STMicroelectronics 74V2G14STR

Overview

74V2G14STR from STMicroelectronics is a triple Schmitt-trigger inverter IC designed for noise-immune signal conditioning in mixed-voltage digital systems. It operates from 2V to 5.5V, delivers 3.0ns typical propagation delay at 5V, supports 8mA symmetrical output drive at 4.5V, and features 0.8V hysteresis at 4.5V - enabling robust level translation between 3V and 5V logic domains in portable battery-powered equipment.

For engineers reviewing the 74V2G14STR datasheet, 74V2G14STR pinout, 74V2G14STR application, or 74V2G14STR equivalent, key selection criteria include input hysteresis voltage (0.3–1.6V), power-down protection on all I/Os, ±25mA absolute max output current, ESD immunity per IEC 61000-4-2, and SOT23-8L package compatibility with space-constrained PCB layouts.

Technical Context

This device implements three independent Schmitt-trigger inverters using sub-micron C2MOS technology, with buffered outputs ensuring high noise immunity and stable switching. Each inverter stage includes hysteresis (VH = 0.3–1.6V depending on VCC) to reject analog noise on slow-rising or noisy digital signals.

It features full power-down protection: inputs accept 0–7V regardless of VCC, and outputs remain high-impedance during power loss. The symmetrical output drive (|IOH| = IOL ≥ 8mA at 4.5V) ensures matched rise/fall times and balanced tPLH/tPHL propagation delays.

Key Specifications

Pinout & Package

SOT23-8L (8-pin small outline transistor package), 1.95mm pitch, 3.0mm × 3.0mm body, 1.45mm height - optimized for high-density portable PCBs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schmitt-trigger inverter applications.

Compared with SN74LVC2G14DBVR and NC7SZ14P5X, the 74V2G14STR uniquely combines triple-channel integration, 0–7V input tolerance, and sub-µA quiescent current - making it optimal for battery-powered systems requiring robust, multi-signal noise suppression without external protection components.

Availability

74V2G14STR is available at Aetrix Electronics and suitable for USB OTG detection, industrial sensor conditioning, portable audio sequencing, and low-power MCU wake-up applications requiring stable component supply across extended temperature ranges (−55°C to +125°C).

Supply support for 74V2G14STR 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 microcontrollers, power management ICs, sensors, and analog/mixed-signal devices for automotive, industrial, and consumer markets.

The 74V series targets high-speed, low-power CMOS logic applications - specifically engineered for voltage-level translation, noise-immune signal routing, and mixed-supply system interfacing in portable and ruggedized electronics.

FAQ

Is the 74V2G14STR pin-compatible with the 74V2G04?

Yes - the pin configuration and function are identical to the 74V2G04, but the 74V2G14STR adds Schmitt-trigger hysteresis on all inputs. This allows direct replacement in existing 74V2G04 footprints when noise immunity or threshold control is required, without layout changes.

Can the 74V2G14STR safely interface a 5V microcontroller GPIO to a 3.3V sensor output?

Yes - its inputs tolerate 0–7V regardless of VCC, and its output swing scales with VCC. With VCC = 3.3V, outputs swing 0–3.3V, safely driving 3.3V logic. With VCC = 5V, outputs swing 0–5V, compatible with 5V inputs - enabling bidirectional level translation without external components.

What is the maximum capacitive load the 74V2G14STR can drive reliably?

The AC specifications are characterized up to 50pF load capacitance, with tPLH/tPHL remaining within 9.0ns (max) at VCC = 3.3V and 10.5ns (max) at VCC = 5.0V. Driving >50pF may increase propagation delay and reduce edge rate, but does not damage the device - verify timing margins in final layout simulation.

Does the 74V2G14STR require external pull-up or pull-down resistors on unused inputs?

No - unused inputs may be left unconnected due to built-in input protection and high-impedance design. However, tying them to VCC or GND is recommended for deterministic behavior in high-noise environments. The device's input leakage current is ≤±1µA, minimizing impact on adjacent signal integrity.