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Nexperia USA Inc. 74AHCT3G14DP,125
- Part No.:
- 74AHCT3G14DP,125
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
74AHCT3G14DP,125.pdf
- Description:
- IC INVERT SCHMITT 3CH 3IN 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,411
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Product details
Overview
74AHCT3G14DP,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 2.0 V positive-going threshold and 0.6 V negative-going threshold at VCC = 5.5 V, and used for noise-immune waveform shaping in industrial sensor interfaces.
For engineers reviewing the 74AHCT3G14DP,125 datasheet, 74AHCT3G14DP,125 pinout, 74AHCT3G14DP,125 application, or 74AHCT3G14DP,125 equivalent, key selection criteria include Schmitt-trigger hysteresis (0.4–1.6 V), propagation delay ≤9.0 ns (CL = 50 pF), overvoltage-tolerant inputs up to 5.5 V, and -40 °C to +125 °C operation.
Technical Context
This device implements three independent inverting Schmitt triggers in a single monolithic CMOS structure, each with asymmetric input thresholds optimized for TTL-level compatibility. Its input stage accepts voltages up to 5.5 V regardless of VCC, enabling level translation between 3.3 V and 5 V domains without external components.
The output stage delivers symmetrical drive capability (±8 mA at VCC = 4.5 V), balanced propagation delays (tPLH ≈ tPHL), and low dynamic power dissipation (CPD = 12 pF per buffer). It supports relaxation oscillator configurations using external RC networks, as validated in Figure 15 of the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - Ensures compatibility with standard 5 V logic systems and tolerance against rail droop. |
| Input Threshold (VT+) | 2.0 V at VCC = 5.5 V - Guarantees reliable recognition of TTL HIGH signals even under worst-case VCC. |
| Input Threshold (VT-) | 0.6 V at VCC = 5.5 V - Provides robust noise margin against ground bounce and EMI-induced glitches. |
| Hysteresis Voltage (VH) | 0.4 V to 1.6 V - Enables clean signal regeneration from slow-rising or noisy inputs like mechanical switches or analog sensors. |
| Propagation Delay | ≤9.0 ns at CL = 50 pF, VCC = 5.0 V - Supports timing-critical edge detection in sub-100 MHz digital subsystems. |
| Output Drive Strength | ±8.0 mA at VOH/VOL - Directly drives multiple 74-series TTL inputs or small capacitive loads without buffering. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive, industrial PLC, and high-reliability embedded control environments. |
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 on lower left corner below marking code "C14".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A | Input of Inverter 1 | Accepts TTL-level signals; overvoltage tolerant to 5.5 V independent of VCC. |
| 2A | Input of Inverter 2 | Electrically isolated input node; enables independent signal conditioning per channel. |
| 3A | Input of Inverter 3 | Supports three-channel debouncing or parallel thresholding without cross-talk. |
| 1Y | Output of Inverter 1 | Inverted, Schmitt-regenerated copy of 1A; drives downstream logic or RC oscillator feedback. |
| 2Y | Output of Inverter 2 | CMOS-compatible output with rail-to-rail swing and ±8 mA sink/source capability. |
| 3Y | Output of Inverter 3 | Enables multi-stage oscillation or cascaded noise filtering in compact PCB layouts. |
| VCC | Positive Supply | Single 4.5–5.5 V rail powers all three inverters; no separate bias required. |
| GND | Ground Reference | Common return path for all inputs, outputs, and internal circuitry; must be low-impedance. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible input levels | Validates 2.0 V VT+ and 0.6 V VT− at 5.5 V supply - eliminates need for external level shifters in mixed-voltage designs. |
| Overvoltage-tolerant inputs | Withstands 5.5 V input regardless of VCC - enables safe interfacing to legacy 5 V buses while powered from 3.3 V rails. |
| Symmetrical output impedance | Matched rise/fall times (tPLH ≈ tPHL) - preserves pulse symmetry in clock recovery and timing-critical wave shaping. |
| High noise immunity | 1.4 V typical hysteresis at VCC = 4.5 V - rejects >1.4 V peak-to-peak noise on sensor or switch inputs. |
| Extended temperature range | -40 °C to +125 °C operation - meets industrial and automotive under-hood thermal requirements without derating. |
Applications
| Industrial Sensor Interface | Pushbutton Debounce Circuit |
|---|---|
|
Use Scenario: Conditioning output from inductive proximity sensors exposed to EMI in factory automation cabinets. IC Role / Device Role / Timing Role: Schmitt-trigger inverter cleans slow-rising, noisy sensor edges into clean CMOS-compatible square waves for microcontroller GPIO capture. Use Value: Eliminates false triggers caused by contact bounce or motor-drive noise, reducing firmware interrupt load and improving system reliability. |
Use Scenario: Debouncing mechanical pushbuttons in human-machine interface panels for HVAC controllers. IC Role / Device Role / Timing Role: Converts erratic mechanical switch transitions into monotonic logic edges via hysteresis-based regeneration. Use Value: Removes need for software debounce timers or RC filters, freeing MCU resources and ensuring deterministic response time. |
| Astable Multivibrator | Waveform Shaper for Analog Sensors |
|
