STMicroelectronics 74V1GU04CTR

Overview

74V1GU04CTR from STMicroelectronics is a single-stage unbuffered CMOS inverter optimized for high-speed logic and analog oscillator applications, featuring 3.5ns typical propagation delay at 5V, 2V–5.5V operating voltage range, ±8mA symmetrical output drive, input tolerance up to 7V independent of VCC, and power-down protection. It is commonly used in crystal oscillator buffer stages and level-shifting interfaces between 3V and 5V systems.

For engineers reviewing the 74V1GU04CTR datasheet, 74V1GU04CTR pinout, 74V1GU04CTR application, or 74V1GU04CTR equivalent, key selection criteria include unbuffered inverter topology, rail-to-rail input tolerance, symmetrical output impedance, latch-up immunity, and SOT323-5L package compatibility with space-constrained PCB layouts.

Technical Context

This device implements a single-stage inverter without internal buffering, enabling direct integration into Pierce oscillator configurations where phase inversion and minimal propagation skew are critical. Its input structure accepts 0–7V regardless of VCC, supporting hot-swap and mixed-voltage interface scenarios.

The output stage delivers matched |IOH| = IOL ≥ 8mA at 4.5V with balanced tPLH ≅ tPHL, ensuring minimal duty-cycle distortion in clock generation. Built on sub-micron C2MOS technology, it achieves 1µA max ICC at 25°C while maintaining -55°C to +125°C operational range.

Key Specifications

Pinout & Package

SOT323-5L package: 1.6mm × 1.6mm × 0.9mm body, 0.65mm pitch, 5-terminal surface-mount outline with exposed pad not present. Pin 1 marked by notch or bevel.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single unbuffered inverter applications.

Compared with SN74LVC1G04DBVR and NC7SZ04P5X, the 74V1GU04CTR uniquely combines unbuffered topology, 7V input tolerance, and power-down protection - making it irreplaceable in crystal oscillator and live-insertion applications where phase integrity and input robustness are non-negotiable.

Availability

74V1GU04CTR is available at Aetrix Electronics and suitable for crystal oscillator design, 3V/5V level translation, and hot-swap signal conditioning requiring stable component supply across automotive, industrial, and communications end markets.

Supply support for 74V1GU04CTR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, MCU, power, and MEMS products for industrial, automotive, and consumer applications.

The 74V series targets high-speed, low-power logic functions with enhanced robustness for mixed-signal and timing-critical systems - specifically engineered for oscillator buffering, level translation, and noise-immune digital interfacing.

FAQ

Can the 74V1GU04CTR be used with a 1.8V supply?

No. The recommended operating VCC range is 2V to 5.5V per datasheet Section 2. Absolute minimum VCC is 2V; operation below this violates guaranteed functionality and may result in undefined output states or increased propagation delay variability. For 1.8V systems, consider the 74LVC1G04 or similar 1.65V–5.5V logic families.

Is Pin 1 (NC) required to be left floating, or can it be tied to GND?

Pin 1 is internally unconnected and must remain floating - tying it to GND or any other node introduces parasitic capacitance and potential coupling paths that degrade oscillator phase noise and increase susceptibility to crosstalk. STMicroelectronics explicitly specifies "Not Connected" with no provision for external biasing.

Does the 74V1GU04CTR support true analog operation in oscillator circuits?

Yes. Its unbuffered single-stage CMOS topology operates in the linear region when biased via external feedback resistors, enabling reliable Pierce oscillator startup and sustained oscillation with standard AT-cut crystals. This behavior is documented in ST's AN2867 and verified in production oscillator designs across automotive and telecom applications.

What is the maximum capacitive load the 74V1GU04CTR can drive while maintaining specified tPD?

The AC Electrical Characteristics table specifies tPD values at CL = 15pF and CL = 50pF. At 5V supply, tPD remains within 3.5–5.5ns (typ–max) up to 50pF. Beyond 50pF, propagation delay increases nonlinearly and output rise/fall times degrade - ST does not characterize performance above 50pF, and oscillator loop stability may be compromised.