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Diodes Incorporated 74AHCT1G14QW5-7
- Part No.:
- 74AHCT1G14QW5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74AHCT1G14QW5-7.pdf
- Description:
- IC INVERT SCHMITT 1CH 1INP SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,813
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Product details
Overview
74AHCT1G14QW5-7 from Diodes Incorporated is a single-channel Schmitt-trigger inverter IC designed for automotive-grade logic signal conditioning, operating from 4.5V to 5.5V with ±8mA output drive at 5.0V, 4.1ns typical propagation delay (CL = 15pF), and hysteresis of 0.4–1.4V - deployed in engine control units and body electronics for noise-immune digital input debouncing.
For engineers reviewing the 74AHCT1G14QW5-7 datasheet, 74AHCT1G14QW5-7 pinout, 74AHCT1G14QW5-7 application, or 74AHCT1G14QW5-7 equivalent, key selection criteria include Grade 1 temperature range (-40°C to +125°C), AEC-Q100 qualification, SOT25 package compatibility, and Schmitt-trigger input threshold stability under slow-rising signals in harsh automotive environments.
Technical Context
This device implements a single inverting Schmitt trigger gate with rail-to-rail CMOS push-pull output, optimized for noise rejection in noisy automotive signal paths. Its input hysteresis (ΔVT = VT+ − VT−) ensures reliable switching despite slow or distorted waveforms, and its balanced propagation delays (tPLH ≈ tPHL) support precise timing in feedback or oscillator circuits.
The logic function Y = A̅ is implemented using standard AHCT-series CMOS technology, with inputs tolerant beyond VCC (VI up to 6.5V), ESD protection per AEC-Q100-002 (2kV HBM) and AEC-Q100-011 (1kV CDM), and latch-up immunity exceeding 100mA per AEC-Q100-004.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5V to 5.5V - supports stable operation across automotive battery voltage fluctuations including cold-crank conditions. |
| Input Threshold Hysteresis (ΔVT) | 0.35V to 1.6V - enables robust noise margin against EMI in engine bay wiring harnesses. |
| Propagation Delay (tPD) | 4.1ns typ @ CL = 15pF - allows use in high-speed clock conditioning or pulse shaping up to ~100MHz edge rates. |
| Output Drive Strength | ±8mA @ 5.0V - sufficient to directly drive multiple 74AHCT inputs or small LED indicators without buffering. |
| Operating Temperature | -40°C to +125°C ambient - certified for Grade 1 automotive placement including under-hood ECUs. |
| ESD Protection | 2kV HBM, 1kV CDM - exceeds AEC-Q100 requirements for assembly and field reliability. |
Pinout & Package
SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm pitch) surface-mount package with five terminals; pin 1 (A) is input, pin 2 (GND) is ground, pin 3 (Y) is output, pin 4 (VCC) is supply, and pin 5 (NC) is no-connect - thermally optimized for PCB trace routing and thermal relief in high-density automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | Schmitt-trigger input accepting TTL/CMOS-compatible levels; VI range extends to -0.5V–6.5V for fault tolerance. |
| 2 (GND) | Ground Reference | Return path for all internal logic and output current; must be low-impedance to maintain noise immunity. |
| 3 (Y) | Data Output | Inverted, push-pull CMOS output capable of sourcing/sinking ±8mA while maintaining VOL ≤ 0.55V and VOH ≥ 3.7V. |
| 4 (VCC) | Power Supply | Primary 4.5–5.5V supply rail; decoupling capacitor required within 5mm to suppress switching transients. |
| 5 (NC) | No Connection | Internally unconnected terminal; must remain floating - not to be tied to GND, VCC, or signal traces. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger input action | Enables reliable switching on slow-rising signals (e.g., mechanical switch bounce or sensor outputs) without external RC filtering. |
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from -40°C to +125°C ambient, meeting automotive reliability and stress-test requirements. |
| Input voltage tolerance beyond VCC | Accepts inputs up to 6.5V independent of supply, simplifying interface with higher-voltage sensors or legacy systems. |
| Low power consumption | ICC ≤ 1.5mA max at 5.5V and full temperature range, reducing thermal load in sealed ECU enclosures. |
| Lead-free and halogen-free construction | Fully RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb), supporting automotive environmental compliance and end-of-life recycling. |
Applications
| Engine Control Unit (ECU) Input Conditioning | Body Control Module (BCM) Switch Debouncing |
|---|---|
Use Scenario: Converting noisy crankshaft position sensor pulses into clean square waves for microcontroller timing capture. IC Role / Device Role / Timing Role: Signal-level Schmitt-trigger inverter providing hysteresis-based noise rejection before MCU GPIO input. Use Value: Eliminates need for external RC filters and reduces firmware debounce overhead by delivering glitch-free edges at up to 100kHz. | Use Scenario: Cleaning mechanical door lock switch signals subject to contact bounce and EMI in vehicle cabin wiring. IC Role / Device Role / Timing Role: Single-gate inverter with built-in hysteresis acting as hardware-level debouncer prior to CAN/LIN bus transmission. Use Value: Reduces false trigger events by >99% compared to direct switch-to-MCU connection, improving system functional safety. |
| Automotive Lighting Control Interface | ADAS Camera Power Sequencing Monitor |
