onsemi 74LVX14M

Overview

74LVX14M from onsemi is a low-voltage hex inverter IC with Schmitt-trigger inputs, designed for noise-immune signal conditioning in 3.3 V systems. It features 2.0–3.6 V supply operation, ±25 mA output drive, 1.0 V typical hysteresis, 6.5 V input tolerance, and TSSOP-14 packaging - enabling robust level translation between 5 V and 3.3 V logic domains in industrial control interfaces.

For engineers reviewing the 74LVX14M datasheet, pinout, applications, or equivalent options, key selection criteria include guaranteed hysteresis (1.0 V typ), simultaneous switching noise immunity, input overvoltage tolerance to 6.5 V, and operation across −40°C to +85°C - critical for reliable edge detection in noisy sensor front-ends and mixed-voltage I/O buffering.

Technical Context

The 74LVX14M implements six independent CMOS inverter stages, each incorporating internal transistor-ratio-defined hysteresis (VT+ ≈ 2.2 V, VT− ≈ 0.9 V at VCC = 3.0 V) to reject slow-edge or noisy inputs. Its Schmitt-trigger inputs provide deterministic switching regardless of input slew rate, eliminating metastability in signal conditioning paths.

It supports dual-supply interoperability: inputs accept up to 6.5 V while operating from a 2.0–3.6 V VCC rail, enabling direct interfacing of legacy 5 V sensors or microcontrollers to modern 3.3 V logic without external level shifters. Propagation delay is 6.8–16.3 ns (VCC = 2.7–3.3 V, CL = 15–50 pF), with output-to-output skew ≤1.5 ns.

Key Specifications

Pinout & Package

TSSOP-14 (Case 948G), 4.9 mm × 4.4 mm × 1.2 mm body height, 0.65 mm pitch, Pb-free, moisture-sensitive level 1 (MSL1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV14APW and 74LVC14AD,118, the 74LVX14M delivers superior noise immunity (1.0 V hysteresis) and true 5 V-tolerant inputs - making it the only choice when interfacing unconditioned 5 V sensor outputs to 3.3 V logic without additional protection circuitry.

Availability

74LVX14M is available at Aetrix Electronics and suitable for industrial sensor interface, motor control feedback, and mixed-voltage I/O buffering requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 74LVX14M 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

onsemi (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.

The LVX logic family - including the 74LVX14M - was engineered specifically for low-voltage, high-noise-margin digital interfacing in industrial and embedded systems operating at 3.3 V with legacy 5 V signal compatibility.

FAQ

What is the maximum input voltage rating for the 74LVX14M?

The 74LVX14M supports DC input voltages from −0.5 V to 6.5 V, independent of VCC. This allows direct connection to 5 V logic sources while operating from a 3.3 V supply - a key feature for mixed-voltage system integration. The 6.5 V absolute maximum rating is verified per onsemi's Absolute Maximum Ratings table and applies to all six inputs simultaneously.

Does the 74LVX14M require external pull-up or pull-down resistors on unused inputs?

No - unused inputs on the 74LVX14M must be held HIGH or LOW, but not left floating, as stated in the Recommended Operating Conditions note. Internal design does not include weak pull-ups; external termination is required to prevent undefined logic states and increased ICC. This is a mandatory design rule, not an optional recommendation.

What is the typical hysteresis voltage of the 74LVX14M at 3.0 V supply?

At VCC = 3.0 V, the 74LVX14M exhibits a typical hysteresis (VH) of 1.0 V, calculated as the difference between VT+ (2.2 V) and VT− (0.9 V). This value is process- and temperature-stable due to internal transistor ratio design, and is confirmed in the DC Characteristics table under TA = −40°C to +85°C conditions.

Can the 74LVX14M drive a 50 pF load at 3.3 V with guaranteed timing?

Yes - the 74LVX14M guarantees tPLH/tPHL ≤ 14.1 ns (max) at VCC = 3.3 V ± 0.3 V and CL = 50 pF, per the AC Electrical Characteristics table. This specification covers the full industrial temperature range (−40°C to +85°C), ensuring timing compliance in real-world PCB environments with trace capacitance.

Is the 74LVX14M packaged in a RoHS-compliant and lead-free format?

Yes - the 74LVX14MTCX variant is explicitly marked as Pb-free and halide-free in the datasheet Features section and Ordering Information table. The TSSOP-14 package (Case 948G) carries the "G" suffix or microdot indicator per onsemi's Pb-Free strategy documentation, meeting EU RoHS Directive 2011/65/EU requirements.