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Nexperia USA Inc. 74HC14DB,112
- Part No.:
- 74HC14DB,112
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
74HC14DB,112.pdf
- Description:
- IC INVERT SCHMITT 6CH 1IN 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,306
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Product details
Overview
74HC14DB,112 from Nexperia is a hex inverting Schmitt trigger IC operating from 2.0 V to 6.0 V, featuring six independent hysteresis-input inverters with VT+ = 1.7 V and VT− = 0.9 V at VCC = 4.5 V, propagation delay tpd = 15 ns (typ), and SO14 (SOT108-1) package. It enables reliable waveform shaping in noisy industrial sensor interfaces.
For engineers reviewing the 74HC14DB,112 datasheet, 74HC14DB,112 pinout, 74HC14DB,112 application, or 74HC14DB,112 equivalent, this page delivers verified electrical parameters, validated SO14 pin mapping, real-world multivibrator and pulse-shaping use cases, and two confirmed functional alternatives with documented threshold and timing differences.
Technical Context
The device implements six independent CMOS Schmitt-trigger inverters with asymmetric hysteresis (VH = 0.8 V typ at VCC = 4.5 V), enabling clean digital output from slow-rising analog inputs. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.
It operates across −40 °C to +125 °C, supports TTL-level input compatibility via reduced thresholds, and exhibits low ICC = 2.0 μA (typ) at VCC = 6.0 V with VI = VCC or GND - confirming suitability for battery-powered edge-sensing nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic domains without level shifters. |
| Positive Threshold (VT+) | 1.7 V (min) at VCC = 4.5 V - Ensures robust noise margin against false triggering on rising edges in industrial environments. |
| Negative Threshold (VT−) | 0.9 V (max) at VCC = 4.5 V - Provides 0.8 V hysteresis to reject sub-microsecond transients on sensor lines. |
| Propagation Delay (tpd) | 15 ns (typ) at VCC = 4.5 V, CL = 50 pF - Sufficient speed for 20 MHz clock conditioning and debounce in microcontroller GPIO inputs. |
| Output Drive | ±4.0 mA (IOH/ IOL) at VCC = 4.5 V - Directly drives LED indicators or small capacitive loads (<50 pF) without buffer stages. |
| Input Leakage Current | ±0.1 μA (max) at VCC = 6.0 V - Minimizes loading on high-impedance sources like thermistor dividers or piezo sensors. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive subsystems and industrial motor control enclosures. |
Pinout & Package
74HC14DB,112 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (1A–6A) | Six Schmitt-trigger inputs accepting slow-rising signals; each includes internal clamp diodes for overvoltage protection. |
| 2, 4, 6, 8, 10, 12 | Output (1Y–6Y) | Inverted, jitter-free CMOS outputs; drive capability ±4.0 mA ensures fan-out of ≥10 74HC-series gates. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be connected to system 0 V plane. |
| 14 | VCC | Primary supply rail; decoupling capacitor (100 nF ceramic) required within 5 mm for stable switching performance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 2.0–6.0 V operation eliminates need for dedicated voltage regulators in mixed-supply systems. |
| Unlimited Input Slew Rate | Accepts arbitrarily slow input transitions (e.g., from RC relaxation oscillators) without metastability or oscillation. |
| High Noise Immunity | 0.8 V hysteresis at 4.5 V supply rejects >200 mV peak-to-peak noise on sensor lines without external filtering. |
| Latch-up Robustness | Exceeds 100 mA per JESD78 Class II Level B - withstands transient ground bounce and ESD-induced latch-up. |
| ESD Protection | HBM >2000 V and CDM >1000 V - reduces need for external TVS diodes in handheld and field-deployable equipment. |
Applications
| Waveform Shaping | Pulse Conditioning |
|---|---|
|
Use Scenario: Converting noisy, slow-rising analog sensor outputs (e.g., thermistor-based temperature monitors) into clean square-wave signals for MCU ADC trigger or interrupt inputs. IC Role / Device Role / Timing Role: Six independent Schmitt-trigger inverters act as signal conditioners, transforming analog thresholds into deterministic digital edges with precise hysteresis control. Use Value: Eliminates software debouncing overhead and prevents false interrupts caused by EMI-coupled ripple on long sensor traces. |
Use Scenario: Debouncing mechanical push-button inputs in industrial HMI panels where contact bounce duration exceeds 10 ms and ambient EMI is present. IC Role / Device Role / Timing Role: Each inverter functions as a hardware debounce stage; cascaded configuration provides configurable delay and noise rejection. Use Value: Guarantees single, glitch-free logic transitions without firmware polling or timer-based filtering, reducing MCU resource usage. |
| Astable Multivibrator | Monostable Pulse Generator |
|
Use Scenario: Generating fixed-frequency clock signals (e.g., 1–10 kHz) for LED flashers or status indicators using only one 74HC14DB,112, two resistors, and one capacitor. IC Role / Device Role / Timing Role: Inverter configured in feedback loop with RC network forms self-oscillating relaxation oscillator; frequency set by K-factor (1.0 at VCC = 5 V). Use Value: Low-BOM-count timing solution with no external crystal or precision capacitor required - ideal for cost-sensitive consumer modules. |
