Nexperia USA Inc. 74LVT14D,112

Overview

74LVT14D,112 from Nexperia is a 3.3 V hex inverter with Schmitt-trigger inputs, bus-hold circuitry, and IOFF partial power-down capability. It delivers ±20 mA/±32 mA output drive, operates from 2.7 V to 3.6 V, tolerates 5.5 V inputs, and functions across –40 °C to +85 °C - used in noise-prone industrial control signal conditioning and level translation between 3.3 V logic and legacy 5 V buses.

For engineers reviewing the 74LVT14D,112 datasheet, 74LVT14D,112 pinout, 74LVT14D,112 application, or 74LVT14D,112 equivalent, this page provides verified functional role, validated SO14 pin mapping, confirmed Schmitt threshold voltages (VT+ = 1.7 V typ, VT– = 1.1 V typ), IOFF leakage (< ±100 μA), and real-world use cases in bus interface isolation and slow-transition signal cleanup.

Technical Context

The 74LVT14D implements six independent inverting buffers, each with hysteresis (VH = 0.6 V typ) to reject noise on slow-rising/falling signals. Its BiCMOS architecture enables TTL-compatible input thresholds while driving heavy capacitive loads up to 50 pF with tPLH/tPHL ≤ 5.7 ns at 3.3 V.

IOFF circuitry actively disables outputs when VCC = 0 V, blocking backflow current during hot-swap or partial power-down sequences. Bus-hold inputs retain last valid logic state without external pull-ups, reducing BOM count and PCB area in unused-input scenarios.

Key Specifications

Pinout & Package

74LVT14D,112 uses the SO14 (SOT108-1) package: plastic small outline, 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter applications.

Compared with SN74LVC14APWR and 74LVTH14PW,118, the 74LVT14D,112 uniquely combines bus-hold, IOFF, and 5.5 V input tolerance - making it the only choice for industrial hot-swap interfaces requiring zero external components and guaranteed safe power-down behavior.

Availability

74LVT14D,112 is available at Aetrix Electronics and suitable for industrial PLC I/O conditioning, legacy bus level translation, and hot-swappable module control requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for 74LVT14D,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 delivering high-performance logic, analog, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in industrial and consumer applications.

The 74LVT14D,112 belongs to Nexperia's LVT logic family - engineered for robust 3.3 V operation with Schmitt inputs, bus-hold, and IOFF to simplify design-in for noise-prone, multi-rail, and hot-plug-capable systems.

FAQ

Does 74LVT14D,112 support true 5 V logic-level inputs?

Yes - its inputs tolerate up to 5.5 V regardless of VCC, allowing direct connection to 5 V sources without clamping diodes or level shifters. This is confirmed in Table 4 (Limiting Values) and Table 5 (Recommended Operating Conditions) of the Rev. 5 datasheet, where VI(max) = +7.0 V absolute and VI(operating) = 0–5.5 V.

What is the purpose of the bus-hold feature, and how does it affect unused inputs?

The bus-hold circuit actively retains the last valid logic state on each input (1A–6A) without external pull-up/down resistors. As stated in Section 1, this eliminates the need for 12 discrete resistors in typical implementations, reducing BOM cost and PCB area while preventing floating inputs from causing undefined logic states or increased dynamic power consumption.

How does IOFF behave during partial power-down, and what is its leakage specification?

When VCC = 0 V, the IOFF circuitry disables all outputs (1Y–6Y), placing them in high-impedance state and limiting total leakage current to ±100 μA maximum (Table 6, IOFF parameter). This prevents backflow current through powered downstream circuitry - a requirement explicitly cited in Section 1 for partial power-down applications and validated per JESD78 Class II latch-up testing.

Can 74LVT14D,112 replace 74HC14 in existing designs?

No - while both are hex Schmitt inverters, 74LVT14D,112 operates at 2.7–3.6 V with 5.5 V-tolerant inputs and IOFF, whereas 74HC14 requires 2–6 V supply and lacks bus-hold, IOFF, and overvoltage tolerance. Direct substitution would risk input overvoltage damage and fail to meet partial power-down requirements unless board-level redesign addresses these functional gaps.