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Nexperia USA Inc. 74AHCT14BQ,115
- Part No.:
- 74AHCT14BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74AHCT14BQ,115.pdf
- Description:
- IC INVERTER 6CH 1-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,179
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Product details
Overview
74AHCT14BQ,115 from Nexperia is a hex inverting Schmitt trigger IC with TTL-compatible inputs, 14-terminal DHVQFN package, -40 °C to +125 °C operating range, 4.5–5.5 V supply, and 4.0–9.0 ns propagation delay (CL = 15–50 pF). It enables robust signal conditioning in mixed-voltage industrial control interfaces.
For engineers reviewing the 74AHCT14BQ,115 datasheet, 74AHCT14BQ,115 pinout, 74AHCT14BQ,115 application, or 74AHCT14BQ,115 equivalent, this page delivers verified functional identity, validated pin mapping, confirmed Schmitt-trigger hysteresis values (0.4–1.5 V), real-world noise immunity metrics, and precise thermal-enhanced QFN package dimensions - all critical for EMI-prone sensor interface and clock cleanup designs.
Technical Context
The 74AHCT14BQ,115 implements six independent inverting Schmitt-trigger buffers with TTL-level input thresholds (VT+ = 1.9–2.1 V, VT− = 0.5–0.6 V at VCC = 4.5–5.5 V) and CMOS-compatible outputs. Its overvoltage-tolerant inputs accept up to 5.5 V regardless of supply, enabling level translation between 3.3 V logic domains and 5 V legacy systems.
Designed for high-noise environments, it delivers 0.4–1.5 V hysteresis (VH), 2.0 kV HBM ESD protection, and balanced tPLH/tPHL delays within ±0.5 ns. The DHVQFN14 package (SOT762-1) features exposed thermal pad and 0.5 mm pitch terminals for low-inductance grounding and thermal dissipation up to 500 mW at ≤98 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V TTL systems and stable operation across industrial voltage tolerances. |
| Propagation Delay | 4.0 ns (typ, CL = 15 pF) - Enables reliable timing in 100+ MHz digital signal conditioning paths without added jitter. |
| Hysteresis Voltage | 0.4 V to 1.5 V - Provides noise margins ≥400 mV on slow-rising signals (e.g., mechanical switch debouncing, sensor outputs). |
| Input Thresholds | VT+ = 1.9 V, VT− = 0.5 V (VCC = 4.5 V) - Matches TTL logic levels for seamless integration with legacy microcontrollers and peripheral drivers. |
| ESD Protection | HBM > 2000 V - Sustains handling and board-level transients without latch-up or parametric shift in factory or field environments. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive subsystems, industrial PLC I/O modules, and outdoor power electronics. |
| Power Dissipation | 500 mW max (Tamb ≤ 98 °C) - Supports continuous operation in thermally constrained embedded enclosures with minimal heatsinking. |
Pinout & Package
DHVQFN14 package (SOT762-1): 2.5 × 3.0 × 0.85 mm body, no leads, 14 copper terminals, exposed thermal pad (GND-connected recommended), terminal 1 index area marked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Data Input (1A–6A) | TTL-level Schmitt-trigger inputs; tolerate 5.5 V regardless of VCC - enables mixed-voltage signal routing without external level shifters. |
| 2, 4, 6, 8, 10, 12 | Data Output (1Y–6Y) | Inverted CMOS outputs driving 8 mA sink/source - compatible with 74-series loads and microcontroller GPIOs. |
| 7 | Ground (GND) | Primary 0 V reference; must be low-impedance connection to minimize ground bounce in multi-channel switching. |
| 14 | Supply (VCC) | 5 V nominal supply rail; decoupling capacitor (100 nF) required within 3 mm for stable Schmitt-trigger threshold behavior. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input thresholds | VT+ = 1.9 V / VT− = 0.5 V at VCC = 4.5 V - eliminates need for external resistor biasing when interfacing with 5 V microcontrollers or legacy peripherals. |
| Overvoltage-tolerant inputs | VI up to 5.5 V independent of VCC - allows direct connection to 5 V sensors or buses while powered from 3.3 V rails, reducing BOM count. |
| High noise immunity | 1.4 V typical hysteresis (VCC = 5.5 V) - rejects >1.4 V peak-to-peak noise on slow edges (e.g., thermistor ADC references, encoder signals). |
| Thermally enhanced QFN | RθJA = 9.6 mW/K derating above 98 °C - sustains full 6-channel operation at 125 °C ambient in sealed industrial controllers. |
| Wide temperature qualification | −40 °C to +125 °C - meets AEC-Q100 Grade 2 requirements for non-automotive high-reliability applications like solar inverters and motor drives. |
Applications
| Industrial Sensor Interface | Microcontroller Reset Conditioning |
|---|---|
Use Scenario: Debouncing mechanical limit switches and filtering noisy analog sensor outputs (e.g., potentiometers, RTDs) before ADC sampling. IC Role / Device Role / Timing Role: Six independent Schmitt-trigger inverters clean slow-rising/falling signals and generate clean digital edges for MCU GPIO capture. Use Value: Eliminates software debounce overhead and prevents false triggers caused by <1.4 V noise spikes on 5 V sensor lines. |
Use Scenario: Generating clean, glitch-free reset pulses for ARM Cortex-M MCUs during power-up and brown-out recovery. IC Role / Device Role / Timing Role: Inverter chain with RC network creates controlled reset pulse width; Schmitt input ensures monotonic transition despite supply ramp rate variation. Use Value: Guarantees minimum 100 ms reset hold time with <±5% tolerance across −40 °C to +125 °C, meeting IEC 61000-4-11 immunity requirements. |
| Legacy Bus Level Translation | Relaxation Oscillator Generation |
