NXP Semiconductors 74LVC3G14GD,125

Overview

74LVC3G14GD,125 from Nexperia is a triple inverting Schmitt trigger IC with 5 V tolerant inputs, designed for signal conditioning in mixed-voltage digital systems. It operates from 1.65 V to 5.5 V, delivers ±24 mA output drive at 3.0 V, features IOFF partial power-down protection, and supports industrial temperature range (–40 °C to +125 °C). It is used in noise-prone environments requiring clean waveform shaping.

For engineers reviewing the 74LVC3G14GD,125 datasheet, 74LVC3G14GD,125 pinout, 74LVC3G14GD,125 application, or 74LVC3G14GD,125 equivalent, key selection criteria include Schmitt trigger hysteresis (0.70–1.90 V), 5 V input tolerance, IOFF-enabled power sequencing, propagation delay down to 0.5 ns at 5.5 V, and XSON8 (SOT996-2) package compatibility.

Technical Context

This device integrates three independent inverting Schmitt triggers, each with asymmetric threshold voltages (VT+ = 1.30–3.80 V, VT− = 0.60–2.50 V at VCC = 3.0–5.5 V) and hysteresis (VH = 0.40–1.90 V), enabling robust noise rejection on slow-rising/falling signals. Its IOFF circuit actively disables outputs during power-down, preventing backflow current when VCC = 0 V.

The logic function is strictly inverting (L→H, H→L), with unlimited input rise/fall time support and CMOS-level static power consumption (ICC ≤ 4 μA). Input clamping and ESD protection (HBM > 2000 V, CDM > 1000 V) ensure reliability in board-level interfacing between 3.3 V and 5 V domains.

Key Specifications

Pinout & Package

XSON8 (SOT996-2) plastic extremely thin small outline package; no leads; 8 terminals; body size 1.0 × 1.45 × 0.5 mm; pin 1 index located at lower-left corner below marking code.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC3G14DCUR, the 74LVC3G14GD,125 saves >40% board area and enables tighter routing in ultra-compact modules; versus 74LVC1G14GW,125, it delivers three independent channels in nearly identical footprint - making it optimal for multi-signal edge conditioning without stacking devices.

Availability

74LVC3G14GD,125 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and portable medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC3G14GD,125 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC series targets low-voltage, mixed-supply digital interfacing - engineered for robustness in noisy environments, seamless voltage translation, and long-term manufacturability in high-mix electronics assembly.

FAQ

Can 74LVC3G14GD,125 be used with a 1.65 V supply and 5 V input signals simultaneously?

Yes. The device is explicitly rated for 5 V tolerant inputs across its full 1.65–5.5 V supply range. When VCC = 1.65 V, inputs may swing from 0 V to 5.5 V without damage or latch-up, and the IOFF feature remains active to prevent back-current if VCC is later removed.

What is the minimum recommended load capacitance for stable oscillation in an astable multivibrator circuit?

For reliable startup and frequency stability in relaxation oscillator configurations, a minimum load capacitance of 100 pF is recommended on any output driving the RC timing network. Lower values (<50 pF) may cause erratic oscillation or failure to start due to insufficient gate charging current at low VCC.

Does the IOFF feature require external pull-up or pull-down resistors on outputs during power-down?

No. The IOFF circuit internally forces all outputs into high-impedance state when VCC = 0 V, eliminating the need for external biasing. However, if outputs connect to active bus lines, external weak pull-ups (≥10 kΩ) are advised to prevent floating nodes from inducing unintended logic states in adjacent devices.

How does hysteresis vary with supply voltage, and what impact does this have on noise rejection?

Hysteresis (VH = VT+ − VT−) increases with VCC: from 0.40 V at 3.0 V to 1.90 V at 5.5 V. This means noise immunity scales linearly with supply - at 3.3 V, it rejects ~0.73 V of differential noise; at 5.0 V, ~1.5 V - allowing consistent margin across operating conditions without recalibration.