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Nexperia USA Inc. 74VHCT14BQ,115
- Part No.:
- 74VHCT14BQ,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-VFQFN Exposed Pad
- Datasheet:
-
74VHCT14BQ,115.pdf
- Description:
- IC INVERTER 6CH 1-INP 14DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:102
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Product details
Overview
74VHCT14BQ,115 from Nexperia is a hex inverting Schmitt trigger IC designed for noise-immune signal conditioning in digital logic interfaces. It provides six independent TTL-level-compatible inverters with hysteresis (VT+ = 1.9 V, VT− = 0.5 V at VCC = 4.5 V), 8.0 ns typical propagation delay (CL = 50 pF), ±8 mA output drive, and operates across −40 °C to +125 °C in a DHVQFN14 package. It is used in debouncing mechanical switches and cleaning slow-rising clock or reset signals in industrial control modules.
For engineers reviewing the 74VHCT14BQ,115 datasheet, 74VHCT14BQ,115 pinout, 74VHCT14BQ,115 application, or 74VHCT14BQ,115 equivalent, key selection criteria include TTL input compatibility, Schmitt-trigger hysteresis width (1.4 V at VCC = 4.5 V), thermal-enhanced DHVQFN14 footprint (2.5 × 3 mm), guaranteed operation up to 125 °C, and IEC 61000-4-2 ESD robustness (2 kV HBM).
Technical Context
This device implements six independent CMOS-based Schmitt-trigger inverters with TTL-compatible input thresholds-ensuring interoperability with legacy 5 V LSTTL logic while maintaining low ICC (≤40 μA at VCC = 5.5 V). Its transfer characteristics are defined by dual threshold voltages (VT+, VT−) and fixed hysteresis (VH), enabling reliable waveform shaping of noisy or slowly transitioning inputs.
The DHVQFN14 package (SOT762-1) features an exposed thermal pad and 14 terminals in a leadless 2.5 × 3 × 0.85 mm body, supporting high-density PCB layouts and improved thermal performance over SO14 or TSSOP14 variants. All inputs accept voltages up to 7.0 V regardless of VCC, allowing mixed-voltage interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverting Schmitt trigger - transforms slow/noisy inputs into clean, jitter-free digital outputs with built-in hysteresis |
| Input Compatibility | TTL-level (VIH = 2.0 V min, VIL = 0.8 V max) - directly interfaces with 5 V LSTTL without level-shifting |
| Propagation Delay | 9.0 ns max (CL = 50 pF, VCC = 4.5–5.5 V) - enables reliable timing in sub-100 MHz digital signal conditioning paths |
| Output Drive | ±8 mA (VOH/VOL at VCC = 4.5 V) - sufficient to drive multiple 74-series inputs or small capacitive loads (≤50 pF) |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive modules, industrial PLCs, and power supply monitoring circuits |
| ESD Protection | HBM >2000 V, CDM >1000 V - withstands handling and board-level electrostatic events without latch-up or parametric shift |
| Supply Voltage Range | 4.5 V to 5.5 V - tightly regulated 5 V rail operation only; not functional below 4.5 V |
Pinout & Package
DHVQFN14 (SOT762-1) package: leadless, 2.5 × 3 × 0.85 mm body, exposed thermal pad (non-electrical unless connected to GND), 14 terminals, terminal 1 index area marked on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Data Input (1A–6A) | Independent Schmitt-trigger inputs accepting TTL-level signals; each has hysteresis and 7 V absolute max input rating |
| 2, 4, 6, 8, 10, 12 | Data Output (1Y–6Y) | Inverted, buffered outputs with rail-to-rail swing (VOH ≥ 3.7 V, VOL ≤ 0.55 V at IO = ±8 mA) |
| 7 | GND | Ground reference for all internal circuitry and output drivers; must be low-impedance for stable noise immunity |
| 14 | VCC | 5 V supply input; decoupling capacitor (100 nF) required within 1 cm for transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Guaranteed 1.4 V hysteresis (VH) at VCC = 4.5 V enables reliable switch debouncing and analog signal digitization |
| TTL input compatibility | VIH = 2.0 V min / VIL = 0.8 V max ensures direct connection to legacy 5 V microcontrollers and logic families |
| High-noise immunity | Input clamping current ±20 mA and 2 kV HBM ESD rating protect against transients in industrial environments |
| Thermal-enhanced package | DHVQFN14 (SOT762-1) provides 9.6 mW/K derating above 98 °C - supports sustained operation in enclosed enclosures |
| Wide temperature range | Specified from −40 °C to +125 °C - validated for use in motor drives, power converters, and outdoor telecom equipment |
Applications
| Industrial Switch Debouncing | Reset Signal Conditioning |
|---|---|
|
Use Scenario: Mechanical pushbuttons and limit switches generate contact bounce lasting 1–10 ms in factory automation panels. IC Role / Device Role / Timing Role: Each inverter acts as a standalone Schmitt-trigger filter; six channels condition multiple switch inputs simultaneously. Use Value: Eliminates false triggers without external RC networks or firmware polling, reducing BOM count and MCU interrupt load. |
Use Scenario: Power-on reset (POR) circuits produce slow-rising, noisy reset pulses during supply ramp-up. IC Role / Device Role / Timing Role: Inverts and sharpens the POR signal edge to meet microcontroller reset timing requirements (tRP, tRH). Use Value: Ensures deterministic reset assertion/deassertion with <10 ns jitter, preventing boot failures in embedded systems. |
| Relaxation Oscillator | Level Translation Interface |
|
