 12 | 4A | input | Data input 4A; inputs include clamp diodes, so current-limiting resistors can interface them to voltages above VCC. |
| 13 | 4OE | input | Data enable input for buffer 4 (active HIGH); a LOW on 4OE puts output 4Y in the high-impedance OFF-state. |
| 14 | VCC | power_in | Supply voltage; 2.0 V to 6.0 V for 74HC126 and 4.5 V to 5.5 V for 74HCT126 per the recommended operating conditions. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Nexperia |
| Package | TSSOP-14 |
| Category | Logic |
| Pins | 14 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| input voltage | VI | 0 | V | 4 | |||
| output voltage | VO | 0 | V | 4 | |||
| ambient temperature | Tamb | -40 | 25 | 125 | °C | 4 | |
| input transition rise and fall rate | Δt/ΔV | 625 | ns/V | VCC = 2.0 V | 4 | ||
| input transition rise and fall rate | Δt/ΔV | 1.67 | 139 | ns/V | VCC = 4.5 V | 4 | |
| input transition rise and fall rate | Δt/ΔV | 83 | ns/V | VCC = 6.0 V | 4 | ||
| supply voltage | VCC | 2 | 5 | 6 | V | 4 | |
| supply voltage | VCC | -0.5 | 7 | V | 3 | ||
| input clamping current | IIK | -20 | 20 | mA | VI < -0.5 V or VI > VCC + 0.5 V | 3 | |
| output clamping current | IOK | -20 | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 3 | |
| output current | IO | -35 | 35 | mA | -0.5 V < VO < VCC + 0.5 V | 3 | |
| supply current | ICC | 70 | mA | 3 | |||
| ground current | IGND | -70 | mA | 3 | |||
| storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| total power dissipation | Ptot | 500 | mW | Tamb = -40 °C to +125 °C | 3 | ||
| HIGH-level input voltage | VIH | 1.5 | 1.2 | V | VCC = 2.0 V | 4 | |
| HIGH-level input voltage | VIH | 3.15 | 2.4 | V | VCC = 4.5 V | 4 | |
| HIGH-level input voltage | VIH | 4.2 | 3.2 | V | VCC = 6.0 V | 4 | |
| LOW-level input voltage | VIL | 0.8 | 0.5 | V | VCC = 2.0 V | 4 | |
| LOW-level input voltage | VIL | 2.1 | 1.35 | V | VCC = 4.5 V | 4 | |
| LOW-level input voltage | VIL | 2.8 | 1.8 | V | VCC = 6.0 V | 4 | |
| HIGH-level output voltage | VOH | 1.9 | 2 | V | VI = VIH or VIL; IO = -20 μA; VCC = 2.0 V | 4 | |
| HIGH-level output voltage | VOH | 4.4 | 4.5 | V | VI = VIH or VIL; IO = -20 μA; VCC = 4.5 V | 4 | |
| HIGH-level output voltage | VOH | 5.9 | 6 | V | VI = VIH or VIL; IO = -20 μA; VCC = 6.0 V | 4 | |
| HIGH-level output voltage | VOH | 3.7 | 4.32 | V | VI = VIH or VIL; IO = -6.0 mA; VCC = 4.5 V | 4 | |
| HIGH-level output voltage | VOH | 5.2 | 5.81 | V | VI = VIH or VIL; IO = -7.8 mA; VCC = 6.0 V | 4 | |
| LOW-level output voltage | VOL | 0 | 0.1 | V | VI = VIH or VIL; IO = 20 μA; VCC = 2.0 V | 4 | |
| LOW-level output voltage | VOL | 0.15 | 0.4 | V | VI = VIH or VIL; IO = 6.0 mA; VCC = 4.5 V | 4 | |
| LOW-level output voltage | VOL | 0.16 | 0.4 | V | VI = VIH or VIL; IO = 7.8 mA; VCC = 6.0 V | 4 | |
| input leakage current | II | -1 | 1 | μA | VI = VCC or GND; VCC = 6.0 V | 4 | |
| OFF-state output current | IOZ | -10 | 10 | μA | VI = VIH or VIL; VCC = 6.0 V; VO = VCC or GND | 4 | |
| supply current | ICC | 160 | μA | VI = VCC or GND; IO = 0 A; VCC = 6.0 V | 4 | ||
| propagation delay | tpd | 30 | 150 | ns | nA to nY; see Fig. 4; VCC = 2.0 V | 5 | |
| propagation delay | tpd | 11 | 30 | ns | nA to nY; see Fig. 4; VCC = 4.5 V | 5 | |
| propagation delay | tpd | 9 | 26 | ns | nA to nY; see Fig. 4; VCC = 6.0 V | 5 | |
| enable time | ten | 41 | 190 | ns | nOE to nY; see Fig. 5; VCC = 2.0 V | 5 | |
| enable time | ten | 15 | 38 | ns | nOE to nY; see Fig. 5; VCC = 4.5 V | 5 | |
| enable time | ten | 12 | 32 | ns | nOE to nY; see Fig. 5; VCC = 6.0 V | 5 | |
| disable time | tdis | 41 | 190 | ns | nOE to nY; see Fig. 5; VCC = 2.0 V | 5 | |
| disable time | tdis | 15 | 38 | ns | nOE to nY; see Fig. 5; VCC = 4.5 V | 5 | |
| disable time | tdis | 12 | 32 | ns | nOE to nY; see Fig. 5; VCC = 6.0 V | 5 | |
| transition time | tt | 14 | 90 | ns | see Fig. 4; VCC = 2.0 V | 6 | |
| transition time | tt | 5 | 18 | ns | see Fig. 4; VCC = 4.5 V | 6 | |
| transition time | tt | 4 | 15 | ns | see Fig. 4; VCC = 6.0 V | 6 |
CAD (KiCad official)
- Symbol:
74HC126PW - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
74hc126pw-etched.step/74hc126pw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74hc126pw.step/74hc126pw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Nexperia datasheet (13 pp, sha256
9ba79df1ac62551b, retrieved 2026-10-17, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).