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onsemi MC74VHC14D
- Part No.:
- MC74VHC14D
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC74VHC14D.pdf
- Description:
- IC INVERT SCHMITT 6CH 1IN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,843
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Product details
Overview
MC74VHC14D from onsemi is a hex Schmitt-trigger inverter IC designed for noise-immune signal conditioning in digital interfaces. It features six independent inverters with hysteresis (VT+ = 3.85 V, VT− = 1.65 V at VCC = 5.5 V), 5.5 ns typical propagation delay at 5.0 V, full 5.0 V CMOS output swing, and operation across 2.0–5.5 V supply range - enabling robust level translation between 3.3 V and 5.0 V systems.
For engineers reviewing the MC74VHC14D datasheet, pinout, applications, or equivalent options, this device is selected for slow-edge signal reception, EMI-resistant clock buffering, mixed-voltage interface design, and automotive-grade signal conditioning where AEC-Q100 qualification and latchup immunity (>100 mA) are required.
Technical Context
The MC74VHC14D implements silicon-gate CMOS Schmitt-trigger logic with three-stage internal buffering to ensure high noise immunity (VNIH/VNIL = 28% VCC) and stable output drive. Its input structure tolerates up to 5.5 V regardless of VCC, allowing safe interfacing between 5 V and lower-voltage subsystems without external clamping.
Each inverter provides balanced tPLH/tPHL propagation delays, hysteresis voltage (VH = 0.50 V typ at VCC = 5.5 V), and low dynamic noise (VOLP ≤ 0.8 V). The device supports hot insertion and battery-backup scenarios via power-down protection on inputs and operates reliably from −55°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 5.5 V - enables direct use in both 3.3 V and 5.0 V logic domains without level shifters |
| Propagation Delay (tPD) | 5.5 ns (typ) at VCC = 5.0 V, CL = 15 pF - supports >100 MHz signal edge rates in clean digital paths |
| Hysteresis Voltage (VH) | 0.50 V (typ) at VCC = 5.5 V - rejects noise spikes up to ±250 mV on slow-rising/falling inputs |
| Input Voltage Tolerance | −0.5 V to +6.5 V - permits safe connection to 5 V buses even when VCC = 3.3 V |
| Output Drive Strength | ±8 mA at VCC = 4.5 V - sufficient to drive standard CMOS loads and short PCB traces |
| Quiescent ICC | 2.0 µA (max) at TA = 25°C - negligible static power draw in battery-powered wake-up circuits |
| Latchup Immunity | >100 mA - meets JEDEC JESD78 Class II, ensuring robustness against transient current faults |
Pinout & Package
MC74VHC14D is packaged in a 14-lead SOIC (Small Outline Integrated Circuit), case 751A, with 1.27 mm pitch and Pb-free finish. Dimensions: 8.55–8.75 mm × 3.80–4.00 mm × 1.35–1.75 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inverter Input (A1–A6) | Accepts slow or noisy digital signals; Schmitt-trigger threshold rejects sub-threshold glitches |
| 2, 4, 6, 8, 10, 12 | Inverter Output (Y1–Y6) | Provides rail-to-rail CMOS output swing (VOH ≥ 4.4 V, VOL ≤ 0.1 V at VCC = 4.5 V) |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance for noise immunity |
| 14 | VCC | Primary supply pin; supports 2.0–5.5 V operation and powers all six inverters and internal buffers |
Key Features
| Feature | Design Value |
|---|---|
| High Noise Immunity | VNIH = VNIL = 28% VCC ensures reliable switching in industrial EMI environments |
| Wide Supply Range | 2.0–5.5 V operation allows single-device support for 3.3 V microcontrollers and legacy 5 V peripherals |
| Input Overvoltage Tolerance | Inputs withstand −0.5 V to +6.5 V - eliminates need for external clamping diodes in mixed-supply systems |
| Automotive Qualification | AEC-Q100 qualified (−Q suffix variant) with PPAP capability for under-hood and ADAS signal conditioning |
| Low Dynamic Noise | VOLP ≤ 0.8 V (max) reduces crosstalk in dense PCB layouts with shared ground planes |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Conditioning analog sensor outputs (e.g., thermistor-based temperature sensing) into clean digital signals for MCU ADC trigger or GPIO interrupt. IC Role / Device Role / Timing Role: Schmitt-trigger inverter converts slow-rising thermistor divider voltage into sharp-edged logic pulses with noise margin. Use Value: Eliminates external RC filtering and software debouncing; enables reliable edge detection at <1 kHz signal rates. | Use Scenario: Debouncing mechanical switch inputs (door lock, window switch) in 12 V vehicle systems using 3.3 V microcontroller I/O. IC Role / Device Role / Timing Role: Six independent Schmitt inverters provide hardware-level contact bounce suppression before MCU sampling. Use Value: Reduces firmware complexity and prevents false triggers during vibration or ESD events per ISO 10605. |
| USB-to-UART Level Translation | Legacy Industrial Bus Receiver |
