Diodes Incorporated 74LVC14AS14-13

Overview

74LVC14AS14-13 from Diodes Incorporated is a hex Schmitt-trigger inverter IC in SO-14 package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs, IOFF-enabled partial power-down protection, and 24mA drive capability at 3.3V - used for noise-immune signal conditioning in mixed-voltage logic interfaces.

For engineers reviewing the 74LVC14AS14-13 datasheet, 74LVC14AS14-13 pinout, 74LVC14AS14-13 application, or 74LVC14AS14-13 equivalent, key selection criteria include Schmitt-trigger hysteresis (0.3V min), propagation delay (2.5–9.5 ns), IOFF leakage (<20 µA), voltage translation support, and SO-14 thermal resistance (θJA TBD).

Technical Context

The 74LVC14AS14-13 implements six independent CMOS inverters with Schmitt-trigger inputs, each providing hysteresis (VT+ − VT− ≥ 0.3 V) to reject input noise in slow-rising or noisy digital signals. Its IOFF circuit disables outputs during power-down, preventing back-current flow when VCC = 0 V.

It supports bidirectional voltage translation between 1.65V and 5.5V domains: inputs accept up to 5.5V regardless of VCC, and outputs swing rail-to-rail (VOH ≥ VCC − 0.2 V, VOL ≤ 0.6 V at 24 mA), enabling interface bridging without external level shifters.

Key Specifications

Pinout & Package

74LVC14AS14-13 is housed in a 14-pin SOIC (SO-14) package with standard 1.27 mm pitch, 8.74 mm × 3.99 mm body, and 1.73 mm max height. Thermal resistance θJA is not specified in datasheet but follows JEDEC MS-012 guidelines.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC14APW and 74AHC14PW,118, the 74LVC14AS14-13 uniquely combines 1.65 V operation, 24 mA drive, and IOFF in an industry-standard SO-14 package - making it optimal for industrial control, embedded power sequencing, and mixed-voltage debouncing where reliability and compatibility are critical.

Availability

74LVC14AS14-13 is available at Aetrix Electronics and suitable for voltage translation, pushbutton debouncing, microcontroller signal conditioning, and power-down isolation requiring stable component supply across automotive, industrial, and computing applications.

Supply support for 74LVC14AS14-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-reliability, energy-efficient components for power management, signal integrity, and protection.

The 74LVC14AS14-13 belongs to Diodes' LVC logic family, designed specifically for low-voltage, mixed-supply digital interfacing with robust noise immunity and power-down safety in industrial and computing systems.

FAQ

Can 74LVC14AS14-13 operate reliably at 1.65 V supply?

Yes. The device is fully characterized from 1.65 V to 5.5 V, with guaranteed propagation delay (≤9.5 ns), output drive (≥8 mA), and Schmitt thresholds (VT+ ≥ 0.9 V, VT− ≤ 1.2 V) across this full range. It meets all AC/DC specifications at 1.65 V per DS35262 Rev. 4–2.

Does 74LVC14AS14-13 support true bidirectional voltage translation?

No. It supports unidirectional translation: high-voltage signals (up to 5.5 V) may be applied to inputs while powered from lower VCC (e.g., 3.3 V), but outputs swing only between GND and VCC. For true bidirectional level shifting, a dedicated translator like TXB0108 is required.

What is the maximum capacitive load the outputs can drive?

Each output is rated for 50 mA continuous current and tested with 30–50 pF loads in switching characterization. With 24 mA drive at 3.3 V and typical Cpd = 8.0 pF/gate, it reliably drives ≤50 pF loads at ≤10 MHz without excessive rise/fall time degradation or overshoot.

Is IOFF active when VCC is disconnected or floating?

IOFF activates only when VCC is at 0 V (grounded). If VCC is floating, the internal power-on reset and bias circuits are undefined, and IOFF behavior is not guaranteed. Always tie VCC to GND or a valid supply during power-down sequences to ensure reliable IOFF activation.