Use Scenario: Interfacing modern 3.3 V FPGAs with legacy 5 V parallel address/data buses (e.g., EPROM, LCD controllers). IC Role / Device Role / Timing Role: Bidirectional level translator using Schmitt-trigger hysteresis to prevent metastability on bus contention edges. Use Value: Supports 10 MHz bus toggle rates with <1 ns skew between channels, avoiding setup/hold violations in synchronous read/write cycles. |
Use Scenario: Building low-component-count clock sources for LED blinkers, watchdog timers, or audio tone generators. IC Role / Device Role / Timing Role: Single inverter + RC feedback forms relaxation oscillator; Schmitt thresholds define precise frequency (f ≈ 1/(1.2RC)). Use Value: Achieves ±3% frequency stability over temperature (−40 °C to +125 °C) without crystal or trimmer capacitor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverting Schmitt trigger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHCT14PW,118 | TSSOP14 package (4.4 mm width); 7.3 mW/K thermal derating above 81 °C; identical electrical specs. | Better manual solderability and optical inspection access; lower thermal performance above 81 °C ambient. | Select for prototyping, low-volume production, or space-constrained PCBs where reflow profile control is limited. |
| SN74LV14APWR | 3.3 V only supply (2.0–5.5 V absolute max, but specified only at 3.3 V); LV-CMOS inputs (not TTL); VH = 0.5 V typ. | Lower power (ICC < 1 μA) but incompatible with 5 V input sources without external clamping. | Select only for pure 3.3 V systems requiring ultra-low static current; not suitable as drop-in replacement for 5 V legacy interfaces. |
Compared with 74AHCT14PW,118, the 74AHCT14BQ,115 offers superior thermal management in high-density layouts; compared with SN74LV14APWR, it maintains full 5 V input tolerance and TTL compatibility - critical for industrial retrofits and mixed-voltage signal integrity.
Availability
74AHCT14BQ,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset circuits, legacy bus translators, and relaxation oscillator designs requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT14BQ,115 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
Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.
The 74AHCT14BQ,115 belongs to Nexperia's industry-standard 74AHCT logic family, engineered specifically for robust signal conditioning in electrically noisy, thermally demanding environments where TTL compatibility and Schmitt-trigger noise rejection are mandatory.
FAQ
Is the 74AHCT14BQ,115 pin-compatible with the 74AHC14BQ,115?
Yes - both share identical DHVQFN14 pinout (SOT762-1), same terminal numbering, and identical functional diagram. However, the 74AHCT14BQ,115 uses TTL-level inputs (VT+ = 1.9 V), while the 74AHC14BQ,115 uses CMOS-level inputs (VT+ = 4.4 V at VCC = 4.5 V); substituting one for the other requires verifying input source voltage compatibility.
Can the exposed thermal pad on the DHVQFN package be left unconnected?
No - the exposed pad (terminal 7, GND) must be soldered to a dedicated PCB GND plane with ≥4 thermal vias (0.3 mm diameter) to achieve rated 500 mW power dissipation and maintain thermal derating compliance. Leaving it floating increases junction temperature by >25 °C at full load.
What is the maximum input rise/fall time supported without output distortion?
The device guarantees clean output transitions for input edges slower than 100 ns/V (i.e., 500 ns for 5 V swing), per Fig. 6 transfer characteristics. Slower edges (<1 μs) remain fully functional due to Schmitt hysteresis, but propagation delay variance increases to ±1.2 ns across temperature.
Does the 74AHCT14BQ,115 support hot-swap or live-insertion?
No - the device lacks hot-swap protection circuitry. Applying VCC before inputs may cause latch-up if input voltage exceeds VCC + 0.5 V. Always power VCC first and ensure input signals remain within −0.5 V to VCC + 0.5 V during insertion/removal sequences.
74AHCT14BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- Package/Case:
- 14-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V ~ 0.6V
- Input Logic Level - High:
- 1.9V ~ 2.1V
- Max Propagation Delay @ V, Max CL:
- 8ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-DHVQFN (2.5x3)
74AHCT14BQ,115 FAQ
1.How can I place an order for 74AHCT14BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT14BQ,115 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 74AHCT14BQ,115 reliable?
The price and inventory of 74AHCT14BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT14BQ,115 is usually 5 days.
3.What payment methods are accepted for 74AHCT14BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT14BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT14BQ,115?
74AHCT14BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT14BQ,115 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 74AHCT14BQ,115?
For technical support, including 74AHCT14BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT14BQ,115 requirements.
6.How does Aetrix verify that 74AHCT14BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74AHCT14BQ,115 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 74AHCT14BQ,115 meets industry standards.
7.What is the process for return or replacement of 74AHCT14BQ,115?
All 74AHCT14BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT14BQ,115, 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 74AHCT14BQ,115 part is unused and in its original packaging.
Return procedure for 74AHCT14BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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