Diodes Incorporated 74HC14T14-13

Overview

74HC14T14-13 from Diodes Incorporated is a hex inverter IC with Schmitt-trigger inputs, designed for noise-immune signal conditioning and waveform shaping in digital logic systems. It operates across 2.0V–6.0V supply, delivers ±4mA output drive at 4.5V, features hysteresis of 0.4–1.4V (depending on V_CC), and supports propagation delays as low as 12ns at 6.0V - used in clock buffering, debouncing push-button interfaces, and TTL-to-CMOS level translation.

For engineers reviewing the 74HC14T14-13 datasheet, 74HC14T14-13 pinout, 74HC14T14-13 application, or 74HC14T14-13 equivalent, key selection criteria include input hysteresis width, output drive capability at target V_CC, propagation delay vs. temperature, ESD robustness (2kV HBM), and TSSOP-14 thermal and layout compatibility.

Technical Context

The 74HC14T14-13 implements six independent CMOS inverters, each with asymmetric Schmitt-trigger thresholds (e.g., VT+ = 3.15V / VT− = 2.0V at V_CC = 4.5V), enabling reliable noise rejection on slow or noisy input edges. Its push-pull outputs drive capacitive loads up to 50pF with controlled transition times (7–22ns typical).

It conforms to standard 74HC logic family voltage levels and timing, interoperates with 74HCT and 74AHC families under shared supply conditions, and requires no external components for basic operation - unused inputs must be tied to V_CC or GND per recommended operating conditions.

Key Specifications

Pinout & Package

TSSOP-14 package: 4.9mm × 4.4mm body, 0.65mm pitch, exposed pad not present, moisture sensitivity level (MSL) 1 - compatible with standard reflow profiles and fine-pitch PCB assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC14DR and 74HC14D,118, the 74HC14T14-13 offers identical core functionality in a space-saving TSSOP-14 package with proven industrial reliability - optimal for cost-sensitive, high-volume consumer and industrial control designs where board area and manufacturability are prioritized.

Availability

74HC14T14-13 is available at Aetrix Electronics and suitable for push-button debouncing, waveform shaping, and noise-immune signal routing requiring stable component supply across industrial automation, consumer electronics, and embedded control programs.

Supply support for 74HC14T14-13 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, energy-efficient components for industrial, computing, and consumer markets.

The 74HC14T14-13 belongs to Diodes' broad 74HC logic family - engineered for robust performance in mixed-voltage digital systems where noise immunity, low power, and pin-compatible scalability are essential.

FAQ

Can 74HC14T14-13 operate reliably at 2.0V supply?

Yes - the device is fully specified down to 2.0V V_CC, with guaranteed hysteresis (0.2–1.0V), propagation delay (≤190ns), and output drive (≥±2mA). At this voltage, it interfaces cleanly with ultra-low-power MCUs and battery-operated sensors while maintaining noise rejection.

What is the maximum capacitive load this device can drive?

The 74HC14T14-13 is characterized up to 50pF load capacitance in datasheet switching tests. Driving >50pF increases propagation delay and transition time linearly; for >100pF loads, consider adding a series resistor or using a dedicated buffer stage to maintain edge integrity.

Is thermal pad connection required for TSSOP-14 package?

No - the 74HC14T14-13 in TSSOP-14 has no exposed thermal pad. Its power dissipation (≤500mW total) is managed via PCB copper area under the leads; standard 1oz FR-4 with 2–4mm² thermal relief around pins suffices for continuous operation at 125°C ambient.

How should unused inputs be terminated?

Unused inputs must be tied to either V_CC or GND - floating inputs cause increased ICC, erratic output behavior, and potential latch-up. A 10kΩ pull-up or pull-down resistor is acceptable; direct connection is preferred for lowest power and noise immunity.