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Texas Instruments 74AHC1GU04DCKTG4
- Part No.:
- 74AHC1GU04DCKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Gates and Inverters
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AHC1GU04DCKTG4.pdf
- Description:
- IC INVERTER 1CH 1-INP SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,705
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Product details
Overview
74AHC1GU04DCKTG4 from Texas Instruments is a single unbuffered CMOS inverter gate operating from 2 V to 5.5 V, delivering ±8 mA output drive at 5 V, with propagation delay as low as 3.5 ns (VCC = 5 V, CL = 15 pF), and rated for –40°C to +125°C operation. It serves as a logic-level inverter or linear amplifier in crystal oscillator circuits.
For engineers reviewing the 74AHC1GU04DCKTG4 datasheet, 74AHC1GU04DCKTG4 pinout, 74AHC1GU04DCKTG4 application, or 74AHC1GU04DCKTG4 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options for signal inversion and oscillator design.
Technical Context
The 74AHC1GU04DCKTG4 implements a single-stage CMOS inverter with unbuffered output architecture, enabling direct integration into Pierce-type crystal oscillator topologies. Its input voltage tolerance up to 5.5 V supports down-voltage translation across mixed-supply systems.
It features rail-to-rail output swing, latch-up immunity exceeding 250 mA per JESD17, and ESD robustness per JESD22 (2000-V HBM, 1000-V CDM). Thermal resistance RθJA is 287.6°C/W in its SC-70 (DCK) package, confirming suitability for space-constrained industrial and telecom PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - Enables interoperability across 3.3 V and 5 V logic domains without level shifters. |
| Output Drive | ±8 mA at 5 V - Sufficient to drive multiple CMOS inputs or small capacitive loads directly. |
| tPLH / tPHL | 3.5 ns min (5 V, CL = 15 pF) - Supports high-speed signal inversion in timing-critical paths. |
| Operating Temp | –40°C to +125°C - Qualified for under-hood automotive, industrial control, and base station environments. |
| Input Tolerance | VI up to 5.5 V - Allows 5 V-tolerant inputs even when VCC = 3.3 V or 2.5 V. |
| ESD Rating | 2000-V HBM - Reduces risk of field failure during handling and assembly. |
| ICC (Quiescent) | 10 µA max at 5.5 V - Minimizes static power in battery-backed or always-on subsystems. |
Pinout & Package
74AHC1GU04DCKTG4 is housed in a 5-pin SC-70 (DCK) package measuring 2.00 mm × 1.30 mm, optimized for high-density PCB layouts and automated placement. The package has a maximum height of 0.6 mm and is RoHS-compliant with NIPDAU lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - Must remain unconnected; floating or tied pins may cause parasitic coupling. |
| 2 | A | CMOS input - Accepts 0–5.5 V logic levels; requires external pull-up/down if unused. |
| 3 | GND | Ground reference - Must be connected to system ground plane with low-inductance path. |
| 4 | Y | Inverted output - Unbuffered, rail-to-rail swing; suitable for oscillator feedback or logic inversion. |
| 5 | VCC | Power supply - Requires local 0.1 µF ceramic bypass capacitor placed within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Unbuffered Output | Enables stable oscillation in Pierce crystal configurations without added phase shift from buffering stages. |
| Wide VCC Range | 2 V–5.5 V operation allows reuse across legacy 5 V and modern low-power 2.5 V/3.3 V designs. |
| Overvoltage-Tolerant Inputs | Inputs withstand 5.5 V regardless of VCC - simplifies interface with higher-voltage peripherals. |
| High ESD Robustness | HBM 2000 V, CDM 1000 V - reduces need for external protection in handheld or field-deployed equipment. |
| Latch-Up Immunity | Exceeds 250 mA per JESD17 - ensures reliability under transient overcurrent conditions. |
Applications
| Wireless Baseband Timing | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Generating stable clock signals for ADC sampling and digital baseband processing in LTE/5G remote radio units. IC Role / Device Role / Timing Role: Inverter-based Pierce oscillator providing 1–50 MHz reference clocks with low jitter and minimal BOM count. Use Value: Eliminates need for discrete oscillator ICs or crystal driver buffers, reducing component count and board area by >30%. |
Use Scenario: Level-shifting and signal inversion for analog sensor outputs interfacing with microcontroller GPIOs in factory automation nodes. IC Role / Device Role / Timing Role: Logic-level translator and active inverter ensuring clean digital transitions despite noisy 24 V DC field wiring. Use Value: Tolerates 5.5 V input transients while operating from 3.3 V MCU rail, avoiding dedicated level-shifters. |
| Audio Equipment Clock Recovery | Surveillance Camera Power Sequencing |
Use Scenario: Recovering and regenerating bit-clock signals from SPDIF or I²S streams in professional audio mixers and DACs. IC Role / Device Role / Timing Role: Low-skew inverter used in clock buffer chains to restore edge integrity after long trace runs. Use Value: Propagation delay variation <1 ns across temperature ensures sub-10 ps jitter contribution to recovered clock. |
Use Scenario: Controlling power-up sequencing of image sensor, ISP, and Wi-Fi SoC in IP cameras with strict voltage ramp requirements. IC Role / Device Role / Timing Role: Inverting enable signal to invert reset polarity or delay power-enable edges via RC networks. Use Value: ±8 mA drive capability reliably switches MOSFET gates or optocouplers without external drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverter gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AHC1G04DCKR | Same AHC family, identical SC-70 package, but active production status and NIPDAU/SN lead finish. | Qualified for full-volume production with TI's current MSL-1 reflow profile and extended -40°C to +125°C temp range. | Select SN74AHC1G04DCKR for new designs requiring guaranteed long-term availability and TI's latest process revision. |
| 74LVC1G04DCKRG4 | Lower VCC range (1.65–5.5 V), higher speed (tPD = 2.5 ns @ 3.3 V), but reduced drive (±24 mA) and no 2 V operation. | Better suited for 1.8 V/3.3 V systems where ultra-low delay outweighs 2 V compatibility needs. | Choose 74LVC1G04DCKRG4 only if design operates exclusively above 1.65 V and prioritizes sub-3 ns delay over wide-voltage flexibility. |
Compared with 74AHC1GU04DCKTG4, SN74AHC1G04DCKR offers assured supply continuity and updated packaging compliance, while 74LVC1G04DCKRG4 trades 2 V support for faster switching in modern low-voltage domains - making the original obsolete part unsuitable for new designs without careful lifecycle review.
