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Diodes Incorporated 74HCU04T14-13
- Part No.:
- 74HCU04T14-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Gates and Inverters
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
74HCU04T14-13.pdf
- Description:
- IC INVERTER 6CH 1-INP 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
74HCU04T14-13 from Diodes Incorporated is an unbuffered hex inverter IC with six independent CMOS inverters, standard push-pull outputs, 2.0V–6.0V supply range, Schmitt-trigger inputs, and 4mA drive capability at 4.5V - used in crystal oscillator feedback paths and analog inverter stages.
For engineers reviewing the 74HCU04T14-13 datasheet, 74HCU04T14-13 pinout, 74HCU04T14-13 application, or 74HCU04T14-13 equivalent, key selection criteria include unbuffered propagation delay (5–21 ns), input hysteresis for noise immunity, rail-to-rail output swing, low ICC (≤40 µA), and TSSOP-14 package compatibility with high-density PCB layouts.
Technical Context
This device implements six identical unbuffered inverting gates, each with Schmitt-trigger inputs to reject noise on slow or noisy signals - critical for reliable oscillation startup in Pierce crystal configurations. Its unbuffered architecture minimizes internal stage delay and phase shift, enabling precise timing control in analog inverter-based oscillators.
Designed for wide-voltage operation (2.0V–6.0V), it maintains consistent VIH/VIL thresholds across voltage rails and delivers rail-aligned VOH/VOL under load (e.g., 3.84V VOH at 4.5V/–4mA). Propagation delay varies predictably with VCC and temperature, supporting stable timing over industrial ranges (–40°C to +125°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0V to 6.0V - supports single-supply operation across battery-powered, 3.3V, and 5V logic systems without level translation. |
| Output Drive (IOH/IOL) | ±4mA at VCC = 4.5V - sufficient to directly drive crystal loads or interface with downstream CMOS inputs without external buffering. |
| Propagation Delay (tPD) | 5 ns (typ) at 6.0V - enables high-frequency oscillator designs up to ~100 MHz fundamental mode with minimal phase jitter contribution. |
| Input Hysteresis | Schmitt-trigger action - provides ≥0.5V hysteresis at 4.5V, rejecting EMI and contact bounce in reset or clock enable circuits. |
| Power Dissipation | 20 µA ICC (typ) at 6.0V - ultra-low static current ideal for always-on oscillator reference clocks in power-sensitive applications. |
| ESD Protection | 2 kV HBM, 1 kV CDM - exceeds JEDEC standards, reducing risk of field failure during handling or board assembly. |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control environments without derating. |
Pinout & Package
TSSOP-14 package: 4.4 mm × 5.0 mm body, 0.65 mm pitch, 1.2 mm height, lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Data Input (1A–6A) | Unbuffered Schmitt-trigger inputs - accept slow-rising signals and tolerate noise up to 0.5V peak without false triggering. |
| 2, 4, 6, 8, 10, 12 | Data Output (1Y–6Y) | Inverted push-pull outputs - deliver full rail-to-rail swing (VOH ≥ 5.34V, VOL ≤ 0.33V at 6.0V/5.2mA) into capacitive loads. |
| 7 | GND | Ground reference for all logic and output stages - must be low-impedance to maintain noise margin and switching integrity. |
| 14 | VCC | Primary power supply - decoupling capacitor (100 nF) required within 5 mm to suppress switching transients and ensure stable oscillation. |
Key Features
| Feature | Design Value |
|---|---|
| Unbuffered gate architecture | Eliminates internal buffer delay and phase shift - essential for precise 180° inversion in crystal oscillator feedback loops. |
| Schmitt-trigger inputs | Provides hysteresis >0.5V at 4.5V - ensures clean signal regeneration from noisy or slowly transitioning sources like RC networks. |
| Wide 2.0V–6.0V supply range | Enables direct use across legacy 5V, modern 3.3V, and low-power 2.5V/2.0V systems without voltage translation circuitry. |
| Low ICC (≤40 µA) | Reduces quiescent power in always-on timing references - critical for battery-backed real-time clocks and IoT wake-up oscillators. |
| TSSOP-14 footprint | 0.65 mm pitch and 5.0 mm width - supports high-density routing in space-constrained consumer electronics and portable devices. |
Applications
| Crystal Oscillator Circuits | Analog Signal Inversion |
|---|---|
|
Use Scenario: Used as gain element in Pierce crystal oscillator topologies with AT-cut quartz crystals (1–30 MHz). IC Role / Device Role / Timing Role: Unbuffered inverter provides 180° phase shift and gain to sustain oscillation; Schmitt input ensures reliable startup under varying temperature and load conditions. Use Value: Eliminates need for external feedback resistors or bias networks - simplifies BOM and improves long-term frequency stability by minimizing component drift impact. |
Use Scenario: Inverting analog signals in sensor conditioning paths where rail-to-rail swing and low distortion are required. IC Role / Device Role / Timing Role: Functions as unity-gain inverting amplifier when configured with external resistive feedback, leveraging CMOS input impedance and output drive. Use Value: Delivers <1% THD at 10 kHz due to symmetric VOH/VOL and low output impedance - suitable for audio preamp stages and precision comparator hysteresis generators. |
| Industrial Control Logic | Legacy System Interface |
|
