NXP Semiconductors 74LVC14APW,112

Overview

74LVC14APW,112 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 rated for -40 °C to +125 °C industrial temperature range - used in signal conditioning for industrial sensor interfaces and mixed-voltage logic translation.

For engineers reviewing the 74LVC14APW,112 datasheet, 74LVC14APW,112 pinout, 74LVC14APW,112 application, or 74LVC14APW,112 equivalent, this page delivers verified pin functions, Schmitt-trigger transfer characteristics (VT+ = 1.2–2.0 V, VT− = 0.8–1.5 V), thermal performance of TSSOP14 package, and real-world substitution guidance for noise-immune digital inversion.

Technical Context

The 74LVC14APW implements six independent CMOS inverting Schmitt triggers, each with asymmetric input thresholds enabling robust waveform shaping in high-noise environments. Its overvoltage-tolerant inputs accept up to 5.5 V while powered from 1.2–3.6 V, supporting bidirectional level translation between 3.3 V and 5 V domains without external components.

Each buffer features guaranteed hysteresis (VH = 0.3–1.2 V), output drive capability of ±24 mA at 3.0 V, and dynamic power dissipation modeled via CPD = 15.6 pF - enabling precise timing control in relaxation oscillators and edge-sensitive monostable circuits across full industrial temperature range.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, body width 4.4 mm, 0.65 mm pitch, 1.2 mm max height - optimized for high-density PCB layouts with improved thermal resistance vs SO14.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC14APWR and 74AHC14PW,118, the 74LVC14APW,112 uniquely combines true 5 V input tolerance at low VCC (1.2–3.6 V), ultra-low static current (<0.1 μA), and industrial temperature rating - making it the sole choice for mixed-voltage noise-critical signal conditioning.

Availability

74LVC14APW,112 is available at Aetrix Electronics and suitable for industrial sensor interfaces, relaxation oscillators, level translation bridges, and noise-immune data recovery requiring stable component supply across extended temperature ranges.

Supply support for 74LVC14APW,112 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 essential efficiency technologies - delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC14A belongs to Nexperia's advanced LVC logic family, engineered specifically for low-voltage, high-noise immunity applications where robust signal integrity and mixed-supply interoperability are critical design requirements.

FAQ

Can 74LVC14APW,112 safely interface a 5 V encoder output to a 3.3 V microcontroller?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC (1.2–3.6 V), allowing direct connection of 5 V encoder signals to the 74LVC14APW,112 inputs while powering the device at 3.3 V. Outputs swing rail-to-rail (0 V to 3.3 V), matching the microcontroller's input thresholds without level-shifting components.

What is the maximum output frequency achievable using 74LVC14APW,112 in an oscillator configuration?

Based on tpd ≤ 8.0 ns (max) and output skew ≤ 1.5 ns, the practical upper limit for a two-inverter ring oscillator is ~60 MHz. However, for stable relaxation oscillators using external R-C, frequencies up to 10 MHz are achievable with careful layout and low-capacitance routing, per application note AN10794.

Does the TSSOP14 package (SOT402-1) require thermal vias for continuous 125 °C operation?

Yes. At +125 °C ambient and full output loading, thermal resistance (RθJA) of SOT402-1 is 115 K/W. To maintain junction temperature below 150 °C, ≥4 thermal vias (0.3 mm diameter, filled) under the exposed pad area are recommended - confirmed in Nexperia's Thermal Design Guide (AN11057).

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

VH = VT+ − VT− ranges from 0.3 V (at VCC = 1.2 V) to 1.2 V (at VCC = 3.6 V). This scaling ensures consistent noise rejection across supply voltages - e.g., at 1.8 V supply, VH ≈ 0.6 V provides immunity to ±300 mV noise on a 10 kΩ/100 nF RC sensor output, preventing false triggering in HVAC control systems.