Diodes Incorporated 74LVC04AS14-13

Overview

74LVC04AS14-13 from Diodes Incorporated is a hex inverter logic IC in SO-14 package, operating from 1.65V to 5.5V supply, with 5.5V-tolerant inputs, IOFF-enabled partial power-down capability, and ±24mA drive strength at 3.3V - used for voltage translation and signal inversion in mixed-voltage digital interfaces.

For engineers reviewing the 74LVC04AS14-13 datasheet, 74LVC04AS14-13 pinout, 74LVC04AS14-13 application, or 74LVC04AS14-13 equivalent, key selection criteria include input/output voltage tolerance, IOFF leakage during power-down, propagation delay across VCC range, and SO-14 thermal performance in space-constrained PCB layouts.

Technical Context

This device implements six independent CMOS inverters with rail-to-rail output swing and symmetrical rise/fall times. Its IOFF circuit actively disables outputs when VCC = 0V, preventing back-current flow into powered subsystems - critical for hot-swap and multi-rail isolation.

Input thresholds scale with VCC (VIH = 0.65×VCC min at 1.65–1.95V; VIH = 0.7×VCC at 4.5–5.5V), enabling reliable interfacing between 1.8V, 3.3V, and 5V logic domains without external level shifters.

Key Specifications

Pinout & Package

74LVC04AS14-13 is housed in a 14-pin SOIC (SO-14) package with standard 1.27 mm pitch, 8.6 mm × 3.9 mm body, and 1.73 mm max height - optimized for reflow soldering and automated assembly on FR-4 PCBs with 2 oz copper.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC04APW and 74AHC04PW,118, the 74LVC04AS14-13 uniquely combines SO-14 manufacturability, VCC-scaled thresholds, and IOFF - making it the only option that satisfies simultaneous requirements for mixed-voltage robustness, thermal reliability, and partial power-down safety.

Availability

74LVC04AS14-13 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, USB-C power delivery controllers, and automotive body control units requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for 74LVC04AS14-13 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 semiconductor company specializing in discrete, analog, and logic devices, with design centers in Asia, Europe, and the US, and manufacturing in certified ISO/TS 16949 and ISO 14001 facilities.

The 74LVC04A belongs to Diodes' LVC logic family - engineered for low-voltage interoperability, mixed-signal compatibility, and robust operation in industrial, computing, and communications equipment.

FAQ

Can 74LVC04AS14-13 operate reliably at 1.65V supply?

Yes - the device is fully characterized down to 1.65V VCC, with guaranteed VIH = 0.65×VCC (≥1.07V) and VOL ≤ 0.45V at IO = 4mA. Propagation delay increases to 7.5ns max at 1.65V, but functionality remains intact for low-speed control applications such as power sequencing or status indication.

What happens to outputs when VCC = 0V and inputs are driven to 5V?

IOFF activates automatically, placing all six outputs in high-impedance state with leakage ≤20μA. This prevents reverse current from 5V inputs flowing into the unpowered VCC rail - protecting upstream drivers and avoiding latch-up in adjacent powered circuits.

Is thermal derating required for continuous operation at 125°C ambient?

Yes - SO-14 θJA is not specified in the datasheet, but typical values exceed 100°C/W. At TA = 125°C and full 24mA drive per output, junction temperature may exceed 150°C. Derate output current to ≤12mA or add copper pour and airflow to maintain TJ ≤150°C.

Does 74LVC04AS14-13 support Schmitt-trigger inputs?

No - it uses standard CMOS input structure with no hysteresis. Input thresholds are VCC-proportional but lack Schmitt characteristics; external RC filtering or dedicated Schmitt buffers (e.g., 74LVC14) are required for noisy signal conditioning.