Diodes Incorporated 74LVCE1G02SE-7

Overview

74LVCE1G02SE-7 from Diodes Incorporated is a single 2-input positive NOR gate in SOT353 package, operating from 1.4V to 5.5V supply, with 5.5V-tolerant inputs, ±24mA output drive at 3.3V, and IOFF-enabled partial power-down protection. It serves as a level-shifting logic gate in mixed-voltage digital interfaces.

For engineers reviewing the 74LVCE1G02SE-7 datasheet, 74LVCE1G02SE-7 pinout, 74LVCE1G02SE-7 application, or 74LVCE1G02SE-7 equivalent, key selection criteria include supply voltage flexibility (1.4–5.5V), 5.5V input tolerance, IOFF functionality for hot-swap safety, propagation delay down to 0.6ns at 3.3V/15pF, and SOT353 footprint compatibility.

Technical Context

This CMOS NOR gate implements the Boolean function Y = A + B (positive-logic NOR) with totem-pole output stage. Its IOFF circuit actively disables outputs during power-down, preventing back-current flow when VCC = 0V while inputs remain biased at up to 5.5V.

Characterized across 1.5V–5.5V, it delivers 30% faster switching than standard LVC at 1.8V and supports direct TTL-level interfacing. Input thresholds scale with VCC (e.g., VIH = 0.65×VCC at 1.4–1.95V), enabling robust operation across voltage domains.

Key Specifications

Pinout & Package

SOT353 (SC-70-5) package: 5-pin surface-mount, 1.25mm × 2.1mm footprint, 0.65mm pitch, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single 2-input NOR gate applications.

Compared with SN74LVC1G02DBVR and 74AUP1G02GW,125, the 74LVCE1G02SE-7 uniquely combines 1.4V start-up, 5.5V input tolerance, and IOFF - making it the only choice for robust mixed-voltage sequencing where power rails may be independently cycled.

Availability

74LVCE1G02SE-7 is available at Aetrix Electronics and suitable for USB peripheral interface design, industrial sensor hub logic, portable display backlight control, and automotive infotainment power sequencing requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVCE1G02SE-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance, high-reliability components for power management, signal integrity, and logic applications.

The 74LVCE logic family targets mixed-voltage digital systems requiring robust level shifting, low-voltage operation, and power-aware features like IOFF - specifically designed for portable, industrial, and automotive control logic.

FAQ

Can the 74LVCE1G02SE-7 operate reliably at 1.4V supply?

Yes. The device is fully characterized from 1.4V to 5.5V, with guaranteed propagation delay (≤7.2ns at 1.5V/15pF) and output drive (≥3mA at 1.4V). Input thresholds scale with VCC, ensuring correct logic interpretation even at minimum supply.

What happens to the output when VCC = 0V and inputs are held at 5V?

The IOFF circuit automatically disables the output stage, limiting leakage current to ±10μA maximum. This prevents damaging reverse current flow from live inputs into the unpowered device - a critical feature for hot-plug and partial-power-down systems.

Is the SOT353 package of the 74LVCE1G02SE-7 compatible with standard SC-70 reflow profiles?

Yes. The SOT353 package uses standard lead-free (Pb-free) termination and meets IPC/JEDEC J-STD-020D moisture sensitivity level 1 (MSL1). Recommended peak reflow temperature is 260°C, consistent with industry-standard Pb-free assembly processes.

How does the 74LVCE1G02SE-7 differ from the 74LVCE1G02W5-7 (SOT25) variant?

Both share identical electrical specifications and logic function. The sole difference is package: SOT353 (74LVCE1G02SE-7) has smaller footprint (1.25×2.1mm) and higher thermal resistance (θJA = 371°C/W), while SOT25 (74LVCE1G02W5-7) offers larger pad area and better thermal performance (θJA = 204°C/W) - select based on board space and thermal constraints.