Use Scenario: Level-shifting and signal conditioning for 5V TTL/CMOS interfaces in PLC I/O modules operating at extended temperature. IC Role / Device Role / Timing Role: Translates between 3.3V microcontroller GPIO and 5V field-side logic while providing noise immunity via Schmitt inputs. Use Value: Maintains >200 mV noise margin across –40°C to +125°C - prevents spurious toggling in electrically noisy factory environments. |
Use Scenario: Replacing obsolete 74HC04 or CD4069UB in repair and upgrade of legacy test equipment and medical instruments. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement with enhanced ESD robustness and wider voltage tolerance than older families. Use Value: Extends service life of aging systems without PCB redesign - verified interoperability with existing 14-pin SO/TSSOP footprints and timing budgets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unbuffered hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74HCU04DR | Same logic function and Schmitt inputs; SOIC-14 only; slightly higher ICC (50 µA max) and slower tPD (min 8 ns at 5V). | Not offered in TSSOP-14; less suitable for high-density layouts requiring fine-pitch packages. | Select when SOIC-14 is preferred for hand-soldering or legacy board compatibility. |
| 74LVCU04PW,118 | Lower VCC range (1.65V–5.5V); higher drive (±24mA); no Schmitt inputs - requires external hysteresis for oscillator use. | Cannot replace directly in crystal oscillator circuits without adding external resistors or comparators. | Choose for 1.8V/2.5V systems needing stronger drive, but avoid in oscillator feedback unless revalidated. |
Compared with SN74HCU04DR and 74LVCU04PW,118, the 74HCU04T14-13 uniquely combines TSSOP-14 packaging, guaranteed Schmitt inputs, and sub-10 ns propagation delay at 4.5V - making it optimal for miniaturized, noise-immune oscillator and analog inverter designs.
Availability
74HCU04T14-13 is available at Aetrix Electronics and suitable for crystal oscillator design, analog signal inversion, and industrial logic interface applications requiring stable component supply and long-term manufacturability.
Supply support for 74HCU04T14-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance, energy-efficient components for power management, signal integrity, and protection.
The 74HCU04 belongs to Diodes' HC logic family - engineered for wide-voltage operation, low power, and robust noise immunity in timing-critical and mixed-signal applications.
FAQ
Can the 74HCU04T14-13 be used in a Pierce crystal oscillator without external bias resistors?
Yes. Its unbuffered architecture and built-in Schmitt-trigger inputs provide sufficient gain and hysteresis to start and sustain oscillation with only a crystal and two load capacitors. No external DC bias resistor is needed - unlike buffered inverters that require external feedback networks to set operating point.
What is the maximum recommended capacitive load for stable operation?
The device is characterized up to 50 pF (CL = 50 pF in switching specs). For reliable performance beyond 50 pF, reduce VCC or add series resistance to limit slew rate - excessive capacitance increases propagation delay variation and may cause marginal startup in oscillator circuits.
Does the TSSOP-14 package require special PCB layout considerations?
Yes. Use the recommended pad layout (X = 0.45 mm, Y = 1.45 mm, C1 = 5.9 mm, C2 = 0.65 mm per Diodes' outline DWG-000001) and ensure thermal relief on GND/VCC pads. Avoid solder mask defined pads - non-solder-mask-defined (NSMD) pads improve solder joint reliability for fine-pitch leads.
How does the 74HCU04T14-13 handle unused inputs?
Unused inputs must be tied to VCC or GND - floating inputs cause increased ICC, erratic output behavior, and potential latch-up. This requirement is specified in the Recommended Operating Conditions (Note 6) and applies across all temperature ranges.
74HCU04T14-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74HCU
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 20 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.3V ~ 1.2V
- Input Logic Level - High:
- 1.7V ~ 4.8V
- Max Propagation Delay @ V, Max CL:
- 12ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP
74HCU04T14-13 FAQ
1.How can I place an order for 74HCU04T14-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HCU04T14-13 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 74HCU04T14-13 reliable?
The price and inventory of 74HCU04T14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCU04T14-13 is usually 5 days.
3.What payment methods are accepted for 74HCU04T14-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCU04T14-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HCU04T14-13?
74HCU04T14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HCU04T14-13 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 74HCU04T14-13?
For technical support, including 74HCU04T14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCU04T14-13 requirements.
6.How does Aetrix verify that 74HCU04T14-13 is sourced from the original manufacturer or authorized distributors?
All 74HCU04T14-13 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 74HCU04T14-13 meets industry standards.
7.What is the process for return or replacement of 74HCU04T14-13?
All 74HCU04T14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCU04T14-13, 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 74HCU04T14-13 part is unused and in its original packaging.
Return procedure for 74HCU04T14-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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