NXP Semiconductors 74HCT04D/AUJ

Overview

74HCT04D/AUJ from Nexperia is a hex CMOS inverter IC with TTL-compatible input thresholds, operating from 4.5 V to 5.5 V supply, delivering 6 independent inverting logic functions with propagation delay ≤29 ns at 5 V and CL = 50 pF, used for signal inversion, waveform shaping, and clock buffering in industrial control and digital interface circuits.

For engineers reviewing the 74HCT04D/AUJ datasheet, 74HCT04D/AUJ pinout, 74HCT04D/AUJ application, or 74HCT04D/AUJ equivalent, this page provides verified functional identity, SO14 package mapping, confirmed TTL-level input compatibility, static/dynamic electrical specs across -40 °C to +125 °C, and validated alternative part options for logic-level translation and noise-immune inversion tasks.

Technical Context

The 74HCT04D/AUJ implements six independent CMOS inverter gates using silicon-gate technology, with input clamping diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are applied. Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure reliable level translation from legacy 5 V TTL sources.

Each gate features rail-to-rail CMOS output drive capability (VOH ≥ 3.7 V at IO = –4 mA, VOL ≤ 0.4 V at IO = 5.2 mA), low static current (ICC ≤ 40 μA at 5.5 V), and high noise immunity supported by 100 mA latch-up robustness per JESD78 Class II Level B.

Key Specifications

Pinout & Package

74HCT04D/AUJ uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm pitch, 1.75 mm max height, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT04D/AUJ, the 74HCT04PW offers space savings at the cost of assembly complexity, while SN74HCT04DR delivers lower static power with no trade-off in speed or drive-making both viable alternatives depending on layout constraints or power budget priorities.

Availability

74HCT04D/AUJ is available at Aetrix Electronics and suitable for industrial control systems, digital sensor interfaces, and power sequencing circuits requiring stable component supply with guaranteed long-term availability and full traceability.

Supply support for 74HCT04D/AUJ 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 technologies, delivering high-performance logic, analog, and MOSFET solutions with emphasis on reliability and manufacturability.

The 74HCT04D/AUJ belongs to Nexperia's 74HCT logic family, engineered specifically for seamless integration between TTL-based legacy systems and modern CMOS logic domains while maintaining industrial-grade temperature and ESD robustness.

FAQ

What is the maximum operating supply voltage for the 74HCT04D/AUJ?

The absolute maximum supply voltage for the 74HCT04D/AUJ is +7 V, but the recommended operating range is strictly 4.5 V to 5.5 V per datasheet Table 5. Operating outside this range may cause undefined logic behavior or accelerated parametric drift, and sustained use above 5.5 V voids specification guarantees for VIH, VOL, and propagation delay. The 74HCT04D/AUJ is not rated for 3.3 V operation.

Does the 74HCT04D/AUJ support mixed-voltage interfacing, such as connecting to a 3.3 V microcontroller?

No-the 74HCT04D/AUJ is designed exclusively for 5 V TTL-compatible operation. Its input thresholds (VIH ≥ 2.0 V, VIL ≤ 0.8 V) and output swing (VOH ≥ 3.7 V at –4 mA) assume a 4.5–5.5 V supply. Direct connection to a 3.3 V microcontroller output risks violating the 74HCT04D/AUJ's minimum VIH requirement and may result in unreliable HIGH detection. A level translator or resistor divider is required for safe interfacing.

What is the thermal resistance (RθJA) of the 74HCT04D/AUJ in its SO14 package?

The 74HCT04D/AUJ in SO14 (SOT108-1) has a typical junction-to-ambient thermal resistance (RθJA) of 110 K/W under standard JEDEC test conditions (1-layer 1-in² copper pad). At maximum ambient temperature (+125 °C) and full load, power dissipation must remain below 227 mW to limit junction temperature to 150 °C. Derating begins linearly at 10.1 mW/K above 100 °C per Table 4.

Can the 74HCT04D/AUJ drive a 50 pF capacitive load at 10 MHz without signal degradation?

Yes-the 74HCT04D/AUJ is characterized with CL = 50 pF in Table 7, showing tpd ≤ 29 ns and tt ≤ 22 ns across –40 °C to +125 °C at VCC = 4.5–5.5 V. At 10 MHz (100 ns period), the total propagation + transition time (<51 ns) consumes only ~51 % of the half-cycle, leaving adequate margin for setup/hold timing. No additional buffering is needed for this load and frequency combination.

Is the 74HCT04D/AUJ pin-compatible with the 74HC04D variant?

Yes-both 74HCT04D/AUJ and 74HC04D share identical SO14 pinout, pin functions, and physical dimensions per Tables 2 and 5. However, their input thresholds differ: 74HC04D requires CMOS-level inputs (VIH = 3.15 V min at 4.5 V), while 74HCT04D/AUJ accepts TTL-level inputs (VIH = 2.0 V min). Swapping them requires verifying source logic family compatibility to avoid misreads.