STMicroelectronics 74V1G32STR

Overview

74V1G32STR from STMicroelectronics is a single 2-input OR gate in SOT23-5L package, operating from 2V to 5.5V, with 3.8ns typical propagation delay at 5V, ±8mA symmetrical output drive, and input tolerance up to 7V independent of VCC-enabling robust 5V-to-3V level translation in mixed-voltage logic interfaces.

For engineers reviewing the 74V1G32STR datasheet, 74V1G32STR pinout, 74V1G32STR application, or 74V1G32STR equivalent, key selection criteria include propagation delay symmetry (tPLH ≅ tPHL), power-down input protection, high noise immunity (28% VCC), and rail-to-rail input voltage acceptance beyond VCC.

Technical Context

This device implements a CMOS-based 2-input OR function using sub-micron C2MOS technology with two-stage buffered output. Its input structure accepts voltages from −0.5V to +7.0V regardless of VCC, enabling safe hot-swap and mixed-supply interfacing.

The output stage delivers symmetrical sourcing/sinking capability (≥8mA at 4.5V) and balanced propagation delays, while internal design ensures latch-up immunity and stable operation across −55°C to +125°C.

Key Specifications

Pinout & Package

SOT23-5L surface-mount package (3.0 × 1.75 × 1.3 mm), 5-pin, moisture sensitivity level MSL3, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single 2-input OR gate applications.

Compared with SN74LVC1G32DBVR and NC7SZ32P5X, the 74V1G32STR uniquely supports 7V-tolerant inputs and −55°C operation-making it the only choice for industrial and automotive applications requiring direct high-voltage signal aggregation without external components.

Availability

74V1G32STR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, portable medical device power sequencing, and industrial sensor hub signal conditioning requiring stable component supply across extended temperature and mixed-voltage conditions.

Supply support for 74V1G32STR 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 silicon solutions for automotive, industrial, and consumer markets.

The 74V series targets high-speed, low-power, mixed-voltage logic applications-specifically engineered for robust interoperability between legacy 5V and modern low-voltage systems in harsh environments.

FAQ

Can 74V1G32STR be used with a 12V input signal?

Yes - its inputs tolerate −0.5V to +7.0V independent of VCC, so a 12V signal must be attenuated or clamped externally. Direct 12V application exceeds absolute maximum rating and risks permanent damage. For 12V switch interfacing, use a resistor divider or Zener clamp to limit input to ≤7V.

Is 74V1G32STR pin-compatible with other SOT23-5 logic gates?

No - while physically compatible with SOT23-5 footprint, pin assignments differ across logic families. 74V1G32STR uses Pin 1=1A, Pin 2=1B, Pin 3=GND, Pin 4=1Y, Pin 5=VCC. Substituting without verifying pin mapping may cause incorrect logic behavior or damage due to VCC/GND misalignment.

What is the significance of "power-down protection on inputs"?

This means inputs remain high-impedance and non-destructive even when VCC = 0V. The internal circuitry prevents reverse current flow and avoids parasitic turn-on, allowing safe connection to live signals before power-up - critical for hot-pluggable modules and backplane interfaces.

Does 74V1G32STR support 1.8V logic levels?

No - its minimum recommended VCC is 2.0V, and VIH/VIL thresholds scale with VCC (e.g., VIH = 0.7VCC). At 1.8V supply, VIH would be 1.26V, below standard 1.8V logic high threshold (typically ≥1.35V), risking unreliable switching. Use only at VCC ≥ 2.0V per datasheet specifications.