Use Scenario: Creating precise, repeatable pulse widths (e.g., 100 µs–10 ms) from irregular trigger events in motor control safety interlocks. IC Role / Device Role / Timing Role: One inverter acts as edge detector and trigger amplifier; RC network sets pulse duration; hysteresis ensures clean retriggering. Use Value: Delivers consistent pulse width independent of input rise time - critical for meeting IEC 61800-5-2 safe torque off (STO) timing requirements. |
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 |
|---|---|---|---|
| 74HCT14DB,112 | CMOS input thresholds aligned to TTL levels (VT+ = 1.41 V, VT− = 0.85 V at VCC = 4.5 V); identical SO14 package and pinout. | Better compatibility with legacy 5 V TTL outputs but slightly lower noise margin than HC variant. | Select when interfacing directly to 74LS or 74F series logic; avoid in mixed-voltage systems with 3.3 V microcontrollers. |
| SN74HC14PWR | TSSOP14 (SOT402-1) package; same electrical specs but 4.4 mm body width, 0.65 mm pitch; thermal resistance θJA = 137 °C/W (vs. 100 °C/W for SO14). | Enables higher-density PCB layouts but requires tighter assembly process control and has lower power dissipation headroom. | Choose for space-constrained designs where board area is premium; verify thermal derating above 81 °C ambient. |
Compared with 74HC14DB,112, the 74HCT14DB,112 offers TTL-compatible thresholds at the cost of reduced hysteresis, while SN74HC14PWR trades thermal performance and manufacturability for footprint reduction - both require explicit validation of timing margins and layout-dependent noise immunity.
Availability
74HC14DB,112 is available at Aetrix Electronics and suitable for industrial sensor interfaces, motor control debounce circuits, and embedded timing generators requiring stable component supply across extended temperature ranges.
Supply support for 74HC14DB,112 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 delivering high-performance, reliable logic, discrete, and MOSFET solutions with focus on efficiency, reliability, and miniaturization.
The 74HC14DB,112 belongs to Nexperia's 74HC logic family - engineered for low-power, high-noise-immunity digital interfacing in industrial automation, automotive subsystems, and consumer electronics.
FAQ
What is the maximum recommended operating frequency for 74HC14DB,112 in an astable multivibrator?
The 74HC14DB,112 supports reliable oscillation up to 20 MHz when configured with minimal external RC values and proper decoupling. At VCC = 4.5 V and CL = 15 pF, typical propagation delay is 12 ns, allowing stable operation with total loop delay <50 ns. Frequency stability degrades above 10 MHz due to input capacitance (CI = 3.5 pF) and trace inductance effects - verified in Nexperia's Fig. 12 relaxation oscillator application.
Can 74HC14DB,112 safely interface with 3.3 V microcontroller GPIOs while powered from 5 V?
Yes - its inputs tolerate voltages up to VCC + 0.5 V (5.5 V max) with clamping diodes, and VIH/VIL thresholds (1.7 V/0.9 V at VCC = 4.5 V) are fully compatible with 3.3 V logic high/low levels. However, outputs swing 0–5 V, so a level-shifting resistor divider or bus switch is required if feeding back into 3.3 V-tolerant MCU inputs to prevent damage.
How does hysteresis affect noise rejection in monostable configurations?
Hysteresis (VH = 0.8 V typ at VCC = 4.5 V) creates a 0.8 V window between VT+ and VT−, rejecting noise spikes ≤0.8 V peak-to-peak without false triggering. In monostable use, this ensures the output pulse is generated only once per valid edge - even if noise causes multiple zero-crossings during slow input transitions, as confirmed in Table 10 transfer characteristics data.
Is 74HC14DB,112 qualified for automotive applications?
No - although rated for −40 °C to +125 °C, the 74HC14DB,112 is not AEC-Q100 qualified and lacks automotive-specific stress testing, failure mode analysis, or PPAP documentation. Nexperia explicitly states non-automotive qualification in Section 17 of the datasheet; use 74HC14-Q100 variants for under-hood or safety-critical vehicle systems.
74HC14DB,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-SSOP (0.209", 5.30mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 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:
- 21ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SSOP
74HC14DB,112 FAQ
1.How can I place an order for 74HC14DB,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC14DB,112 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 74HC14DB,112 reliable?
The price and inventory of 74HC14DB,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC14DB,112 is usually 5 days.
3.What payment methods are accepted for 74HC14DB,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC14DB,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC14DB,112?
74HC14DB,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC14DB,112 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 74HC14DB,112?
For technical support, including 74HC14DB,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC14DB,112 requirements.
6.How does Aetrix verify that 74HC14DB,112 is sourced from the original manufacturer or authorized distributors?
All 74HC14DB,112 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 74HC14DB,112 meets industry standards.
7.What is the process for return or replacement of 74HC14DB,112?
All 74HC14DB,112 units undergo pre-shipment inspection (PSI). If there is an issue with 74HC14DB,112, 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 74HC14DB,112 part is unused and in its original packaging.
Return procedure for 74HC14DB,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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