component
74AHCT1G126QSE-7
Public Made by Adomby adom
Diodes Incorporated Buffers, Drivers, Receivers, Transceivers, SOT-353. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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Symbol & Footprint
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PCB Footprint
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Datasheet
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Contents
README
markdown74AHCT1G126QSE-7
Diodes Incorporated · Buffers, Drivers, Receivers, Transceivers · SOT-353
74AHCT1G126QSE-7 from Diodes Incorporated, in a SOT-353. 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 | OE | input | Output enable, active HIGH; when OE is LOW the output Y is forced to the high-impedance (Z) state. |
| 2 | A | input | Data input with Schmitt-trigger action, not limited by VCC; at VCC = 5 V ±0.5 V, VIH is at least 2.0 V and VIL is at most 0.8 V, and unused inputs must be held at VCC or GND. |
| 3 | GND | power_in | Ground reference pin for the device. |
| 4 | Y | tri_state | 3-state data output; at VCC = 5 V ±0.5 V it is rated for ±8 mA (IOH -8 mA, IOL 8 mA). |
| 5 | VCC | power_in | Supply voltage, operating range 4.5 V to 5.5 V (absolute maximum -0.5 V to 6.5 V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-353 |
| Category | Logic |
| Pins | 5 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| High Level Output Voltage (IOH = -50µA) | VOH | 4.4 | 4.5 | V | VI = VIH or VIL, IOH = -50μA, VCC = 4.5V, TA = +25°C | 3 | |
| High Level Output Voltage (IOH = -50µA) | VOH | 4.4 | V | VI = VIH or VIL, IOH = -50μA, VCC = 4.5V, TA = -40°C to +85°C | 3 | ||
| High Level Output Voltage (IOH = -8mA) | VOH | 3.94 | V | VI = VIH or VIL, IOH = -8mA, VCC = 4.5V, TA = +25°C | 3 | ||
| High Level Output Voltage (IOH = -8mA) | VOH | 3.8 | V | VI = VIH or VIL, IOH = -8mA, VCC = 4.5V, TA = -40°C to +85°C | 3 | ||
| High Level Output Voltage (IOH = -8mA) | VOH | 3.7 | V | VI = VIH or VIL, IOH = -8mA, VCC = 4.5V, TA = -40°C to +125°C | 3 | ||
| Low Level Output Voltage (IOL = 50µA) | VOL | 0 | 0.1 | V | VI = VIH or VIL, IOL = 50μA, VCC = 4.5V, TA = +25°C | 3 | |
| Low Level Output Voltage (IOL = 50µA) | VOL | 0.1 | V | VI = VIH or VIL, IOL = 50μA, VCC = 4.5V, TA = -40°C to +85°C | 3 | ||
| Low Level Output Voltage (IOL = 8mA) | VOL | 0.36 | V | VI = VIH or VIL, IOL = 8mA, VCC = 4.5V, TA = +25°C | 3 | ||
| Low Level Output Voltage (IOL = 8mA) | VOL | 0.44 | V | VI = VIH or VIL, IOL = 8mA, VCC = 4.5V, TA = -40°C to +85°C | 3 | ||
| Low Level Output Voltage (IOL = 8mA) | VOL | 0.55 | V | VI = VIH or VIL, IOL = 8mA, VCC = 4.5V, TA = -40°C to +125°C | 3 | ||
| Z State Leakage Current | IOZ | 0.25 | μA | VI = 5.5V or GND, VO = 0 to 5.5V, VCC = 5.5V, TA = +25°C | 3 | ||
| Z State Leakage Current | IOZ | 2.5 | μA | VI = 5.5V or GND, VO = 0 to 5.5V, VCC = 5.5V, TA = -40°C to +85°C | 3 | ||
| Z State Leakage Current | IOZ | 10 | μA | VI = 5.5V or GND, VO = 0 to 5.5V, VCC = 5.5V, TA = -40°C to +125°C | 3 | ||
| Input Current | II | -0.1 | 0.1 | μA | VI = 5.5V or GND, VCC = 5.5V, TA = +25°C | 3 | |
| Input Current | II | -1 | 1 | μA | VI = 5.5V or GND, VCC = 5.5V, TA = -40°C to +85°C | 3 | |
| Input Current | II | -2 | 2 | μA | VI = 5.5V or GND, VCC = 5.5V, TA = -40°C to +125°C | 3 | |
| Additional Supply Current | ΔICC | 1.35 | mA | Per input pin; VI = 3.4V; other inputs at VCC or GND; IO = 0; VCC = 5.5V, TA = +25°C | 3 | ||
