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onsemi MC74HC14ADTEL
- Part No.:
- MC74HC14ADTEL
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74HC14ADTEL.pdf
- Description:
- IC INVERT SCHMITT 6CH 1IN 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
MC74HC14ADTEL from onsemi is a hex Schmitt-trigger inverter IC in SOIC-14 package, delivering hysteresis-based noise immunity with VT+ = 3.15 V and VT– = 2.05 V at VCC = 4.5 V, 10 LSTTL load drive capability, and operation across 2–6 V supply range - used for signal conditioning in industrial sensor interfaces and reset circuit debouncing.
For engineers reviewing the MC74HC14ADTEL datasheet, pinout, applications, or equivalent options, this page delivers verified pin mapping, real-world timing specs (tPLH/tPHL = 19 ns @ 4.5 V), hysteresis voltage range (0.4–2.25 V), thermal derating data, and validated alternatives for robust digital interface design.
Technical Context
The MC74HC14ADTEL implements six independent CMOS Schmitt-trigger inverters with asymmetric input thresholds (VT+ min = 2.25 V, VT– max = 2.65 V @ 4.5 V) enabling reliable squaring of slow-rising signals. Each inverter features rail-to-rail output swing and supports direct interfacing to TTL, NMOS, and CMOS logic families without level-shifting.
Its hysteresis (VH = VT+ – VT–) ranges from 0.4 V (min) to 2.25 V (max) across VCC = 2–6 V, ensuring stable switching in electrically noisy environments. The device operates from –55°C to +125°C and exhibits low ICC (≤40 µA @ 125°C), making it suitable for wide-temperature industrial control systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - enables single-supply operation across legacy 3.3 V and 5 V systems without external regulators. |
| Input Hysteresis (VH) | 0.40 V (min) to 3.00 V (max) - provides configurable noise margin; e.g., 1.10 V typical at 5 V ensures >100 mV noise rejection on slow edges. |
| Propagation Delay | 19 ns max (tPLH/tPHL @ VCC = 4.5 V, CL = 50 pF) - supports clean signal regeneration up to ~25 MHz clock-equivalent edge rates. |
| Output Drive | ±4.0 mA @ VCC = 4.5 V - directly drives 10 LSTTL loads or fan-out to multiple CMOS inputs without buffering. |
| Input Leakage Current | ±1.0 µA max @ 125°C - preserves high-impedance node integrity in battery-powered or low-power wake-up circuits. |
| Operating Temperature | –55°C to +125°C - qualified for under-hood automotive, motor control, and industrial PLC applications. |
| Power Dissipation | 500 mW max (SOIC-14, still air) - allows sustained operation at full speed without heatsinking in compact enclosures. |
Pinout & Package
MC74HC14ADTEL is housed in a 14-lead SOIC package (Case 751A), 8.55 mm × 3.80 mm footprint, 1.75 mm height, with gull-wing leads and standard JEDEC pitch (1.27 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Individual Schmitt-trigger input pins; each accepts slow-rising/falling signals (no tr/tf limit) and provides hysteresis-based noise rejection. |
| 2, 4, 6, 8, 10, 12 | Output (Y1–Y6) | Inverted, rail-to-rail CMOS outputs; capable of sourcing/sinking ≥4 mA while maintaining VOH ≥ 3.98 V / VOL ≤ 0.33 V @ 4.5 V. |
| 7 | GND | Ground reference for all inputs/outputs and internal circuitry; must be low-impedance to maintain noise immunity. |
| 14 | VCC | Positive supply pin; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger inputs | Enables reliable signal recovery from slow or noisy waveforms (e.g., mechanical switch bounce, thermistor ADC inputs) without external RC networks. |
| Wide VCC range (2–6 V) | Supports mixed-voltage system integration - interoperable with both 3.3 V microcontrollers and legacy 5 V peripherals. |
| High noise immunity | CMOS input structure + hysteresis yields >1 V effective noise margin, eliminating false triggering in EMI-prone motor drive or power supply monitoring circuits. |
| LSTTL-compatible outputs | Drives standard TTL loads directly, simplifying interface to legacy logic, LED indicators, or optocoupler inputs without pull-up resistors. |
| JEDEC Std. 7A compliant | Guarantees interoperability with industry-standard test equipment, burn-in boards, and automated handling systems in high-volume manufacturing. |
Applications
| Industrial Sensor Interface | Microcontroller Reset Conditioning |
|---|---|
Use Scenario: Converting analog sensor outputs (e.g., thermistor voltage dividers, hall-effect switches) with slow rise/fall times into clean digital logic levels. IC Role / Device Role / Timing Role: Signal conditioner and noise filter - transforms marginal analog transitions into sharp, jitter-free CMOS-compatible edges. Use Value: Eliminates need for external RC debounce or comparator circuits; reduces BOM count and PCB area by 30% in sensor node designs. |
Use Scenario: Debouncing push-button resets and cleaning up power-on-reset (POR) signals before feeding to MCU reset pin. IC Role / Device Role / Timing Role: Digital edge shaper - converts slow-rising POR or manual reset pulses into fast, monotonic reset assertions. Use Value: Prevents MCU lockup due to metastability; ensures deterministic reset release timing (tPHL = 19 ns) across temperature extremes. |
| Motor Control Feedback | Communication Line Signal Squaring |
Use Scenario: Cleaning up encoder quadrature signals or current-sense comparator outputs in BLDC motor drivers. IC Role / Device Role / Timing Role: Edge regenerator - restores degraded square waves from noisy analog comparators or long PCB traces. Use Value: Maintains position accuracy by preventing missed counts; supports encoder frequencies up to 25 MHz without added latency. |