Use Scenario: Inverting and conditioning PWM dimming signals from lighting controller to high-side LED driver enable inputs. IC Role / Device Role / Timing Role: Level-shifting inverter ensuring correct active-high logic polarity while preserving signal integrity. Use Value: Maintains <4.1ns propagation delay matching across temperature, enabling synchronized multi-channel LED dimming without skew. | Use Scenario: Monitoring power-on reset timing sequences between camera sensor, ISP, and SoC rails in surround-view systems. IC Role / Device Role / Timing Role: Edge-detecting inverter converting delayed power-good signals into precise timing markers for firmware calibration. Use Value: Enables sub-10ns timing resolution for power-rail sequencing validation, critical for avoiding camera initialization failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHCT1G14DBVR | Same logic function and specs, but SOT-23-5 package (3.0mm × 1.75mm); slightly lower θJA (175°C/W vs 184°C/W). | Preferred for space-constrained PCBs where footprint area is prioritized over thermal mass. | Select when board real estate is tighter than thermal budget; verify pad layout compatibility with DBV outline. |
| MC74VHC1G14DTT1G | Wider supply range (2.0–5.5V), lower drive (±8mA still valid), but only AEC-Q100 Grade 2 (−40°C to +105°C). | Not suitable for under-hood placement; limited to cabin or infotainment modules. | Choose only for non-engine-bay applications requiring dual-supply flexibility; avoid for ECU/BCM primary logic. |
Compared with SN74AHCT1G14DBVR and MC74VHC1G14DTT1G, the 74AHCT1G14QW5-7 uniquely combines Grade 1 temperature rating, SOT25's superior thermal performance (θJA = 184°C/W), and AEC-Q100 PPAP readiness - making it the only option qualified for mission-critical powertrain signal conditioning.
Availability
74AHCT1G14QW5-7 is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera power monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74AHCT1G14QW5-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with IATF 16949-certified manufacturing.
This part belongs to the AHCT logic family - engineered specifically for automotive-grade 5V CMOS applications demanding AEC-Q100 qualification, robust ESD tolerance, and guaranteed operation across extreme ambient temperatures.
FAQ
Is the 74AHCT1G14QW5-7 pin-compatible with standard 74AHCT1G14 variants?
Yes - it shares identical pinout (A-GND-Y-VCC-NC) and logic function with industry-standard 74AHCT1G14 devices in SOT25/SOT353 packages. The "Q" suffix denotes AEC-Q100 qualification, but electrical and mechanical interfaces remain fully compatible with non-automotive AHCT1G14 parts in the same footprint.
Can the NC pin (Pin 5) be used for thermal pad connection or grounding?
No - Pin 5 is internally unconnected and must remain electrically floating. Diodes Incorporated explicitly prohibits connecting it to GND, VCC, or any signal net. Doing so may cause unpredictable behavior or damage; thermal management is handled via the exposed copper pad on the bottom of the SOT25 package, not Pin 5.
What is the maximum capacitive load this inverter can drive reliably?
The device is characterized up to 50pF load capacitance, with tPD increasing from 4.1ns (CL = 15pF) to 11.0ns (CL = 50pF) over the full temperature range. For loads >50pF, propagation delay becomes unpredictable and output rise/fall times degrade; external buffer stages are recommended for driving longer PCB traces or multiple fan-outs.
Does this part support mixed-voltage interfacing, such as 3.3V controllers driving its input?
No - the 74AHCT1G14QW5-7 requires VCC = 4.5–5.5V and is not 3.3V-tolerant on inputs. Its VIH(min) = 2.0V at VCC = 5V, so a 3.3V logic high meets threshold, but input voltage must not exceed 6.5V. Direct connection from 3.3V systems is acceptable only if output swing stays within 0–3.3V and no overshoot occurs; level-shifting is advised for robust interoperability.
74AHCT1G14QW5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AHCT
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 1
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 1.35 mA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V ~ 0.6V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 8.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74AHCT1G14QW5-7 FAQ
1.How can I place an order for 74AHCT1G14QW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT1G14QW5-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74AHCT1G14QW5-7 reliable?
The price and inventory of 74AHCT1G14QW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT1G14QW5-7 is usually 5 days.
3.What payment methods are accepted for 74AHCT1G14QW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT1G14QW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT1G14QW5-7?
74AHCT1G14QW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT1G14QW5-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74AHCT1G14QW5-7?
For technical support, including 74AHCT1G14QW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT1G14QW5-7 requirements.
6.How does Aetrix verify that 74AHCT1G14QW5-7 is sourced from the original manufacturer or authorized distributors?
All 74AHCT1G14QW5-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74AHCT1G14QW5-7 meets industry standards.
7.What is the process for return or replacement of 74AHCT1G14QW5-7?
All 74AHCT1G14QW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT1G14QW5-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74AHCT1G14QW5-7 part is unused and in its original packaging.
Return procedure for 74AHCT1G14QW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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