| Additional Supply Current | ΔICC | 1.5 | mA | Per input pin; VI = 3.4V; other inputs at VCC or GND; IO = 0; VCC = 5.5V, TA = -40°C to +85°C | 3 | ||
| Supply Current | ICC | 1 | μA | VI = 5.5V or GND, IO = 0, VCC = 5.5V, TA = +25°C | 3 | ||
| Supply Current | ICC | 10 | μA | VI = 5.5V or GND, IO = 0, VCC = 5.5V, TA = -40°C to +85°C | 3 | ||
| Supply Current | ICC | 40 | μA | VI = 5.5V or GND, IO = 0, VCC = 5.5V, TA = -40°C to +125°C | 3 | ||
| Input Capacitance | CI | 1.5 | 10 | pF | VI = VCC or GND, VCC = 5.5V, TA = +25°C | 3 | |
| Input Capacitance | CI | 10 | pF | VI = VCC or GND, VCC = 5.5V, TA = -40°C to +85°C | 3 | ||
| Operating Voltage | VCC | 4.5 | 5.5 | V | 3 | ||
| High-Level Input Voltage | VIH | 2 | V | VCC = 5V ± 0.5V | 3 | ||
| Low-Level Input Voltage | VIL | 0.8 | V | VCC = 5V ± 0.5V | 3 | ||
| Input Voltage | VI | 0 | 5.5 | V | 3 | ||
| Output Voltage | VO | 0 | V | Printed as 0 to VCC | 3 | ||
| High-Level Output Current | IOH | -8 | mA | VCC = 5V ± 0.5V | 3 | ||
| Low-Level Output Current | IOL | 8 | mA | VCC = 5V ± 0.5V | 3 | ||
| Input Transition Rise or Fall Rate | Δt/ΔV | 20 | ns/V | VCC = 5V ± 0.5V | 3 | ||
| Ambient Temperature | TA | -40 | 125 | °C | 3 | ||
| ESD Human Body Model Protection | ESD HBM | 2 | kV | 2 | |||
| ESD Charged Device Model Protection | ESD CDM | 1 | kV | 2 | |||
| Supply Voltage Range | VCC | -0.5 | 6.5 | V | 2 | ||
| Input Voltage Range | VI | -0.5 | 6.5 | V | 2 | ||
| Voltage Applied to Output in High or Low State | VO | -0.5 | V | Printed as VCC + 0.5 V upper bound | 2 | ||
| Input Clamp Current | IIK | -20 | mA | VI < 0 | 2 | ||
| Output Clamp Current | IOK | -20 | 20 | mA | VO < 0 or VO > VCC | 2 | |
| Continuous Output Current | IO | -25 | 25 | mA | VO = 0 to VCC | 2 | |
| Continuous Current Through VCC | ICC | 75 | mA | 2 | |||
| Continuous Current Through GND | IGND | -75 | mA | 2 | |||
| Operating Junction Temperature | TJ | -40 | 150 | °C | 2 | ||
| Storage Temperature | TSTG | -65 | 150 | °C | 2 | ||
| Total Power Dissipation | PD | 250 | mW | Note 6, derate at higher operating temperature | 2 | ||
| Thermal Resistance Junction-to-Ambient (SOT353) | JA | 385 | °C/W | Note 8, SOT353 | 4 | ||
| Thermal Resistance Junction-to-Case (SOT353) | JC | 164 | °C/W | Note 8, SOT353 | 4 | ||
| Propagation Delay A to Y | tPD | 1 | 7 | ns | VCC = 5V ± 0.5V, CL = 15pF, TA = -40°C to +125°C | 4 | |
| Propagation Delay A to Y | tPD | 1 | 9.5 | ns | VCC = 5V ± 0.5V, CL = 50pF, TA = -40°C to +125°C | 4 | |
| Output Enable Time OE to Y | tEN | 1 | 6.5 | ns | VCC = 5V ± 0.5V, CL = 15pF, TA = -40°C to +125°C | 4 | |
| Output Enable Time OE to Y | tEN | 1 | 9.5 | ns | VCC = 5V ± 0.5V, CL = 50pF, TA = -40°C to +125°C | 4 | |
| Output Disable Time OE to Y | tDIS | 1 | 8.5 | ns | VCC = 5V ± 0.5V, CL = 15pF, TA = -40°C to +125°C | 4 | |
| Output Disable Time OE to Y | tDIS | 1 | 11 | ns | VCC = 5V ± 0.5V, CL = 50pF, TA = -40°C to +125°C | 4 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 Weight: 0.0158 grams (Approximate) | 8 |
CAD (KiCad official)
- Symbol:
74AHCT1G126QSE-7 - Footprint:
Package_TO_SOT_SMD:SOT-353_SC-70-5 - 3D model: SOT-353 (KiCad packages3D, STEP)
- 3D model files:
74ahct1g126qse-7-etched.step/74ahct1g126qse-7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);74ahct1g126qse-7.step/74ahct1g126qse-7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (9 pp, sha256
f8231b3768f13bfb, retrieved 2026-10-18, tier: lcsc) - 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).