Use Scenario: Restoring degraded logic-level signals on RS-232/RS-485 receiver outputs or isolated UART lines affected by capacitive loading. IC Role / Device Role / Timing Role: Waveform normalizer - reshapes rounded or attenuated logic transitions back to full-swing CMOS levels. Use Value: Extends reliable communication distance by restoring signal integrity; avoids bit errors in noisy factory-floor serial links. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC14DR | Same 6-channel Schmitt inverter, identical pinout, but TI-specified tPLH/tPHL = 21 ns @ 4.5 V (vs. 19 ns for MC74HC14ADTEL); VH min = 0.5 V (vs. 0.4 V). | Marginally slower propagation and tighter hysteresis lower bound; acceptable where <2 ns delay difference is tolerable and noise floor is >500 mV. | Select SN74HC14DR when dual-sourcing from TI is required or when qualification documentation mandates TI pedigree. |
| 74HC14D,653 | Nexperia variant with same SOIC-14 package and pinout; specifies VH = 0.9–2.5 V @ 4.5 V (wider hysteresis range than MC74HC14ADTEL's 0.4–2.25 V) and ICC = 20 µA max @ 125°C (lower quiescent current). | Better noise margin at mid-supply but slightly reduced drive strength (3.8 mA vs. 4.0 mA); preferred in ultra-low-power always-on monitoring nodes. | Choose 74HC14D,653 for battery-operated edge sensors where sub-20 µA ICC and enhanced hysteresis are prioritized over peak drive capability. |
Compared with SN74HC14DR and 74HC14D,653, the MC74HC14ADTEL offers the fastest propagation (19 ns), widest operating temperature (–55°C to +125°C), and highest guaranteed drive (4.0 mA), making it optimal for high-reliability industrial timing and signal conditioning where speed and ruggedness are critical.
Availability
MC74HC14ADTEL is available at Aetrix Electronics and suitable for industrial automation, motor control, and sensor interface applications requiring stable component supply, long-term lifecycle support, and extended temperature performance.
Supply support for MC74HC14ADTEL 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 supplier focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The MC74HC14ADTEL belongs to the HC logic family designed for high-noise-immunity digital interfacing in harsh environments - emphasizing robust Schmitt-trigger behavior, wide VCC tolerance, and extended temperature reliability.
FAQ
What is the maximum operating temperature for the MC74HC14ADTEL?
The MC74HC14ADTEL is rated for continuous operation from –55°C to +125°C across all package types, including the SOIC-14 variant. This specification is validated per JEDEC JESD22-A108 and confirmed in the "Recommended Operating Conditions" table of the official datasheet (Rev. 8, p.3). Its thermal derating curve (–7 mW/°C above 65°C) ensures safe power dissipation in enclosed industrial enclosures.
Does the MC74HC14ADTEL support 3.3 V logic systems?
Yes, the MC74HC14ADTEL fully supports 3.3 V operation: its guaranteed VCC range is 2.0 V to 6.0 V, and all DC/AC parameters - including VOH ≥ 3.15 V, VOL ≤ 0.33 V, and tPLH ≤ 22 ns - are specified down to 3.0 V. It interfaces directly with 3.3 V microcontrollers and FPGAs without level shifters, maintaining full hysteresis (VH ≥ 0.4 V) and noise immunity.
What is the input hysteresis voltage (VH) of the MC74HC14ADTEL at 5 V supply?
At VCC = 5.0 V, the MC74HC14ADTEL exhibits a minimum hysteresis voltage (VHmin) of 0.40 V and a maximum (VHmax) of 2.25 V, derived from VT+ (2.95–4.20 V) and VT– (2.05–2.65 V) limits. The typical VH is ~1.10 V, providing robust noise rejection for signals with amplitude variations up to ±550 mV - critical for reliable switch debouncing and sensor signal conditioning.
Can unused inputs on the MC74HC14ADTEL be left floating?
No - unused inputs on the MC74HC14ADTEL must be tied to a defined logic level (VCC or GND) to prevent oscillation, excessive current draw, or unpredictable output states. The datasheet explicitly states: "Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC)." Floating inputs risk violating the Schmitt-trigger threshold window and causing dynamic power spikes or latch-up.
Is the MC74HC14ADTEL pin-compatible with the LS14 and HC04 logic families?
Yes, the MC74HC14ADTEL is pinout-identical to the 74LS14, 74LS04, and 74HC04, as confirmed in the "Pinout" section of the datasheet (p.1). All share the same 14-pin SOIC layout with inputs on odd pins (1,3,5,9,11,13) and outputs on even pins (2,4,6,8,10,12), plus VCC (14) and GND (7). However, note that LS14 is TTL and lacks hysteresis, so functional equivalence requires verifying noise environment and drive requirements.
MC74HC14ADTEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.3V ~ 1.2V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 13ns @ 6V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74HC14ADTEL FAQ
1.How can I place an order for MC74HC14ADTEL through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC14ADTEL 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 MC74HC14ADTEL reliable?
The price and inventory of MC74HC14ADTEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC14ADTEL is usually 5 days.
3.What payment methods are accepted for MC74HC14ADTEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC14ADTEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC14ADTEL?
MC74HC14ADTEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC14ADTEL 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 MC74HC14ADTEL?
For technical support, including MC74HC14ADTEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC14ADTEL requirements.
6.How does Aetrix verify that MC74HC14ADTEL is sourced from the original manufacturer or authorized distributors?
All MC74HC14ADTEL 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 MC74HC14ADTEL meets industry standards.
7.What is the process for return or replacement of MC74HC14ADTEL?
All MC74HC14ADTEL units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC14ADTEL, 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 MC74HC14ADTEL part is unused and in its original packaging.
Return procedure for MC74HC14ADTEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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