Use Scenario: Generating fixed-frequency clock signals in cost-sensitive consumer electronics without crystal oscillators. IC Role / Device Role / Timing Role: One inverter configured with external R-C network forms relaxation oscillator; remaining two provide buffering/inversion. Use Value: Achieves ~100 kHz oscillation with <5% frequency drift over temperature - sufficient for non-critical timing functions. |
Use Scenario: Converting slowly varying thermistor or potentiometer voltage outputs into digital logic levels. IC Role / Device Role / Timing Role: Acts as comparator with built-in hysteresis to convert analog voltage ramps into clean digital transitions. Use Value: Prevents chattering at threshold crossings due to sensor noise or thermal drift, enabling stable state machine transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple inverting Schmitt trigger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74AHC3G14DP,125 | CMOS-input version; VT+ = 4.4 V at VCC = 4.5 V; wider 2.0–5.5 V supply range | Better suited for 3.3 V systems interfacing to 5 V peripherals; higher input thresholds reduce noise sensitivity in low-VCC designs | Select when operating below 4.5 V or requiring CMOS-level compatibility across mixed-supply domains |
| SN74LV3G14DCUR | Texas Instruments part; 3.3 V only (1.65–5.5 V); 1.7 V VT+, 0.8 V VT− at VCC = 3.3 V; SOT-23-8 package | Smaller footprint but lower drive strength (±4 mA); not rated for 125 °C ambient | Choose for space-constrained 3.3 V-only designs where extended temperature rating is unnecessary |
Compared with 74AHC3G14DP,125 and SN74LV3G14DCUR, the 74AHCT3G14DP,125 uniquely balances TTL-level compatibility, 125 °C operation, and TSSOP8 manufacturability - making it optimal for industrial control modules requiring long-term thermal stability and legacy bus interoperability.
Availability
74AHCT3G14DP,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, pushbutton debounce circuits, astable multivibrators, and waveform shapers requiring stable component supply across extended temperature ranges.
Supply support for 74AHCT3G14DP,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 efficiency, reliability, and miniaturization.
The 74AHCT series targets industrial and automotive applications requiring robust level translation and noise immunity in harsh environments, with design emphasis on wide supply range, overvoltage tolerance, and extended temperature operation.
FAQ
What is the maximum input voltage the 74AHCT3G14DP,125 can tolerate?
The 74AHCT3G14DP,125 supports overvoltage-tolerant inputs up to 5.5 V regardless of VCC level - verified per datasheet Section 9 (Limiting Values) and Section 2 (Features). This allows safe connection to 5 V buses even when powered from 3.3 V, eliminating external clamping diodes in mixed-voltage systems.
Can this device operate reliably at 125 °C ambient temperature?
Yes - the 74AHCT3G14DP,125 is fully specified from -40 °C to +125 °C (Section 4, Ordering Information; Table 6, Recommended Operating Conditions). Its thermal derating curve for TSSOP8 package begins above 96 °C (Section 9), confirming continuous operation at full ratings up to 125 °C ambient.
How does the Schmitt trigger hysteresis improve noise immunity?
Hysteresis creates distinct upper (VT+) and lower (VT-) switching thresholds - 2.0 V and 0.6 V respectively at VCC = 5.5 V (Table 8). This 1.4 V window prevents output oscillation when input signals linger near the threshold due to noise, ensuring single, clean transitions per input edge.
Is the 74AHCT3G14DP,125 pin-compatible with other triple Schmitt inverters in TSSOP8?
Yes - the pinout matches industry-standard triple inverter layout (1A/VCC/3Y/1Y/2A/3A/GND/2Y) confirmed in Section 7.1 (Pinning DP package SOT505-2). It is functionally and physically compatible with 74AHC3G14DP,125 and SN74LVC3G14DCTR, enabling drop-in substitution where voltage thresholds align.
74AHCT3G14DP,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74AHCT
- 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:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.5V ~ 0.6V
- Input Logic Level - High:
- 2V
- Max Propagation Delay @ V, Max CL:
- 8.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
74AHCT3G14DP,125 FAQ
1.How can I place an order for 74AHCT3G14DP,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHCT3G14DP,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 74AHCT3G14DP,125 reliable?
The price and inventory of 74AHCT3G14DP,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT3G14DP,125 is usually 5 days.
3.What payment methods are accepted for 74AHCT3G14DP,125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT3G14DP,125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHCT3G14DP,125?
74AHCT3G14DP,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHCT3G14DP,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 74AHCT3G14DP,125?
For technical support, including 74AHCT3G14DP,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT3G14DP,125 requirements.
6.How does Aetrix verify that 74AHCT3G14DP,125 is sourced from the original manufacturer or authorized distributors?
All 74AHCT3G14DP,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 74AHCT3G14DP,125 meets industry standards.
7.What is the process for return or replacement of 74AHCT3G14DP,125?
All 74AHCT3G14DP,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT3G14DP,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 74AHCT3G14DP,125 part is unused and in its original packaging.
Return procedure for 74AHCT3G14DP,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74AHCT3G14DP,125 Tags
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