Diodes Incorporated 74HC05T14-13

Overview

74HC05T14-13 from Diodes Incorporated is a hex inverter IC with six independent open-drain outputs, designed for level-shifting and wired-AND logic applications in 2.0V–6.0V systems. It delivers 4mA sink capability at 4.5V, features Schmitt-trigger inputs for noise immunity, and operates across –40°C to +125°C. Used in PC peripheral interfaces and optical drive control circuits.

For engineers reviewing the 74HC05T14-13 datasheet, 74HC05T14-13 pinout, 74HC05T14-13 application, or 74HC05T14-13 equivalent, key selection criteria include open-drain output compatibility, input hysteresis, supply voltage flexibility, and TSSOP-14 thermal performance in space-constrained logic interfacing.

Technical Context

This device implements six identical CMOS inverters, each with an unbuffered open-drain output stage-requiring external pull-up resistors for high-level assertion. All inputs incorporate Schmitt-trigger action, providing 0.5V typical hysteresis at 4.5V supply, enabling robust noise rejection in noisy digital environments.

It supports mixed-voltage interfacing: inputs tolerate up to 7.0V (absolute max), while outputs sink up to 25mA continuously and withstand 6.0V on the drain side. Propagation delay is 7ns typical at 6.0V with 50pF load, and power dissipation per gate is 22pF typical at 1MHz.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9mm × 4.4mm body, 0.65mm pitch, 1.2mm max height, lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex inverter with open-drain output applications.

Compared with SN74HC05DR and 74LVC05PW,118, the 74HC05T14-13 uniquely balances compact TSSOP packaging, full 2.0–6.0V operation, and Schmitt-trigger inputs-making it optimal for mixed-voltage embedded control where board space and noise margin are both critical.

Availability

74HC05T14-13 is available at Aetrix Electronics and suitable for PC peripheral interface design, optical drive control modules, set-top box IR subsystems, and industrial sensor bus implementations requiring stable component supply and long-term manufacturability.

Supply support for 74HC05T14-13 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 analog ICs, specializing in high-reliability components for industrial, computing, and consumer electronics.

The 74HC logic family targets general-purpose digital interfacing with enhanced noise immunity and wide supply tolerance-designed specifically for legacy-to-modern system bridging in cost-sensitive, high-volume applications.

FAQ

Can the 74HC05T14-13 drive an LED directly?

Yes-it can sink up to 4mA at 4.5V, sufficient for indicator LEDs with appropriate series resistance. For higher-current LEDs, use an external transistor stage. Do not exceed 25mA per output or 50mA total through VCC/GND pins.

Is a pull-up resistor required on every open-drain output?

Yes-each open-drain output must have a dedicated pull-up resistor to a valid logic HIGH voltage (e.g., 3.3V or 5V). Values between 1kΩ and 10kΩ are typical; lower values improve rise time but increase static power draw.

What happens if an input is left floating?

Floating inputs may cause erratic output behavior and increased power consumption due to intermediate voltage states. Per datasheet recommendation, unused inputs must be tied to VCC or GND-not left unconnected-to ensure deterministic logic levels and minimize ICC.

Does the 74HC05T14-13 support hot-swap or live-insertion?

No-this device lacks hot-swap protection circuitry. Applying VCC before establishing proper GND connection or inserting into a powered backplane risks latch-up or ESD damage. Always power-cycle the board before insertion and follow controlled ramp-up sequences.