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Nexperia USA Inc. 74HCT3G14DP,125
- Part No.:
- 74HCT3G14DP,125
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
74HCT3G14DP,125.pdf
- Description:
- IC INVERT SCHMITT 3CH 3IN 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,713
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Product details
Overview
74HCT3G14DP,125 from Nexperia is a triple inverting Schmitt trigger IC with TTL-compatible inputs, 8-pin TSSOP package (SOT505-2), operating from 4.5 V to 5.5 V supply, featuring ±4.0 mA output drive, 21–48 ns propagation delay (VCC = 4.5 V), and hysteresis of 0.40–0.71 V - used for noise-immune signal conditioning in industrial timing circuits.
For engineers reviewing the 74HCT3G14DP,125 datasheet, 74HCT3G14DP,125 pinout, 74HCT3G14DP,125 application, or 74HCT3G14DP,125 equivalent, this device serves as a robust input conditioner in environments with slow-rising signals, EMI-prone sensor interfaces, and relaxation oscillator designs requiring stable threshold switching.
Technical Context
The 74HCT3G14DP,125 implements three independent inverting Schmitt triggers with TTL-level input thresholds (VT+ = 1.20–1.90 V, VT− = 0.50–1.20 V at VCC = 4.5–5.5 V) and 0.40–0.71 V hysteresis, enabling reliable waveform shaping of slowly varying analog-like inputs into clean digital edges.
Its architecture includes input clamp diodes for overvoltage tolerance, supports unlimited input rise/fall times, and delivers rail-to-rail CMOS-compatible outputs with ±4.0 mA drive capability under recommended conditions - all while maintaining operation across −40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5 V to 5.5 V - ensures compatibility with 5 V TTL logic systems and stable operation across industrial temperature range. |
| Input Threshold (VT+) | 1.20–1.90 V at VCC = 4.5–5.5 V - defines minimum voltage for HIGH recognition, enabling noise margin against ground bounce. |
| Hysteresis (VH) | 0.40–0.71 V - prevents multiple toggling on noisy or slow-transitioning inputs by separating turn-on/turn-off points. |
| Propagation Delay | 21–48 ns (VCC = 4.5 V) - determines maximum usable frequency in oscillator or pulse-shaping applications. |
| Output Drive | ±4.0 mA - sufficient to directly drive standard CMOS loads or small capacitive nodes without external buffering. |
| Operating Temperature | −40 °C to +125 °C - qualified for under-hood automotive auxiliary modules and industrial control cabinets. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - withstands handling and board-level electrostatic events without latch-up or parametric shift. |
Pinout & Package
TSSOP8 plastic thin shrink small outline package (SOT505-2), 8 leads, body width 3 mm, lead length 0.5 mm, pin 1 indicator located below marking code in lower-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6 | 1A / 2A / 3A | Independent Schmitt-trigger inputs - each accepts TTL-level signals and provides hysteresis-based inversion. |
| 2, 5, 7 | 3Y / 1Y / 2Y | Corresponding inverted outputs - pin 2 = output of input 3 (3A→3Y), pin 5 = output of input 2 (2A→2Y), pin 7 = output of input 1 (1A→1Y). |
| 4 | GND | Ground reference for all internal circuitry and I/O - must be low-impedance connection to minimize noise coupling. |
| 8 | VCC | Positive supply rail - decoupling capacitor (100 nF ceramic) required within 5 mm for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Enables direct interfacing with legacy 5 V microcontrollers and logic families without level-shifting. |
| Triple independent channels | Allows concurrent signal conditioning of three separate sensors or timing paths on a single compact die. |
| Unlimited input rise/fall times | Eliminates need for external RC filtering or slew-rate limiting before input, simplifying front-end design. |
| Clamp diode protection | Permits use of series current-limiting resistors for inputs exceeding VCC, supporting mixed-voltage system interfacing. |
| High noise immunity | 0.4–0.7 V hysteresis rejects common-mode noise up to ±350 mV on slow-rising edges without false triggering. |
Applications
| Industrial Sensor Interface | Relaxation Oscillator |
|---|---|
|
Use Scenario: Conditioning output from thermistor-based temperature sensors with slow thermal response and EMI pickup in factory-floor PLC modules. IC Role / Device Role / Timing Role: Inverting Schmitt trigger converts noisy, ramping analog voltage into clean square-wave logic signal for microcontroller ADC sampling or interrupt generation. Use Value: Hysteresis eliminates chatter during threshold crossing, ensuring single-edge detection per temperature transition and reducing firmware debounce overhead. |
Use Scenario: Generating precise clock signals in battery-powered IoT node sleep/wake timers where external crystal is cost-prohibitive. IC Role / Device Role / Timing Role: One gate forms feedback loop with resistor-capacitor network to produce stable periodic oscillation; remaining gates buffer or invert output. Use Value: K-factor of 0.4–1.2 (per Fig. 13) enables predictable frequency tuning via R/C selection - no external timing IC required. |
| Astable Multivibrator | Noise-Immune Pushbutton Debounce |
|
Use Scenario: Generating fixed-frequency tone for panel-mounted status indicators in medical diagnostic equipment requiring EMC compliance. IC Role / Device Role / Timing Role: Two gates cross-coupled with RC networks create self-running oscillator; third gate inverts output polarity for differential signaling. Use Value: Propagation delay variation < ±7 ns across temperature ensures consistent frequency stability (±5 % typical) without trimming. |
