onsemi NLV74HCU04ADG

Overview

NLV74HCU04ADG from onsemi is a hex unbuffered inverter IC in SOIC-14 package, operating across 2.0–6.0 V supply, delivering 10 LSTTL load drive capability, <1 µA input leakage, and propagation delays as low as 12 ns at 6.0 V - used for oscillator circuits, pulse shaping, and high-impedance amplification in industrial control and sensor interface systems.

For engineers reviewing the NLV74HCU04ADG datasheet, pinout, applications, or equivalent options, key selection criteria include its CMOS-compatible inputs, rail-to-rail output swing, −55 °C to +125 °C automotive-grade temperature range, and direct compatibility with LS04 and MC14069UB footprints.

Technical Context

The NLV74HCU04ADG implements six independent single-stage CMOS inverters with high-input impedance (>1 MΩ) and symmetrical push-pull outputs. Each inverter supports full rail-to-rail switching and operates without internal feedback resistors, enabling use in crystal oscillator, Schmitt-trigger, and multi-stage amplifier configurations.

It complies with JEDEC Std 7.0A, features AEC-Q100 qualification (Grade 1), and maintains stable operation under fast edge rates (no input rise/fall time limit). Its logic function is strictly Y = A̅, with no hysteresis unless externally configured via feedback components.

Key Specifications

Pinout & Package

Package: SOIC-14 (Case 751A), body dimensions 8.75 mm × 3.90 mm × 1.75 mm, Pb-free, RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NLV74HCU04ADG, MC74HC04ADG lacks automotive qualification and drive strength, limiting use in harsh environments; SN74HCU04DR matches all critical specs and qualifies as a second-source option without layout or firmware changes.

Availability

NLV74HCU04ADG is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and sensor signal conditioning systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for NLV74HCU04ADG 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

onsemi is a global semiconductor supplier focused on energy-efficient innovation, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon solutions.

The NLV74HCU04ADG belongs to onsemi's high-reliability HC logic family, designed specifically for robust digital interfacing and timing generation in automotive and extended-temperature industrial applications.

FAQ

What is the maximum operating frequency achievable with NLV74HCU04ADG in a crystal oscillator circuit?

The NLV74HCU04ADG supports crystal oscillator operation up to 10 MHz with standard AT-cut fundamental-mode crystals. Its 12 ns propagation delay at 6.0 V and low input capacitance (10 pF) enable stable oscillation in Pierce configurations; actual frequency depends on crystal load capacitance and external R/C values per Figures 5–6 in the datasheet. For NLV74HCU04ADG, oscillator stability is guaranteed from −55 °C to +125 °C.

Does NLV74HCU04ADG require external pull-up resistors when interfacing with LSTTL outputs?

Yes - NLV74HCU04ADG inputs are CMOS-compatible and have high impedance, so they require external pull-up resistors (typically 1–10 kΩ to VCC) when driven by LSTTL outputs to ensure valid high-level input voltage (VIH ≥ 2.0 V at VCC = 5 V). Without pull-ups, LSTTL's weak high-state drive may fall below NLV74HCU04ADG's VIH threshold, causing logic errors. The NLV74HCU04ADG itself does not integrate pull-ups.

Can NLV74HCU04ADG drive an LED directly without a current-limiting transistor?

Yes - each NLV74HCU04ADG output can sink up to 25 mA continuously, sufficient to drive standard 5 mm LEDs (e.g., 20 mA @ 2.0 V forward voltage) using a series current-limiting resistor. For example, with VCC = 5 V and LED VF = 2.0 V, a 150 Ω resistor sets ~20 mA sink current. Ensure total package power dissipation remains within 1077 mW (SOIC-14) and junction temperature stays ≤150 °C. NLV74HCU04ADG's rail-to-rail output swing ensures full LED on/off control.

Is NLV74HCU04ADG pin-compatible with legacy LS04 TTL devices?

Yes - NLV74HCU04ADG has identical pinout and logic function to the 74LS04, including input/output assignments on pins 1–12 and VCC/GND on 14/7. However, it is not electrically pin-compatible without design review: LS04 draws higher supply current and has different input thresholds. NLV74HCU04ADG may replace LS04 in existing layouts if pull-ups are added for LSTTL interfacing and supply decoupling meets CMOS requirements. The NLV74HCU04ADG datasheet explicitly confirms this mechanical compatibility.

What is the minimum supply voltage for NLV74HCU04ADG to operate as an oscillator?

The NLV74HCU04ADG is specified for oscillator configurations at 2.5 V to 6.0 V - lower than its general logic operating range (2.0–6.0 V). Below 2.5 V, gain margin degrades and startup reliability decreases, especially with high-load-capacitance crystals. Datasheet Figure 5 shows validated operation at 3.0 V with 12 pF load crystal; for NLV74HCU04ADG, always use ≥2.5 V in oscillator mode and verify with actual crystal ESR and CL per manufacturer recommendations.