STMicroelectronics 74VHC05MTR

Overview

74VHC05MTR from STMicroelectronics is a high-speed CMOS hex inverter with open-drain outputs, designed for level-shifting and wired-OR logic interfacing between 3V and 5V systems. It features 3.8 ns typical propagation delay at 5V, 2 µA max quiescent current at 25°C, and operates across 2V–5.5V supply range - enabling use in battery-powered I²C bus pull-up, LED sink drivers, and mixed-voltage GPIO translation.

For engineers reviewing the 74VHC05MTR datasheet, 74VHC05MTR pinout, 74VHC05MTR application, or 74VHC05MTR equivalent, key selection criteria include open-drain output drive capability (8 mA sink at 4.5V), input tolerance up to 7V independent of VCC, ESD immunity (2 kV HBM), and guaranteed operation from –55°C to +125°C.

Technical Context

The device implements six independent inverting buffers with open-drain outputs, each capable of sinking up to 8 mA while maintaining VOL ≤ 0.55 V at VCC = 4.5 V and IO = 8 mA. Its three-stage internal buffer architecture enhances noise immunity (VNIH/VNIL ≥ 28% VCC) and suppresses switching noise (VOLP ≤ 0.8 V).

All inputs tolerate 0–7 V regardless of VCC, enabling robust hot-swap and level-translation functionality. Power-down protection prevents back-driving during power-off states, and latch-up immunity exceeds 200 mA per IEC 61000-4-2.

Key Specifications

Pinout & Package

SOP-14 (SOIC-14) package with 1.27 mm pitch, JEDEC MS-012 compliant, tape-and-reel format (MTR suffix). Body dimensions: 8.75 × 3.91 × 1.75 mm (L × W × H).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain hex inverter applications.

Compared with SN74LVC05APWR and 74AHC05PW,118, the 74VHC05MTR uniquely combines 7V input tolerance with industrial temperature range and SOP-14 availability - making it optimal for legacy-compatible, mixed-voltage industrial interfaces where robustness outweighs raw speed.

Availability

74VHC05MTR is available at Aetrix Electronics and suitable for I²C bus translation, LED sink driving, hot-swap interface design, and mixed-voltage GPIO expansion requiring stable component supply across extended temperature ranges.

Supply support for 74VHC05MTR 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, Switzerland, delivering silicon solutions for automotive, industrial, and consumer markets since 1987.

The 74VHC series targets high-speed, low-power CMOS logic replacement for legacy 74-series devices, emphasizing interoperability, wide supply range, and enhanced robustness in harsh environments.

FAQ

Can 74VHC05MTR drive an I²C bus directly?

Yes - its open-drain outputs and 7V-tolerant inputs allow direct connection to I²C SDA/SCL lines. An external pull-up resistor (typically 2.2–10 kΩ to VCC or higher-voltage rail) is required. The device sinks up to 8 mA while maintaining VOL ≤ 0.55 V, satisfying I²C sink-current specifications for standard-mode (100 kHz) and fast-mode (400 kHz) operation.

What is the maximum output sink current at 3.3V supply?

At VCC = 3.3 V and TA = 25°C, the 74VHC05MTR guarantees VOL ≤ 0.44 V with IO = 4 mA (per output), and VOL ≤ 0.55 V up to 8 mA. Derating applies above 85°C ambient; consult Table 6 in the datasheet for worst-case VOL across temperature and voltage.

Does this part require decoupling capacitors?

Yes - a 100 nF ceramic capacitor placed between VCC (pin 14) and GND (pin 7), as close as possible to the package, is mandatory to suppress supply noise and ensure stable high-speed switching. Additional bulk capacitance (e.g., 4.7 µF) is recommended for systems with multiple logic devices sharing the same rail.

Is 74VHC05MTR pin-compatible with older 74HC05 variants?

Yes - it is functionally and pin-compatible with standard 74HC05 and 74LS05 devices in SOP-14 packages. However, unlike 74LS05, it has open-drain (not push-pull) outputs and supports wider VCC range (2–5.5V vs. 4.75–5.25V), requiring verification of pull-up configuration in legacy designs.