Use Scenario: Debouncing mechanical pushbuttons in industrial HMI panels exposed to vibration and conducted noise on shared power rails. IC Role / Device Role / Timing Role: Single gate accepts raw switch closure signal; hysteresis prevents multiple transitions during contact bounce (typically 5–15 ms). Use Value: Eliminates need for software debouncing routines or external RC + MCU GPIO, reducing BOM count and firmware complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schmitt trigger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC3G14DCUR | Lower supply range (1.65–5.5 V), CMOS input levels, 3.3 V optimized; 3.5 ns faster tpd at 3.3 V but higher VIH/VIL mismatch with 5 V TTL sources. | Better suited for mixed-voltage 3.3 V/5 V systems with level translation; less tolerant of 5 V-only TTL input swings. | Select when operating below 4.5 V or integrating with LVC-family logic; avoid if interfacing directly with legacy 5 V microcontrollers. |
| MC74VHC14DT | Wider supply range (2.0–5.5 V), CMOS inputs, higher ICC (20 μA vs. 1.0 μA typical), identical TSSOP8 footprint and pinout. | Accepts slower input edges with same hysteresis but draws more quiescent current - critical in always-on battery applications. | Choose for broader VCC flexibility and pin compatibility; prefer 74HCT3G14DP,125 when minimizing standby power in 5 V systems. |
Compared with SN74LVC3G14DCUR and MC74VHC14DT, the 74HCT3G14DP,125 uniquely balances TTL input compatibility, low static current (1.0 μA), and guaranteed 5 V operation - making it optimal for retrofitting legacy 5 V designs without redesigning input interface networks.
Availability
74HCT3G14DP,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, relaxation oscillators, astable multivibrators, and noise-immune pushbutton debounce circuits requiring stable component supply across extended temperature ranges.
Supply support for 74HCT3G14DP,125 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 logic, discrete, and MOSFET solutions with focus on reliability, efficiency, and manufacturability for industrial and consumer applications.
The 74HCT3G14DP,125 belongs to Nexperia's 74HCT logic family, engineered specifically for robust 5 V TTL-compatible interfacing in harsh environments where noise immunity and wide temperature operation are critical.
FAQ
What is the maximum input voltage the 74HCT3G14DP,125 can tolerate beyond VCC?
The device includes input clamp diodes that allow safe operation with input voltages up to VCC + 0.5 V, provided input current is limited to ±20 mA per pin. This enables direct connection to 5.5 V signals in 5 V systems when using a series resistor - confirmed in Table 5 (Limiting Values) and Section 1 General Description.
Can the 74HCT3G14DP,125 operate reliably at 3.3 V supply?
No - the 74HCT3G14DP,125 is specified only for 4.5 V to 5.5 V operation (Table 6). At 3.3 V, input thresholds fall outside TTL compatibility range and output drive degrades significantly; use 74LVC3G14 instead for 3.3 V systems.
How does hysteresis improve performance in pushbutton debounce applications?
Hysteresis creates separate turn-on (VT+) and turn-off (VT−) thresholds - typically 1.20 V and 0.50 V at 4.5 V - so contact bounce between those levels causes no output change. This guarantees one clean edge per button press without software or RC delays, as verified in Table 8 and Fig. 4–5.
Is the 74HCT3G14DP,125 pin-compatible with the 74HC3G14DP variant?
Yes - both share identical TSSOP8 (SOT505-2) package, pinout, and functional diagram. The key difference is input threshold behavior: 74HC3G14DP uses CMOS-level inputs (VIH ≈ 0.7×VCC), while 74HCT3G14DP uses TTL-level inputs (VIH ≈ 2.0 V), making them electrically distinct but mechanically interchangeable.
74HCT3G14DP,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HCT
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 3
- Number of Inputs:
- 3
- Features:
- Schmitt Trigger
- Voltage - Supply:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 4mA, 4mA
- Input Logic Level - Low:
- 0.5V ~ 0.6V
- Input Logic Level - High:
- 1.9V ~ 2.1V
- Max Propagation Delay @ V, Max CL:
- 32ns @ 4.5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
74HCT3G14DP,125 FAQ
1.How can I place an order for 74HCT3G14DP,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT3G14DP,125 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 74HCT3G14DP,125 reliable?
The price and inventory of 74HCT3G14DP,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT3G14DP,125 is usually 5 days.
3.What payment methods are accepted for 74HCT3G14DP,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT3G14DP,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT3G14DP,125?
74HCT3G14DP,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT3G14DP,125 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 74HCT3G14DP,125?
For technical support, including 74HCT3G14DP,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT3G14DP,125 requirements.
6.How does Aetrix verify that 74HCT3G14DP,125 is sourced from the original manufacturer or authorized distributors?
All 74HCT3G14DP,125 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 74HCT3G14DP,125 meets industry standards.
7.What is the process for return or replacement of 74HCT3G14DP,125?
All 74HCT3G14DP,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT3G14DP,125, 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 74HCT3G14DP,125 part is unused and in its original packaging.
Return procedure for 74HCT3G14DP,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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