Availability
74AHC1GU04DCKTG4 is available at Aetrix Electronics and suitable for wireless infrastructure, industrial sensor interfaces, and audio timing circuits requiring stable component supply and documented legacy compatibility.
Supply support for 74AHC1GU04DCKTG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 90 years of innovation in high-reliability components.
The SN74AHC1G series was designed for space-efficient, low-power logic inversion in portable, industrial, and communications equipment - emphasizing wide voltage operation, robust ESD performance, and oscillator-ready unbuffered outputs.
FAQ
What is the function of the NC pin on the 74AHC1GU04DCKTG4?
The NC (No Connection) pin on the 74AHC1GU04DCKTG4 is internally unconnected and must remain unattached on the PCB. Connecting it to any voltage or ground may introduce parasitic capacitance or leakage paths that degrade noise immunity or oscillator stability. TI's datasheet explicitly prohibits routing or terminating this pin.
Can the 74AHC1GU04DCKTG4 be used in a crystal oscillator circuit?
Yes, the 74AHC1GU04DCKTG4 is specifically designed for crystal oscillator applications due to its unbuffered output stage, which minimizes phase shift and enables reliable startup in Pierce configurations. Its internal single-stage inverter provides sufficient open-loop gain across the –40°C to +125°C range, as confirmed in TI's Figure 6 and Section 8.3.
What is the maximum output current rating for the 74AHC1GU04DCKTG4?
The 74AHC1GU04DCKTG4 supports ±25 mA continuous output current per pin and ±50 mA total device current, as specified in Absolute Maximum Ratings. However, for reliable operation within recommended conditions, TI limits usable drive to ±8 mA at 5 V - the value guaranteed for timing and voltage swing specifications in the Electrical Characteristics table.
Is the 74AHC1GU04DCKTG4 pin-compatible with other SC-70 single-gate inverters?
Yes, the 74AHC1GU04DCKTG4 shares identical SC-70 (DCK) pinout (1:NC, 2:A, 3:GND, 4:Y, 5:VCC) with SN74AHC1G04DCKR and 74LVC1G04DCKRG4. Mechanical compatibility is confirmed by TI's package drawings DBV0005A and DCK outline specs, though electrical differences require schematic validation before substitution.
Why is the 74AHC1GU04DCKTG4 marked as Obsolete in TI's orderable addendum?
The 74AHC1GU04DCKTG4 is listed as Obsolete in TI's official documentation because TI discontinued manufacturing and sales support for this specific variant. Its replacement, SN74AHC1G04DCKR, maintains identical functionality and SC-70 packaging but features updated material content, MSL compliance, and active production status - making it the recommended drop-in option for new designs.
74AHC1GU04DCKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AHC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 1
- Number of Inputs:
- 1
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 1 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.3V ~ 1.1V
- Input Logic Level - High:
- 1.7V ~ 4.4V
- Max Propagation Delay @ V, Max CL:
- 7ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
74AHC1GU04DCKTG4 FAQ
1.How can I place an order for 74AHC1GU04DCKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AHC1GU04DCKTG4 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 74AHC1GU04DCKTG4 reliable?
The price and inventory of 74AHC1GU04DCKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC1GU04DCKTG4 is usually 5 days.
3.What payment methods are accepted for 74AHC1GU04DCKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC1GU04DCKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AHC1GU04DCKTG4?
74AHC1GU04DCKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AHC1GU04DCKTG4 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 74AHC1GU04DCKTG4?
For technical support, including 74AHC1GU04DCKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC1GU04DCKTG4 requirements.
6.How does Aetrix verify that 74AHC1GU04DCKTG4 is sourced from the original manufacturer or authorized distributors?
All 74AHC1GU04DCKTG4 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 74AHC1GU04DCKTG4 meets industry standards.
7.What is the process for return or replacement of 74AHC1GU04DCKTG4?
All 74AHC1GU04DCKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC1GU04DCKTG4, 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 74AHC1GU04DCKTG4 part is unused and in its original packaging.
Return procedure for 74AHC1GU04DCKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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