Diodes Incorporated 74LVC1G14SE-7

Overview

74LVC1G14SE-7 from Diodes Incorporated is a single-channel Schmitt-trigger inverter IC in SOT353 package, operating from 1.65V to 5.5V supply, featuring 5.5V-tolerant inputs, ±24mA output drive at 3.3V, IOFF partial-power-down protection, and hysteresis of 0.32–1.00V (at VCC = 3V). It enables robust signal conditioning in mixed-voltage logic interfaces.

For engineers reviewing the 74LVC1G14SE-7 datasheet, 74LVC1G14SE-7 pinout, 74LVC1G14SE-7 application, or 74LVC1G14SE-7 equivalent, key selection criteria include input threshold hysteresis (VT+ = 1.50–2.00V, VT− = 0.80–1.30V at 3V), propagation delay ≤4.6ns (CL = 15pF, VCC = 3.3V), IOFF leakage <±10µA, and SOT353 thermal resistance θJA = 371°C/W.

Technical Context

This device implements a positive Boolean inverter function (Y = A̅) with Schmitt-trigger input thresholds enabling noise immunity in slow-rising or noisy digital signals. Its IOFF circuit actively disables outputs during power-down to prevent backflow current, supporting hot-swap and partial-power-down system architectures.

The input hysteresis (ΔVT = VT+ − VT−) ranges from 0.32V to 1.00V depending on VCC, ensuring reliable switching across 1.65–5.5V operation. Input tolerance up to 5.5V allows interfacing with higher-voltage logic families while powered from lower supplies-e.g., 3.3V or 1.8V rails-without level-shifting components.

Key Specifications

Pinout & Package

SOT353 (2.0mm × 2.0mm × 1.1mm, 0.65mm lead pitch) is a 5-pin, surface-mount, leaded plastic package with exposed pad not present; pin 1 marked by notch or bevel.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G14DBVR and 74AUP1G14GW,125, the 74LVC1G14SE-7 uniquely balances compact SOT353 size, 5.5V input tolerance, and ±24mA drive-making it optimal for space-constrained, mixed-voltage embedded control where thermal headroom is moderate and interface robustness is critical.

Availability

74LVC1G14SE-7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, USB-C power delivery sequencing, and IoT node wake-up signal conditioning requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for 74LVC1G14SE-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 semiconductor company specializing in discrete, analog, and logic solutions, with design centers in Asia, Europe, and the U.S., serving industrial, computing, and consumer markets.

The 74LVC logic family targets high-speed, low-voltage, mixed-signal applications-designed for interoperability across voltage domains while maintaining robust noise immunity and power efficiency.

FAQ

Can the 74LVC1G14SE-7 operate reliably at 1.65V supply?

Yes. The device is fully specified down to 1.65V: input thresholds (VT+ = 0.70–1.20V, VT− = 0.30–0.72V), output drive (≥±4mA), and propagation delay (≤9.9ns) all meet datasheet limits at this minimum VCC. It remains functional even at 1.5V for data retention only.

What is the purpose of the NC pin (Pin 4) in the SOT353 package?

Pin 4 is internally unconnected and must not be bonded or routed. Diodes Incorporated specifies it as "No Connect" in the pin description table and package drawings. Leaving it floating is acceptable; grounding it is permissible only if confirmed by layout guidelines-but never connecting to VCC or signal nets.

Does the IOFF feature require external biasing or control signals?

No. IOFF activates automatically when VCC is near 0V-no enable pin or external circuitry is needed. The internal circuitry detects VCC collapse and disables the output stage to block reverse current flow, protecting downstream devices during power sequencing or brownout conditions.

How does the SOT353 package compare thermally to SOT25 for this device?

SOT353 has θJA = 371°C/W versus SOT25's 204°C/W under identical test conditions (FR-4, 2oz copper). At 10mW dissipation, junction temperature rise is ~3.7°C in SOT353 vs ~2.0°C in SOT25. Thermal derating is required above ambient +85°C in SOT353 unless board-level heatsinking is added.