Use Scenario: Low-cost timing generation for LED blinkers or status indicators where crystal precision is unnecessary. IC Role / Device Role / Timing Role: One inverter configured with external R-C feedback forms a self-oscillating relaxation oscillator. Use Value: Generates 1–100 kHz square waves using only two passive components - no external clock source required. |
Use Scenario: Interfacing 3.3 V FPGA I/O to legacy 5 V sensor outputs with marginal noise margins. IC Role / Device Role / Timing Role: Acts as a unidirectional level shifter: 5 V sensor output → Schmitt input → clean 5 V inverted output. Use Value: Restores noise margin via hysteresis while preserving signal integrity - avoids metastability in mixed-voltage domains. |
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 |
|---|---|---|---|
| SN74LV14APWR | CMOS-input variant (VIH = 2.0 V min), wider VCC range (2.0–5.5 V), slower max tpd (12.5 ns @ CL=50 pF) | Supports 3.3 V systems; unsuitable for strict 5 V TTL-only environments requiring VIH ≥ 2.0 V at VCC = 4.5 V | Select when operating below 4.5 V or needing dual-supply flexibility; verify input threshold alignment with source logic family. |
| MC74VHC14DT | CMOS-input version (VIH = 0.7×VCC), identical DHVQFN14 package, same 125 °C rating, lower ICC (20 μA typ) | Requires VCC ≥ 2.0 V for valid switching; incompatible with TTL-output sources unless level-shifted | Choose for ultra-low-power 2.0–5.5 V applications where input voltage tracking is acceptable and TTL compatibility is not required. |
Compared with SN74LV14APWR and MC74VHC14DT, the 74VHCT14BQ,115 uniquely guarantees TTL-level input recognition at 4.5–5.5 V while delivering the fastest propagation delay (9.0 ns) and highest ESD robustness in its thermal-enhanced QFN package - making it optimal for noise-prone 5 V industrial signal conditioning.
Availability
74VHCT14BQ,115 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, power supply supervisory circuits, and factory automation HMI panels requiring stable component supply across extended temperature ranges.
Supply support for 74VHCT14BQ,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 specializing in high-performance, energy-efficient logic, analog, and discrete components for automotive, industrial, and consumer markets.
The 74VHCT series targets robust 5 V digital interfacing in harsh environments, emphasizing TTL compatibility, wide temperature operation, and reliability-critical signal conditioning functions.
FAQ
What is the minimum recommended VCC for reliable operation of the 74VHCT14BQ,115?
The 74VHCT14BQ,115 requires a minimum VCC of 4.5 V to guarantee TTL-compatible input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and full output drive capability (±8 mA). Operation below 4.5 V may result in undefined input recognition or reduced noise margin, as confirmed in Table 5 of the datasheet.
Can the 74VHCT14BQ,115 drive a 100 pF capacitive load reliably?
No - the datasheet specifies dynamic performance only up to 50 pF (Table 7). At CL = 100 pF, propagation delay increases beyond 10.0 ns max and output rise/fall times degrade, risking setup/hold violations in downstream logic. For >50 pF loads, add a series resistor or buffer stage per channel.
Is the exposed thermal pad on the DHVQFN14 package electrically connected?
No - the thermal pad (terminal 7 in SOT762-1 outline) is not electrically tied to any internal node. Per section 5.1, it may remain floating or be soldered to GND for thermal improvement, but no electrical requirement exists. PCB land design should follow Nexperia's SOT762-1 footprint guidelines.
Does the 74VHCT14BQ,115 support hot-swap or live-insertion?
No - the device lacks bus-hold or Ioff protection. Applying input signals before VCC stabilization risks latch-up or excessive ICC due to forward-biased input clamps. Power sequencing must ensure VCC reaches 4.5 V before any input exceeds 0.5 V, as specified in Absolute Maximum Ratings (Table 4).
74VHCT14BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74VHCT
- 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)
74VHCT14BQ,115 FAQ
1.How can I place an order for 74VHCT14BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHCT14BQ,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 74VHCT14BQ,115 reliable?
The price and inventory of 74VHCT14BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHCT14BQ,115 is usually 5 days.
3.What payment methods are accepted for 74VHCT14BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHCT14BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHCT14BQ,115?
74VHCT14BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHCT14BQ,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 74VHCT14BQ,115?
For technical support, including 74VHCT14BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHCT14BQ,115 requirements.
6.How does Aetrix verify that 74VHCT14BQ,115 is sourced from the original manufacturer or authorized distributors?
All 74VHCT14BQ,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 74VHCT14BQ,115 meets industry standards.
7.What is the process for return or replacement of 74VHCT14BQ,115?
All 74VHCT14BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with 74VHCT14BQ,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 74VHCT14BQ,115 part is unused and in its original packaging.
Return procedure for 74VHCT14BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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