Nexperia USA Inc. 74HC14DB,118

Overview

74HC14DB,118 from Nexperia is a hex Schmitt-trigger inverter IC in SO-14 package, featuring 2V–6V supply range, typical propagation delay of 19ns at 4.5V, ±5.2mA output drive, and TTL-compatible inputs. It performs signal conditioning and noise-immune digital inversion in microcontroller reset circuits and sensor interface stages.

For engineers reviewing the 74HC14DB,118 datasheet, 74HC14DB,118 pinout, 74HC14DB,118 application, or 74HC14DB,118 equivalent, key selection criteria include hysteresis voltage (typically 1.1V), input threshold symmetry, rail-to-rail output swing, and SO-14 thermal performance under sustained 5V operation.

Technical Context

This device implements six independent Schmitt-trigger inverters in a single monolithic CMOS IC. Each gate provides hysteresis with V_IT+ ≈ 2.5V and V_IT− ≈ 1.4V at V_CC = 4.5V, enabling robust noise rejection on slow-rising or noisy digital signals.

The SO-14 package supports surface-mount reflow profiles compliant with JEDEC J-STD-020, and the HC logic family ensures compatibility with both 3.3V and 5V systems while maintaining low static current (I_CC ≤ 2µA at 25°C).

Key Specifications

Pinout & Package

74HC14DB,118 is housed in a 14-pin small-outline (SO-14) package with standard JEDEC MO-153 footprint, 1.27mm pitch, and gull-wing leads. Thermal resistance (R_θJA) is 100K/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC14DR and 74HCT14DB,118, the 74HC14DB,118 offers optimal hysteresis and supply flexibility for modern 3.3V/5V hybrid designs, while the HCT variant trades hysteresis depth for TTL-level input compatibility.

Availability

74HC14DB,118 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and IoT sensor node designs requiring stable component supply and long-term manufacturability.

Supply support for 74HC14DB,118 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 focused on essential efficiency, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC logic family targets general-purpose digital interfacing with low power, wide voltage operation, and robust noise immunity - designed for cost-sensitive, high-reliability embedded control applications.

FAQ

What is the minimum supply voltage for reliable Schmitt-trigger operation?

The 74HC14DB,118 guarantees full Schmitt-trigger functionality down to 2.0V. At V_CC = 2.0V, V_IT+ is typically 1.1V and V_IT− is 0.5V, maintaining usable hysteresis. Below 2.0V, input thresholds become undefined and output drive degrades significantly.

Can this IC drive an LED directly?

Yes - each output can sink or source up to 5.2mA at V_CC = 4.5V. With a 330Ω series resistor and red LED (V_F ≈ 1.8V), it delivers ~6.7mA, within safe limits. Avoid continuous DC drive above 4mA per output to maintain junction temperature below 125°C.

Is the SO-14 package RoHS and REACH compliant?

Yes - 74HC14DB,118 is manufactured in compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Lead finish is matte tin, and halogen content meets Nexperia's "Green" specification (Br+Cl < 900 ppm).

How does propagation delay vary with load capacitance?

Propagation delay increases linearly with capacitive load: t_PD ≈ 19ns + (0.025ns/pF × C_L). At C_L = 15pF, delay is ~19.4ns; at C_L = 100pF, it rises to ~21.5ns. Keep trace capacitance below 20pF for timing-critical clock clean-up applications.