Nexperia USA Inc. 74LVC14ADB,118

Overview

74LVC14ADB,118 from Nexperia is a hex inverting Schmitt trigger IC with 5 V tolerant inputs, operating from 1.2 V to 3.6 V supply, delivering hysteresis-based noise immunity (VH = 0.3–1.2 V), propagation delay as low as 1.0 ns at 3.3 V, and ±24 mA output drive-used for waveform shaping and oscillator circuits in mixed-voltage industrial control and sensor interface systems.

For engineers reviewing the 74LVC14ADB,118 datasheet, 74LVC14ADB,118 pinout, 74LVC14ADB,118 application, or 74LVC14ADB,118 equivalent, key selection considerations include input hysteresis voltage (VT+ / VT−), 5 V tolerance under 3.3 V VCC, SO14 package thermal derating (10.1 mW/K above 100 °C), and Schmitt-trigger stability in high-noise environments.

Technical Context

This device implements six independent CMOS inverting Schmitt triggers with asymmetric threshold switching (VT+ = 0.4–2.0 V, VT− = 0.12–1.5 V depending on VCC), enabling reliable signal conditioning of slow or noisy digital inputs. Each buffer provides rail-to-rail output swing and supports direct interfacing with both 3.3 V LVC logic and legacy 5 V TTL levels.

It operates across −40 °C to +125 °C, complies with JEDEC JESD8-C/JESD36 for 2.7–3.6 V operation, and features ESD protection exceeding 2000 V HBM and 1000 V CDM-making it suitable for robust industrial PCBs where input transients and supply variation are common.

Key Specifications

Pinout & Package

74LVC14ADB,118 is packaged in SO14 (SOT108-1): plastic small outline, 14-lead, 3.9 mm body width, 1.27 mm lead pitch, with standard JEDEC MS-012 footprint and thermal pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV14APWR and 74AHC14PW,118, the 74LVC14ADB,118 uniquely balances 5 V input tolerance at low VCC, ultra-low static current (<10 μA), and guaranteed hysteresis across full temperature range-making it optimal for energy-sensitive, noise-prone, mixed-voltage edge-node applications.

Availability

74LVC14ADB,118 is available at Aetrix Electronics and suitable for industrial control panels, sensor signal conditioning modules, and mixed-voltage IoT gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC14ADB,118 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 headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability logic, analog, and discrete components for industrial, automotive, and consumer markets.

The 74LVC14A belongs to Nexperia's LVC (Low-Voltage CMOS) logic family, designed specifically for robust, low-power signal conditioning and voltage translation in space- and energy-constrained embedded systems.

FAQ

Can 74LVC14ADB,118 safely interface a 5 V encoder output to a 3.3 V microcontroller GPIO?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC (1.2–3.6 V), so a 5 V encoder signal can connect directly to any 1A–6A pin while VCC = 3.3 V. No series resistor or clamping diode is required. Output swings rail-to-rail (0 V / 3.3 V), matching MCU input thresholds.

What is the minimum recommended decoupling capacitance for stable operation?

A 100 nF X7R ceramic capacitor placed within 5 mm of pin 14 (VCC) and pin 7 (GND) is mandatory. For systems with high-frequency switching or multiple buffers active simultaneously, add a 1 μF bulk capacitor nearby. Layout must minimize loop inductance to suppress supply bounce during output transitions.

Does the SO14 package (SOT108-1) require thermal pad soldering?

No. The SO14 package has no thermal pad. Pin 7 (GND) serves as the primary thermal and electrical reference. Ensure GND traces are wide and connected to a solid internal ground plane. Thermal derating begins at 100 °C (−10.1 mW/K), so ambient must stay ≤95 °C for full 500 mW Ptot.

How does hysteresis vary with supply voltage, and why does it matter?

VT+ rises from 0.2 V (at VCC = 1.2 V) to 2.0 V (at VCC = 3.6 V); VT− follows similarly. This maintains consistent noise margin (VH = VT+ − VT− ≈ 0.3–1.2 V) across VCC. Stable hysteresis ensures reliable switching in battery-powered devices where VCC sags during peak load.