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CD74HC125QPWRQ1
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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.
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
markdownCD74HC125QPWRQ1
Texas Instruments · Buffers, Drivers, Receivers, Transceivers · TSSOP-14
CD74HC125QPWRQ1 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 | Input Channel 1, Output Enable, Active Low; a low level enables output 1Y and a high level places it in the high-impedance state. |
| 2 | 1A | input | Input Channel 1, Input A; buffer data input for channel 1. |
| 3 | 1Y | output | Output Channel 1, Output Y; three-state buffer output for channel 1. |
| 4 | 2OE | input | Input Channel 2, Output Enable, Active Low; a low level enables output 2Y and a high level places it in the high-impedance state. |
| 5 | 2A | input | Input Channel 2, Input A; buffer data input for channel 2. |
| 6 | 2Y | output | Output Channel 2, Output Y; three-state buffer output for channel 2. |
| 7 | GND | power_in | Ground reference for the device. |
| 8 | 3Y | output | Output Channel 3, Output Y; three-state buffer output for channel 3. |
| 9 | 3A | input | Input Channel 3, Input A; buffer data input for channel 3. |
| 10 | 3OE | input | Input Channel 3, Output Enable, Active Low; a low level enables output 3Y and a high level places it in the high-impedance state. |
| 11 | 4Y | output | Output Channel 4, Output Y; three-state buffer output for channel 4. |
| 12 | 4A | input | Input Channel 4, Input A; buffer data input for channel 4. |
| 13 | 4OE | input | Input Channel 4, Output Enable, Active Low; a low level enables output 4Y and a high level places it in the high-impedance state. |
| 14 | VCC | power_in | Positive supply; recommended operating range 2 V to 6 V, absolute maximum 7 V. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply voltage | VCC | -0.5 | 7 | V | 3 | ||
| Input clamp current | IIK | -20 | 20 | mA | VI < -0.5 V or VI > VCC + 0.5 V | 3 | |
| Output clamp current | IOK | -20 | 20 | mA | VO < -0.5 V or VO > VCC + 0.5 V | 3 | |
| Continuous output current | IO | -25 | 25 | mA | VO > -0.5 V or VO < VCC + 0.5 V | 3 | |
| Continuous current through VCC or GND | -70 | 70 | mA | 3 | |||
| Junction temperature | TJ | 150 | °C | 3 | |||
| Storage temperature | Tstg | -65 | 150 | °C | 3 | ||
| Supply voltage | VCC | 2 | 5 | 6 | V | 4 | |
| High-level input voltage | VIH | 1.5 | V | VCC = 2 V | 4 | ||
| High-level input voltage | VIH | 3.15 | V | VCC = 4.5 V | 4 | ||
| High-level input voltage | VIH | 4.2 | V | VCC = 6 V | 4 | ||
| Low-level input voltage | VIL | 0.5 | V | VCC = 2 V | 4 | ||
| Low-level input voltage | VIL | 1.35 | V | VCC = 4.5 V | 4 | ||
| Low-level input voltage | VIL | 1.8 | V | VCC = 6 V | 4 | ||
| Input transition rise and fall rate | Δt/Δv | 1000 | ns | VCC = 2 V | 4 | ||
| Input transition rise and fall rate | Δt/Δv | 500 | ns | VCC = 4.5 V | 4 | ||
| Input transition rise and fall rate | Δt/Δv | 400 | ns | VCC = 6 V | 4 | ||
| Operating free-air temperature | TA | -40 | 125 | °C | 4 | ||
| High-level output voltage | VOH | 1.9 | V | VI = VIH or VIL; IOH = -20 µA; VCC = 2 V | 5 | ||
| High-level output voltage | VOH | 4.4 | V | VI = VIH or VIL; IOH = -20 µA; VCC = 4.5 V | 5 | ||
| High-level output voltage | VOH | 5.9 | V | VI = VIH or VIL; IOH = -20 µA; VCC = 6 V | 5 | ||
| High-level output voltage | VOH | 3.7 | V | VI = VIH or VIL; IOH = -6 mA; VCC = 4.5 V | 5 | ||
| High-level output voltage | VOH | 5.2 | V | VI = VIH or VIL; IOH = -7.8 mA; VCC = 6 V | 5 | ||
| Low-level output voltage | VOL | 0.1 | V | VI = VIH or VIL; IOL = 20 µA; VCC = 2 V | 5 | ||
| Low-level output voltage | VOL | 0.4 | V | VI = VIH or VIL; IOL = 6 mA; VCC = 4.5 V | 5 | ||
| Input leakage current | II | -1 | 1 | µA | VI = VCC or GND; VCC = 6 V | 5 | |
| Supply current | ICC | 8 | 160 | µA | VI = VCC or GND; IO = 0 mA; VCC = 6 V | 5 | |
| Off-state output current | IOZ | -10 | 10 | µA | VI = VIL or VIH; VCC = 6 V | 5 | |
| Propagation delay A to Y | tpd | 150 | ns | CL = 50 pF; VCC = 2 V | 5 | ||
| Propagation delay A to Y | tpd | 30 | ns | CL = 50 pF; VCC = 4.5 V | 5 | ||
| Propagation delay A to Y | tpd | 26 | ns | CL = 50 pF; VCC = 6 V | 5 | ||
| Enable time OE to Y | ten | 190 | ns | CL = 50 pF; VCC = 2 V | 5 | ||
| Enable time OE to Y | ten | 38 | ns | CL = 50 pF; VCC = 4.5 V | 5 | ||
| Enable time OE to Y | ten | 32 | ns | CL = 50 pF; VCC = 6 V | 5 | ||
| Disable time OE to Y | tdis | 190 | ns | CL = 50 pF; VCC = 2 V | 5 | ||
| Disable time OE to Y | tdis | 38 | ns | CL = 50 pF; VCC = 4.5 V | 5 | ||
| Disable time OE to Y | tdis | 32 | ns | CL = 50 pF; VCC = 6 V | 5 | ||
| Transition time Y | tt | 90 | ns | CL = 50 pF; VCC = 2 V | 5 | ||
| Transition time Y | tt | 18 | ns | CL = 50 pF; VCC = 4.5 V | 5 | ||
| Transition time Y | tt | 15 | ns | CL = 50 pF; VCC = 6 V | 5 | ||
| Human body model ESD | V(ESD) | -2000 | 2000 | V | HBM per AEC Q100-002 | 4 | |
| Charged device model ESD | V(ESD) | -1000 | 1000 | V | CDM per AEC Q100-011 | 4 | |
| Junction-to-ambient thermal resistance | RθJA | 151.7 | °C/W | PW (TSSOP) 14 pins | 4 |
CAD (KiCad official)
- Symbol:
CD74HC125QPWRQ1 - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
cd74hc125qpwrq1-etched.step/cd74hc125qpwrq1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cd74hc125qpwrq1.step/cd74hc125qpwrq1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (22 pp, sha256
dd5699a7d6a6c1a7, retrieved 2026-10-17, tier: manufacturer) - 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), 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).