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onsemi 74HCT14DTR2G
- Part No.:
- 74HCT14DTR2G
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCT14DTR2G.pdf
- Description:
- IC INVERTER 6CH 1-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,717
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Product details
Overview
74HCT14DTR2G from onsemi is a hex Schmitt-trigger inverter IC with LSTTL-compatible inputs, operating at 4.5–5.5 V, providing 10 LSTTL load drive capability and 0.4–1.5 V hysteresis voltage for noise immunity. It is used to square slow input edges and interface TTL/NMOS outputs to CMOS systems in industrial control and sensor signal conditioning.
For engineers reviewing the 74HCT14DTR2G datasheet, pinout, applications, or equivalent options, key selection factors include its TSSOP-14 package, guaranteed 40 ns max propagation delay at 125°C, Schmitt-trigger hysteresis for noisy environments, and Pb-free compliance per JEDEC Std. 7A.
Technical Context
This device implements six independent Schmitt-trigger inverters using high-performance silicon-gate CMOS technology. Each channel features asymmetric input thresholds (VTmin = 0.5 V, VTmax = 2.1 V) and hysteresis (VHmin = 0.4 V, VHmax = 1.5 V), enabling reliable switching in presence of slow or noisy signals.
It supports direct interfacing between TTL/NMOS logic families and CMOS loads without level-shifting circuitry. Input leakage is ≤1.0 µA, quiescent ICC is ≤40 µA at 125°C, and output drive meets ±4 mA sink/source under worst-case conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 4.5–5.5 V - Ensures compatibility with standard 5 V TTL/NMOS and CMOS systems. |
| Hysteresis Voltage | 0.4–1.5 V - Provides noise margin against EMI and ground bounce in industrial environments. |
| Propagation Delay | ≤48 ns at 125°C - Guarantees timing integrity in high-temperature embedded control applications. |
| Output Drive | ±4 mA - Sufficient to drive 10 LSTTL loads directly without external buffers. |
| Input Thresholds | VTmin = 0.5 V, VTmax = 2.1 V - Enables clean transition detection on slow-rising sensor or switch inputs. |
| ESD Rating | HBM >2000 V - Supports robust handling during PCB assembly and field service. |
Pinout & Package
TSSOP-14 package (Case 948G), 4.9 × 4.4 × 1.2 mm body, 0.65 mm pitch, Pb-free, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inverter Input (A1–A6) | Accepts TTL/NMOS-compatible logic levels; Schmitt-trigger input ensures noise rejection. |
| 2, 4, 6, 8, 10, 12 | Inverter Output (Y1–Y6) | CMOS-compatible push-pull outputs capable of ±4 mA drive at VCC = 4.5 V. |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance. |
| 14 | VCC | Positive supply rail; decoupling capacitor required within 1 cm for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Schmitt-trigger input hysteresis | 0.4–1.5 V - Eliminates multiple transitions on slow or noisy input edges. |
| LSTTL-compatible inputs | VIH = 2.0 V min, VIL = 0.8 V max - Directly interfaces legacy TTL and NMOS logic without level shifters. |
| CMOS output drive | VOH ≥ 3.7 V @ 4 mA, VOL ≤ 0.4 V @ 4 mA - Ensures reliable fanout to downstream CMOS loads. |
| Wide temperature range | −55°C to +125°C - Validated for automotive under-hood and industrial motor-control environments. |
| Pb-free & RoHS-compliant | JEDEC Std. 7A compliant - Meets global environmental regulations and reflow soldering requirements. |
Applications
| Industrial Sensor Interface | Motor Control Feedback Conditioning |
|---|---|
Use Scenario: Converting analog sensor outputs (e.g., thermistor, potentiometer) with slow rise/fall times into clean digital signals for microcontroller ADC trigger or GPIO sampling. IC Role / Device Role / Timing Role: Signal squaring and noise filtering via Schmitt-trigger inversion before digital acquisition. Use Value: Prevents false edge detection caused by EMI or contact bounce, improving system reliability without software debouncing. |
Use Scenario: Conditioning hall-effect or encoder signals in BLDC motor drives where electrical noise from power stages corrupts position feedback. IC Role / Device Role / Timing Role: Input signal conditioning stage that cleans up jittery quadrature or commutation signals prior to MCU timer capture. Use Value: Enables accurate rotor position tracking at high PWM frequencies by eliminating metastability in feedback paths. |
| Legacy System Level Translation | Power Supply Sequencing Monitor |
Use Scenario: Interfacing 5 V TTL-based PLC I/O modules with modern 5 V CMOS microcontrollers in retrofit industrial automation panels. IC Role / Device Role / Timing Role: Voltage-level translator and signal buffer between mismatched logic families. Use Value: Eliminates need for discrete resistor networks or dedicated level-shifters, reducing BOM count and layout area. |
Use Scenario: Monitoring delayed power-good signals from DC/DC converters in multi-rail systems to ensure safe startup sequencing. IC Role / Device Role / Timing Role: Hysteresis-based threshold detector converting analog ramp signals into clean enable/disable logic pulses. Use Value: Prevents premature activation of downstream rails due to supply droop or overshoot during turn-on transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex Schmitt-trigger inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCT14DR | SOIC-14 package; 125°C max rating same; identical AC/DC specs; slightly higher thermal resistance (125°C/W vs 170°C/W). | Preferred for through-hole prototyping or legacy board designs with SOIC footprints. | Select when board layout uses SOIC-14 land pattern or requires lower thermal impedance in convection-cooled environments. |
| MC74HCT14ADTR2G | Same TSSOP-14 package and marking; identical electrical specs; manufactured by ON Semiconductor (same die, alternate part numbering). | No functional difference; used interchangeably in production where dual sourcing is required. | Choose for supply chain diversification while maintaining identical form, fit, and function. |
Compared with 74HCT14DTR2G, SN74HCT14DR offers better thermal performance in SOIC but larger footprint, while MC74HCT14ADTR2G provides identical TSSOP-14 functionality with alternate ordering code-enabling dual-sourcing without design change.
