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onsemi MC74HC14ADTR2
- Part No.:
- MC74HC14ADTR2
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MC74HC14ADTR2.pdf
- Description:
- IC INVERTER 6CH 1-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,123
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Product details
Overview
MC74HC14ADTR2 from onsemi is a hex Schmitt-trigger inverter IC designed for signal conditioning in noisy or slow-rising input environments. It features CMOS-level input thresholds, 2.0–6.0 V operating voltage, 13 ns max propagation delay at 6.0 V, ±25 mA output drive per pin, and AEC-Q100 qualified automotive-grade reliability. It is used to square up degraded waveforms in microcontroller clock clean-up and sensor interface circuits.
For engineers reviewing the MC74HC14ADTR2 datasheet, pinout, applications, or equivalent options, key selection criteria include hysteresis voltage (0.2–3.0 V), input threshold asymmetry (VT+ min = 0.95 V, VT− max = 2.65 V at 6.0 V), TSSOP-14 package compatibility, and automotive qualification status indicated by the −Q suffix.
Technical Context
The MC74HC14ADTR2 implements six independent Schmitt-trigger inverters using high-performance silicon-gate CMOS technology. Each inverter provides hysteresis with VT+ and VT− thresholds that vary predictably with supply voltage - e.g., VT+ min = 0.95 V and VT− max = 2.65 V at VCC = 6.0 V - enabling robust noise rejection in industrial and automotive signal paths.
It operates across −55 °C to +125 °C with rail-to-rail input compatibility (0 to VCC) and supports direct interfacing to CMOS, NMOS, and TTL logic families. Its 10 LSTTL load drive capability and low quiescent current (≤40 µA at 125 °C) make it suitable for low-power edge-detection and waveform shaping without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | Hex Schmitt-trigger inverter - converts slow/noisy inputs into clean digital edges with built-in hysteresis |
| Supply Voltage Range | 2.0 V to 6.0 V - compatible with 3.3 V and 5 V systems; enables mixed-voltage board design |
| Hysteresis Voltage (VH) | 0.20–3.00 V (min–max, VCC = 2.0–6.0 V) - defines noise margin between rising/falling thresholds |
| Propagation Delay (tPLH/tPHL) | 13 ns max at VCC = 6.0 V - ensures timing-critical edge generation in real-time control loops |
| Output Drive | ±25 mA per pin - sufficient to drive multiple LSTTL loads or small capacitive traces directly |
| Input Leakage Current | ±1.0 µA max at 125 °C - minimizes loading on high-impedance sensors or RC timing networks |
| Operating Temperature | −55 °C to +125 °C - validated for under-hood automotive and industrial ambient conditions |
Pinout & Package
TSSOP-14 (Thin Shrink Small Outline Package), case 948G, 4.9 mm × 4.4 mm footprint, 0.65 mm pitch, Pb-free and RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Independent Schmitt-trigger inputs; each accepts 0–VCC logic levels with hysteresis |
| 2, 4, 6, 8, 10, 12 | Output (Y1–Y6) | Inverted outputs with rail-to-rail swing; capable of sourcing/sinking ±25 mA |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance |
| 14 | VCC | Positive supply rail (2.0–6.0 V); requires local 0.1 µF decoupling near pin |
Key Features
| Feature | Design Value |
|---|---|
| CMOS-level input thresholds | Enables seamless integration into 3.3 V/5 V CMOS systems without level-shifting circuitry |
| High noise immunity | Guaranteed hysteresis ≥0.2 V up to 125 °C prevents false triggering in EMI-prone environments |
| AEC-Q100 qualified (−Q variant) | Validated for automotive applications including engine control, body electronics, and ADAS sensor preprocessing |
| Low input current (≤1.0 µA) | Preserves signal integrity when driving from high-impedance sources like thermistors or crystal oscillators |
| Pb-free, Halogen-free, RoHS compliant | Meets global environmental compliance requirements for industrial and automotive production |
Applications
| Motor Control Feedback | Automotive Sensor Interface |
|---|---|
Use Scenario: Conditioning quadrature encoder signals with slow rise times and EMI-induced jitter in BLDC motor drives. IC Role / Device Role / Timing Role: Schmitt-trigger inverter cleans up analog-like encoder edges before feeding to MCU timer capture inputs. Use Value: Eliminates contact bounce and EMI-induced glitches, ensuring accurate RPM and position calculation without firmware debouncing. | Use Scenario: Interfacing resistive temperature sensors (e.g., NTCs) to microcontrollers via RC relaxation oscillators in cabin climate modules. IC Role / Device Role / Timing Role: Converts RC-generated ramp waveforms into stable square waves for frequency-based temperature measurement. Use Value: Enables single-wire, low-cost temperature sensing with <±1 °C accuracy over −40 °C to +85 °C without ADC or op-amps. |
| Industrial Pushbutton Debounce | Power Supply Sequencing Monitor |
