Nexperia USA Inc. 74HCU04D,653

Overview

74HCU04D,653 from Nexperia is a hex unbuffered CMOS inverter IC operating from 2.0 V to 6.0 V, featuring six independent inverting gates with clamp diodes on all inputs for overvoltage-tolerant interfacing, balanced propagation delays (6 ns typ. at VCC = 6.0 V, CL = 50 pF), and operation across -40 °C to +125 °C - used in crystal oscillator circuits, linear amplifier biasing, and astable multivibrator timing networks.

For engineers reviewing the 74HCU04D,653 datasheet, 74HCU04D,653 pinout, 74HCU04D,653 application, or 74HCU04D,653 equivalent, key selection criteria include supply voltage range (2.0–6.0 V), input clamping capability, SO14 package thermal derating (10.1 mW/K above 100 °C), and unbuffered gate characteristics enabling analog-mode operation.

Technical Context

The 74HCU04D implements six identical unbuffered inverter stages using standard CMOS technology, each with symmetrical input-to-output propagation delay and no internal buffering - enabling precise phase inversion and direct use in linear analog applications like crystal oscillators and RC-based multivibrators. Its input clamp diodes allow safe interface to signals exceeding VCC when current-limited.

It supports rail-to-rail input and output swing, exhibits high noise immunity (>40% of VCC), and maintains stable switching performance across its full industrial temperature range (-40 °C to +125 °C) with static input leakage <±1.0 μA and dynamic power dissipation capacitance of 10 pF per gate.

Key Specifications

Pinout & Package

74HCU04D,653 is housed in a plastic small outline package (SO14, SOT108-1) with 14 leads, 3.9 mm body width, and standard JEDEC MS-012 footprint. Pin 1 is marked by a notch or index area; the package is lead-free and RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC04D,653, the 74HCU04D,653 offers superior analog-mode flexibility and overvoltage input tolerance, while the SN74HCU04DR provides identical functionality with alternate supply-chain assurance - making it ideal for designs requiring both digital inversion and analog circuit reuse.

Availability

74HCU04D,653 is available at Aetrix Electronics and suitable for crystal oscillator design, linear amplifier biasing, and astable multivibrator timing networks requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for 74HCU04D,653 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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with manufacturing rooted in process innovation and automotive-grade quality systems.

The 74HCU04 belongs to Nexperia's HCU logic family designed specifically for applications demanding unbuffered gate characteristics - including oscillator circuits, analog signal conditioning, and mixed-signal timing functions where traditional buffered inverters fall short.

FAQ

Can 74HCU04D,653 be used as a linear amplifier?

Yes - its unbuffered CMOS structure allows biasing into the linear region using feedback resistors (R1 ≥ 3 kΩ, R2 ≤ 1 MΩ). At VCC = 6.0 V, it delivers ~20 mA/V forward transconductance and 5 MHz unity-gain bandwidth, enabling low-noise amplification of sensor signals or reference voltages without external op-amps.

What is the purpose of the input clamp diodes?

The integrated clamp diodes on each input protect against voltages exceeding VCC or falling below GND by shunting excess current through external series resistors. This enables safe interfacing with 12 V sensors or legacy TTL outputs in mixed-voltage systems without additional protection circuitry.

How does thermal derating work for the SO14 package?

For the SOT108-1 (SO14) package, total power dissipation (Ptot) is rated at 500 mW up to 100 °C ambient; above that, it derates linearly at 10.1 mW per Kelvin. At 125 °C, maximum allowable Ptot drops to 474.75 mW - requiring careful thermal layout and load management in high-temp enclosures.

Is 74HCU04D,653 suitable for automotive applications?

No - although rated from -40 °C to +125 °C, it is not AEC-Q100 qualified and lacks automotive-specific reliability testing, failure mode analysis, or PPAP documentation. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use only in industrial, consumer, or commercial systems.