Use Scenario: Interfacing 3.3 V USB-to-UART bridge ICs (e.g., CP2102) to 5 V RS-232 transceivers or legacy peripherals. IC Role / Device Role / Timing Role: Inverter acts as unidirectional level shifter with hysteresis to reject noise on long UART traces. Use Value: Maintains signal integrity over 1 m cable runs without additional biasing or active translators. | Use Scenario: Receiving TTL/CMOS-compatible control signals from aging PLC modules operating at 5 V into modern 3.3 V FPGA I/O banks. IC Role / Device Role / Timing Role: Acts as a robust line receiver for slow, unterminated bus lines with ground offset and EFT susceptibility. Use Value: Prevents metastability and false state transitions caused by ringing or slow edges in 20+ year-old field wiring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV14APWR | Lower VCC range (1.65–5.5 V); slightly higher tPD (7.5 ns typ @ 3.3 V); no AEC-Q100 qualification | Optimized for ultra-low-voltage portable designs; lacks automotive stress testing and extended temp validation | Select when cost-sensitive consumer applications require LV logic compatibility but not automotive reliability |
| 74HC14D,653 | Slower speed (tPD = 20 ns typ @ 5 V); identical SOIC-14 package; non-AEC-Q100; wider commercial temp range only (−40°C to +125°C) | Suitable for non-safety-critical industrial controls where timing margin is ample and qualification is not mandated | Choose for legacy redesigns requiring drop-in replacement where speed penalty is acceptable and qualification is not required |
Compared with SN74LV14APWR and 74HC14D,653, the MC74VHC14D delivers superior noise immunity (28% VCC hysteresis vs. ~20%), faster propagation (5.5 ns vs. ≥7.5 ns), and verified AEC-Q100 compliance - making it the preferred choice for automotive and high-reliability industrial signal conditioning.
Availability
MC74VHC14D is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body control modules, USB-to-UART level translation, and legacy industrial bus receivers requiring stable component supply across extended temperature and automotive qualification requirements.
Supply support for MC74VHC14D 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
onsemi (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The MC74VHC14D belongs to onsemi's high-speed CMOS logic family, engineered specifically for noise-immune signal conditioning in mixed-voltage systems where reliability, wide supply range, and automotive qualification are critical.
FAQ
What is the maximum input voltage tolerance for MC74VHC14D?
The MC74VHC14D supports DC input voltages from −0.5 V to +6.5 V, independent of VCC level. This allows safe interfacing with 5 V signals even when powered from 3.3 V, eliminating the need for external clamping diodes in mixed-supply applications. The specification is validated per Absolute Maximum Ratings in the official onsemi datasheet (Rev. 13, Feb 2025).
Does MC74VHC14D support operation at 2.5 V supply?
Yes, MC74VHC14D is fully specified for operation from 2.0 V to 5.5 V. At VCC = 2.5 V, it maintains functional Schmitt thresholds (VT+ ≈ 1.5 V, VT− ≈ 0.7 V), propagation delay <15 ns (CL = 15 pF), and output drive ≥±4 mA - making it suitable for low-power 2.5 V system interfaces and battery-backed monitoring circuits.
Is MC74VHC14D pin-compatible with standard 74HC14 devices?
Yes, MC74VHC14D uses the same 14-pin SOIC package and identical pinout as industry-standard 74HC14 and 74LS14 devices. All six inverter inputs (pins 1,3,5,9,11,13) and outputs (pins 2,4,6,8,10,12) align directly, enabling drop-in replacement in existing PCB layouts - provided system-level timing and voltage compatibility are verified.
What is the hysteresis voltage (VH) of MC74VHC14D at 5.0 V supply?
At VCC = 5.0 V, the MC74VHC14D exhibits a typical hysteresis voltage (VH) of 0.40 V, calculated as VT+ (3.15 V) minus VT− (1.35 V). This value is confirmed in the DC Electrical Characteristics table (page 3 of datasheet Rev. 13) and ensures robust rejection of noise spikes up to ±200 mV on input signals.
Does MC74VHC14D meet AEC-Q100 requirements?
The base MC74VHC14D is not AEC-Q100 qualified; however, the variant MC74VHC14DTR2G−Q* (explicitly referenced in the ordering table) carries the −Q suffix, indicating AEC-Q100 qualification, PPAP capability, and automotive-specific process controls. For automotive applications, the −Q version must be specified and sourced.
MC74VHC14D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.9V ~ 1.65V
- Input Logic Level - High:
- 2.2V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 10.6ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74VHC14D FAQ
1.How can I place an order for MC74VHC14D through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC14D 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 MC74VHC14D reliable?
The price and inventory of MC74VHC14D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC14D is usually 5 days.
3.What payment methods are accepted for MC74VHC14D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC14D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC14D?
MC74VHC14D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC14D 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 MC74VHC14D?
For technical support, including MC74VHC14D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC14D requirements.
6.How does Aetrix verify that MC74VHC14D is sourced from the original manufacturer or authorized distributors?
All MC74VHC14D 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 MC74VHC14D meets industry standards.
7.What is the process for return or replacement of MC74VHC14D?
All MC74VHC14D units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC14D, 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 MC74VHC14D part is unused and in its original packaging.
Return procedure for MC74VHC14D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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