NXP Semiconductors 74ALVC14D,112

Overview

74ALVC14D,112 from Nexperia is a hex inverting Schmitt trigger IC operating from 1.65 V to 3.6 V supply, featuring IOFF partial power-down protection, ±24 mA output drive at 3.0 V, and Schmitt-trigger hysteresis (0.3 V to 1.2 V) for noise-immune signal conditioning in digital interface circuits.

For engineers reviewing the 74ALVC14D,112 datasheet, 74ALVC14D,112 pinout, 74ALVC14D,112 application, or 74ALVC14D,112 equivalent, this device is selected for robust level translation, waveform shaping in noisy environments, and bus isolation during system sleep states - with verified SO14 package compatibility, -40 °C to +125 °C operation, and JEDEC-compliant ESD ratings.

Technical Context

This device implements six independent CMOS inverters, each with Schmitt-trigger inputs providing hysteresis (VT+ = 0.7–2.0 V, VT− = 0.3–1.7 V depending on VCC) to reject input noise up to 0.3–1.2 V. The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current and enabling live insertion in hot-swap systems.

It supports mixed-voltage interfacing: inputs tolerate up to 3.6 V regardless of VCC, enabling direct connection to 3.3 V or 5 V TTL logic while powered from 1.8 V or 2.5 V rails. Propagation delay ranges from 1.0 ns (min) to 5.1 ns (max) across 1.65–3.6 V supply and -40 °C to +125 °C ambient.

Key Specifications

Pinout & Package

74ALVC14D,112 is supplied in SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV14APWR and 74LVC14AD,118, the 74ALVC14D,112 uniquely combines full -40 °C to +125 °C qualification, guaranteed IOFF behavior, and tighter hysteresis control - making it the only option for thermally demanding, hot-pluggable, or safety-critical signal conditioning.

Availability

74ALVC14D,112 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller input conditioning, relaxation oscillator generation, and bus isolation in multi-rail systems requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74ALVC14D,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 leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and energy efficiency.

The ALVC logic family targets low-voltage, high-speed digital interface applications requiring robust noise immunity, wide supply flexibility, and power-aware design - especially in industrial automation and automotive subsystems.

FAQ

Does 74ALVC14D,112 support true bidirectional level translation?

No - it is a unidirectional inverter. For bidirectional I²C or UART level shifting, two inverters per signal line must be used in series with pull-up resistors, leveraging its overvoltage-tolerant inputs and IOFF to prevent contention during power transitions. This configuration is validated in Nexperia application note AN10412.

What is the minimum recommended load capacitance for stable Schmitt-trigger operation?

The device functions correctly with no external load (CL = 0 pF), but propagation delay increases by ≤0.5 ns when driving >50 pF. For relaxation oscillator use (Fig. 9), CL ≥ 10 pF is required to ensure reliable oscillation; values below 5 pF may cause erratic startup or frequency drift due to parasitic coupling.

Can 74ALVC14D,112 be operated at 1.5 V supply?

No - the absolute minimum VCC is 1.65 V per Table 5. Operation below 1.65 V risks undefined output states, increased ICC, and failure to meet VIH/VIL thresholds. At 1.65 V, VOH is guaranteed ≥1.25 V and VOL ≤0.3 V with 6 mA load, satisfying 1.8 V logic families.

Is the exposed pad on DHVQFN package (74ALVC14BQ) electrically connected?

No - the thermal pad (terminal 7/8 in SOT762-1) has no electrical function. Per datasheet section 5.1, it may remain floating or be soldered to GND for thermal improvement, but must not be connected to any voltage rail other than ground to avoid short-circuit risk.