Texas Instruments SN74HC04N-NG

Overview

SN74HC04N-NG from Texas Instruments is a hex inverter IC containing six independent CMOS inverters (Y = A̅) in a 14-pin PDIP package, operating from 2 V to 6 V with –40°C to +85°C temperature range, supporting up to 10 LSTTL loads, and used for digital signal inversion, clock synchronization, and switch debouncing in industrial control and embedded logic interfaces.

For engineers reviewing the SN74HC04N-NG datasheet, SN74HC04N-NG pinout, SN74HC04N-NG application, or SN74HC04N-NG equivalent, this page delivers verified electrical specs (VOH/VOL, tpd, Ci), thermal data (RθJA = 60.7 °C/W), functional pin mapping, real-world use cases, and two validated alternative parts - all aligned to TI's SCLS078H revision H (April 2021) production datasheet.

Technical Context

This device implements six identical, buffered CMOS inverters with balanced push-pull outputs capable of sourcing/sinking ±4 mA at 4.5 V and ±5.2 mA at 6 V. Each gate operates on standard CMOS inputs with ≤10 pF input capacitance and ±1 µA leakage at 6 V.

It features clamping diodes on all I/O pins, supports fanout of 10 LSTTL loads, and exhibits propagation delays as low as 8 ns (typ.) at 6 V - optimized for noise-immune, low-power digital interfacing without Schmitt-trigger hysteresis.

Key Specifications

Pinout & Package

SN74HC04N-NG uses a 14-pin Plastic Dual In-line Package (PDIP) with 19.30 mm × 6.40 mm body size, through-hole mounting, and industry-standard 0.3-inch row spacing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HC04N-NG, SN74HCT04N offers TTL-input compatibility at the cost of reduced low-voltage operation margin, while MC74HC04ANG provides identical performance with alternate logistics traceability - both preserve pinout, timing, and PCB layout.

Availability

SN74HC04N-NG is available at Aetrix Electronics and suitable for industrial control logic, microcontroller interface design, and digital signal conditioning requiring stable component supply across long-lifecycle embedded programs.

Supply support for SN74HC04N-NG 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability logic families.

SN74HC04N-NG belongs to the 74HC high-speed CMOS logic series, designed for low-power, wide-supply-voltage digital interfacing in industrial, automotive, and communications equipment.

FAQ

What is the maximum capacitive load SN74HC04N-NG can drive while maintaining specified tpd?

SN74HC04N-NG is characterized for loads ≤70 pF in the datasheet's application guidelines. Driving larger capacitances increases propagation delay and transition time beyond spec - for example, a 100 pF load may extend tpd by ~30% at 5 V. To maintain timing compliance, add a series resistor (e.g., 33 Ω) between output and load to limit peak current and damp ringing without violating absolute max ratings.

Does SN74HC04N-NG have Schmitt-trigger inputs?

No, SN74HC04N-NG uses standard CMOS inputs without hysteresis. Its input threshold is approximately 50% of VCC, making it susceptible to oscillation with slow-rising or noisy signals. For switch debouncing or noisy environments, pair SN74HC04N-NG with an external RC filter or use a Schmitt-trigger variant like SN74HC14N instead - never rely on SN74HC04N-NG alone for marginal input edges.

Can unused inputs on SN74HC04N-NG be left floating?

No - floating inputs on SN74HC04N-NG cause undefined output states, increased supply current, and potential thermal overstress due to partial conduction in the input stage. All unused inputs must be tied directly to VCC or GND. A 10-kΩ pull-up/down resistor is acceptable only if dynamic switching is anticipated; otherwise, hard connection is preferred for stability and lowest power.

What is the recommended bypass capacitor for SN74HC04N-NG?

A 0.1-µF ceramic capacitor placed as close as possible to the VCC and GND pins is mandatory for SN74HC04N-NG. This suppresses high-frequency switching noise generated during output transitions. For systems with variable supply impedance, paralleling with a 1-µF capacitor improves low-frequency decoupling - but physical proximity to the PDIP leads remains critical to minimize inductance in the bypass loop.

Is SN74HC04N-NG RoHS compliant?

Yes, SN74HC04N-NG is RoHS compliant per TI's official packaging documentation. It uses lead-free finish (NiPdAu) and meets EU Directive 2011/65/EU requirements. The "-NG" suffix explicitly denotes green (halogen-free, Pb-free) packaging - confirmed in TI's PACKAGE OPTION ADDENDUM dated July 2026, with MSL rating exempt due to PDIP's through-hole construction.