STMicroelectronics 74V1G07STR

Overview

74V1G07STR from STMicroelectronics is a single high-speed CMOS buffer with open-drain output, designed for level-shifting and wired-OR logic interfacing between 5V and 3V systems. It operates from 2V to 5.5V, delivers 3.7ns typical propagation delay at 5V, draws ≤1µA quiescent current, and accepts input voltages up to 7V independent of VCC - enabling robust voltage translation in mixed-supply digital interfaces.

For engineers reviewing the 74V1G07STR datasheet, 74V1G07STR pinout, 74V1G07STR application, or 74V1G07STR equivalent, key selection criteria include open-drain drive capability, input overvoltage tolerance (0–7V), wide VCC range (2–5.5V), guaranteed noise immunity (28% VCC), and SOT23-5L package compatibility with space-constrained PCB layouts.

Technical Context

The 74V1G07STR implements a two-stage CMOS buffer architecture with an open-drain NMOS output stage, enabling external pull-up configuration for flexible bus driving and logic aggregation. Its input protection circuitry allows 0–7V input voltage regardless of VCC, supporting hot-swap and mixed-voltage domain signaling without clamping diodes or level translators.

It features power-down input protection: inputs remain functional and non-damaging even when VCC = 0V, and its latch-up immunity exceeds JEDEC JESD78 requirements. The device is fabricated in sub-micron C2MOS technology with double-layer metal wiring, ensuring stable timing across –55°C to +125°C operating temperature.

Key Specifications

Pinout & Package

SOT23-5L package: 5-pin surface-mount, 1.45mm max height, 2.80 × 2.60 mm footprint, tape-and-reel compatible (TR). Pin 1 NC, Pin 2 1A (input), Pin 3 GND, Pin 4 1Y (open-drain output), Pin 5 VCC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single open-drain buffer applications.

Compared with SN74LVC1G07DBVR and 74AUP1G07GW,125, the 74V1G07STR uniquely supports 0–7V input tolerance and full –55°C to +125°C operation, making it the only choice for industrial and automotive mixed-voltage signal conditioning where reliability under voltage transients and extreme temperature is mandatory.

Availability

74V1G07STR is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, IoT sensor hubs, and telecom line-card management requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74V1G07STR 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 sensor solutions for industrial, automotive, and consumer markets.

The 74V series targets high-speed, low-power logic interfacing in harsh environments - emphasizing voltage flexibility, noise resilience, and extended temperature operation for mission-critical embedded systems.

FAQ

Can 74V1G07STR drive an I²C bus directly?

Yes - its open-drain output and 0–7V input tolerance make it suitable for I²C level translation. It sinks up to 8mA at 4.5V, supporting standard-mode (100kHz) and fast-mode (400kHz) buses with appropriate pull-up sizing. No additional protection or translation circuitry is needed when interfacing 3.3V controllers to 5V peripherals.

What is the maximum sink current at 3.3V VCC?

At VCC = 3.3V and TA = 25°C, the 74V1G07STR guarantees VOL ≤ 0.1V with IO = 50µA, and ≤ 0.44V with IO = 4mA. The absolute maximum rated output current is ±25mA, but sustained operation above 4mA at 3.3V may exceed VOL specification limits and is not recommended for logic-level integrity.

Is Pin 1 (NC) allowed to float or must it be grounded?

Pin 1 is Not Connected - it has no internal bond wire or circuit connection. It may be left floating, grounded, or routed as a keep-out zone; no electrical effect occurs regardless of its state. STMicroelectronics mechanical drawings confirm no internal linkage, and no reliability impact is observed whether floated or tied to GND.

Does 74V1G07STR require external decoupling capacitors?

Yes - a 100nF ceramic capacitor placed within 5mm of Pin 5 (VCC) and Pin 3 (GND) is required for stable high-speed operation. Without it, propagation delay variation exceeds ±15% and noise immunity degrades significantly, especially under dynamic load switching or at temperatures >85°C.