Availability
74HCT14DTR2G is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback conditioning, and legacy system level translation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HCT14DTR2G 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 manufacturer specializing in energy-efficient power and sensing solutions for automotive, industrial, and cloud infrastructure markets.
The 74HCT14DTR2G belongs to the HCT logic family designed for TTL-to-CMOS interfacing with robust noise immunity, targeting industrial control, factory automation, and legacy system upgrades.
FAQ
What is the maximum operating temperature for the 74HCT14DTR2G?
The 74HCT14DTR2G is rated for continuous operation from −55°C to +125°C across all package types. This full industrial temperature range is validated per JEDEC JESD22-A104 and confirmed in the Recommended Operating Conditions table of the official datasheet. The 74HCT14DTR2G maintains guaranteed propagation delay and output drive performance across this entire range.
Does the 74HCT14DTR2G require external pull-up resistors on unused inputs?
No - unused inputs on the 74HCT14DTR2G must not be left floating. Per datasheet Note 6, each unconnected input must be tied either to VCC or GND to prevent increased ICC and potential oscillation. External pull-up resistors are unnecessary if directly connected to a valid logic rail; the 74HCT14DTR2G does not have internal pull-ups.
Is the 74HCT14DTR2G pin-compatible with the 74HC14?
No - while both are hex Schmitt-trigger inverters, the 74HCT14DTR2G has TTL-compatible input thresholds (VIH = 2.0 V min), whereas the 74HC14 uses CMOS thresholds (VIH ≈ 3.5 V at VCC = 5 V). Swapping them may cause logic misinterpretation. The 74HCT14DTR2G is pin-compatible only with other 74HCT14 variants (e.g., 74HCT14DR, MC74HCT14ADTR2G).
What is the typical power dissipation of the 74HCT14DTR2G at 5 V and 1 MHz?
At VCC = 5.0 V and f = 1 MHz with CL = 50 pF, the dynamic power dissipation of the 74HCT14DTR2G is calculated as PD = CPD × VCC² × f + ICC × VCC. With CPD = 32 pF (per inverter) and ICC = 20 µA typical, total PD ≈ 0.8 mW per inverter or ~4.8 mW for all six channels - well within the 450 mW TSSOP-14 package limit.
Can the 74HCT14DTR2G drive an LED directly?
No - the 74HCT14DTR2G is not designed for direct LED driving. Its output current capability is ±4 mA (sink/source), insufficient for typical indicator LEDs requiring 5–20 mA. Using it to drive an LED risks exceeding VOH/VOL specifications and degrading noise margins. A discrete transistor or dedicated LED driver should be used instead.
74HCT14DTR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74HCT
- 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:
- 4.5V ~ 5.5V
- Current - Quiescent (Max):
- 2 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 @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HCT14DTR2G FAQ
1.How can I place an order for 74HCT14DTR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCT14DTR2G 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 74HCT14DTR2G reliable?
The price and inventory of 74HCT14DTR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT14DTR2G is usually 5 days.
3.What payment methods are accepted for 74HCT14DTR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT14DTR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCT14DTR2G?
74HCT14DTR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCT14DTR2G 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 74HCT14DTR2G?
For technical support, including 74HCT14DTR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT14DTR2G requirements.
6.How does Aetrix verify that 74HCT14DTR2G is sourced from the original manufacturer or authorized distributors?
All 74HCT14DTR2G 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 74HCT14DTR2G meets industry standards.
7.What is the process for return or replacement of 74HCT14DTR2G?
All 74HCT14DTR2G units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT14DTR2G, 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 74HCT14DTR2G part is unused and in its original packaging.
Return procedure for 74HCT14DTR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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