Use Scenario: Debouncing mechanical pushbuttons in PLC I/O modules exposed to vibration and electrical noise. IC Role / Device Role / Timing Role: Six independent Schmitt inverters provide hardware-level edge stabilization for six discrete inputs. Use Value: Removes need for software polling or RC+MCU filtering, reducing firmware complexity and improving response latency to <100 µs. | Use Scenario: Monitoring power-good signals from multiple DC-DC converters during cold-start sequencing in telecom power shelves. IC Role / Device Role / Timing Role: Detects valid voltage thresholds on 12 V, 5 V, and 3.3 V rails using hysteresis to reject ripple-induced false trips. Use Value: Ensures reliable power-up order enforcement with no false resets due to transient undershoot on any rail. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HC14PWR | Same logic function and hysteresis specs; SOIC-14 vs TSSOP-14 package; no −Q automotive qualification | Suitable for commercial/industrial boards where AEC-Q100 is not required | Select when PCB layout uses SOIC footprint and automotive qualification is unnecessary |
| MC74HC14ADTG | Identical die and specs; differs only in packaging format (rail vs tape-and-reel) and marking - same TSSOP-14 case 948G | No functional difference; intended for lower-volume prototyping or manual assembly | Choose for evaluation or small-batch builds where reel handling is not needed |
Compared with SN74HC14PWR and MC74HC14ADTG, the MC74HC14ADTR2 offers verified AEC-Q100 qualification and tape-and-reel packaging optimized for automated SMT production - critical for Tier 1 automotive suppliers requiring PPAP documentation and consistent feeder performance.
Availability
MC74HC14ADTR2 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O conditioning, and sensor signal preprocessing requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant traceability.
Supply support for MC74HC14ADTR2 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 specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The MC74HC14ADTR2 belongs to onsemi's high-reliability HC logic family, engineered specifically for noise-immune signal conditioning in harsh environments - emphasizing hysteresis stability, wide temperature operation, and automotive qualification.
FAQ
What is the maximum operating temperature for the MC74HC14ADTR2?
The MC74HC14ADTR2 is rated for operation from −55 °C to +125 °C. This full industrial and automotive temperature range is validated per AEC-Q100 stress testing, making the MC74HC14ADTR2 suitable for under-hood and industrial control applications where thermal extremes are common.
Does the MC74HC14ADTR2 support 3.3 V logic systems?
Yes, the MC74HC14ADTR2 supports 3.3 V operation within its 2.0–6.0 V supply range. At VCC = 3.3 V, typical VT+ is ~1.8 V and VT− is ~1.3 V, providing ~0.5 V hysteresis - sufficient for noise rejection in standard 3.3 V digital systems without level shifters.
Is the MC74HC14ADTR2 pin-compatible with the MC74HCT14ADTR2G?
No - while both are TSSOP-14 hex Schmitt-trigger inverters with identical pinout, the MC74HC14ADTR2 uses CMOS-level input thresholds (VT+ ≈ 0.5×VCC), whereas the MC74HCT14ADTR2G uses TTL-level thresholds (VT+ ≈ 2.0 V fixed). They are functionally interchangeable only if input signal swing matches the respective threshold architecture.
What does the "−Q" suffix mean in MC74HC14ADTR2G−Q*?
The "−Q" suffix indicates AEC-Q100 qualification and PPAP capability. The MC74HC14ADTR2G−Q* variant undergoes additional automotive-specific stress testing, process controls, and traceability protocols - required for use in safety-critical vehicle subsystems such as lighting control or battery management.
Can unused inputs on the MC74HC14ADTR2 be left floating?
No - unused inputs on the MC74HC14ADTR2 must be tied to either VCC or GND. Floating inputs can cause excessive ICC current, erratic output behavior, or increased EMI susceptibility due to the Schmitt-trigger's sensitivity to intermediate voltages. This requirement is explicitly stated in the datasheet's Recommended Operating Conditions note.
MC74HC14ADTR2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HC
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-TSSOP
MC74HC14ADTR2 FAQ
1.How can I place an order for MC74HC14ADTR2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74HC14ADTR2 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 MC74HC14ADTR2 reliable?
The price and inventory of MC74HC14ADTR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC14ADTR2 is usually 5 days.
3.What payment methods are accepted for MC74HC14ADTR2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC14ADTR2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74HC14ADTR2?
MC74HC14ADTR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74HC14ADTR2 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 MC74HC14ADTR2?
For technical support, including MC74HC14ADTR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC14ADTR2 requirements.
6.How does Aetrix verify that MC74HC14ADTR2 is sourced from the original manufacturer or authorized distributors?
All MC74HC14ADTR2 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 MC74HC14ADTR2 meets industry standards.
7.What is the process for return or replacement of MC74HC14ADTR2?
All MC74HC14ADTR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC14ADTR2, 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 MC74HC14ADTR2 part is unused and in its original packaging.
Return procedure for MC74HC14ADTR2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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