NXP Semiconductors 74AHC04D/AUJ

Overview

74AHC04D/AUJ from Nexperia is a high-speed Si-gate CMOS hex inverter IC, pin-compatible with LSTTL, providing six independent inverting buffers in a 14-lead SOIC package (SOT108-1). It operates from 2.0 V to 5.5 V, delivers propagation delays as low as 3.0 ns (VCC = 5.0 V, CL = 15 pF), and supports industrial temperature range −40 °C to +125 °C. It is used in digital logic level translation, signal inversion, and clock buffering in embedded control systems.

For engineers reviewing the 74AHC04D/AUJ datasheet, 74AHC04D/AUJ pinout, 74AHC04D/AUJ application, or 74AHC04D/AUJ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts with documented functional and application differences.

Technical Context

The 74AHC04D/AUJ implements six independent CMOS inverter stages with rail-to-rail output swing and TTL-compatible input thresholds only in the AHCT variant - this part (AHC) uses CMOS-level inputs (VIH ≥ 3.85 V at VCC = 5.5 V). Its balanced propagation delays ensure minimal skew across all six channels.

It features input overvoltage tolerance (inputs accept up to 7.0 V regardless of VCC), robust ESD protection (HBM > 2000 V, CDM > 1000 V), and operates reliably under transient load conditions with ±25 mA output drive capability per channel at VCC = 4.5 V.

Key Specifications

Pinout & Package

74AHC04D/AUJ is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin 1 is marked by a notch or index area; the package is RoHS-compliant and lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74AHCT04D and SN74LVC04APW, the 74AHC04D/AUJ uniquely combines wide supply range (2.0–5.5 V), +7.0 V input tolerance, and full −40 °C to +125 °C qualification - making it the preferred choice for ruggedized, mixed-voltage embedded control where reliability and interface flexibility are prioritized over lowest possible static current.

Availability

74AHC04D/AUJ is available at Aetrix Electronics and suitable for motor control logic, digital power sequencing, and industrial sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC04D/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 high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified and industrial-grade components.

The 74AHC04D/AUJ belongs to Nexperia's AHC logic family, engineered for high-speed, low-power, and robust operation in industrial automation, motor drives, and infrastructure equipment where signal integrity and long-term supply stability are essential.

FAQ

What is the maximum supply voltage for the 74AHC04D/AUJ?

The absolute maximum supply voltage (VCC) for the 74AHC04D/AUJ is +7.0 V, per IEC 60134 limiting values. However, the recommended operating range is 2.0 V to 5.5 V. Operating above 5.5 V risks exceeding safe power dissipation limits and may degrade long-term reliability, even if within absolute max ratings. Always refer to Table 4 (Limiting Values) and Table 5 (Recommended Operating Conditions) in the official Nexperia datasheet for 74AHC04D/AUJ to ensure compliant design margins.

Does the 74AHC04D/AUJ support 3.3 V logic levels?

Yes, the 74AHC04D/AUJ fully supports 3.3 V logic operation. At VCC = 3.3 V, its VIH (min) is 2.1 V and VIL (max) is 0.9 V, providing >1.2 V noise margin for standard 3.3 V CMOS outputs. Propagation delay is typically 4.0 ns (CL = 15 pF), and output drive remains ±25 mA. This makes the 74AHC04D/AUJ ideal for interfacing with 3.3 V microcontrollers, FPGAs, and other modern low-voltage logic, while retaining compatibility with 5 V systems via its 2.0–5.5 V supply range.

Is the 74AHC04D/AUJ pin-compatible with the 74LS04?

Yes, the 74AHC04D/AUJ is pin-compatible with the 74LS04 and other standard 14-pin hex inverters (e.g., 74HC04, 74HCT04) in the SO14 (SOT108-1) package. Pin assignments for inputs (1A–6A), outputs (1Y–6Y), GND (pin 7), and VCC (pin 14) match JEDEC-standard pinout. However, electrical behavior differs: 74AHC04D/AUJ draws significantly less quiescent current (<2.0 μA vs. ~8 mA for 74LS04) and offers rail-to-rail CMOS outputs instead of TTL-swing, so verify load and timing compatibility in the target circuit before substitution.

What is the input capacitance of the 74AHC04D/AUJ?

The typical input capacitance (CI) of the 74AHC04D/AUJ is 3 pF, with a maximum of 10 pF across temperature and voltage, as specified in Table 6 of the Nexperia datasheet. This low value minimizes loading on upstream drivers-especially important in high-speed or high-fanout applications-and contributes to the device's ability to maintain fast edge rates without excessive signal degradation. For accurate AC analysis, use 10 pF as the worst-case design value when calculating rise/fall time impact or crosstalk coupling.

Can the 74AHC04D/AUJ drive a 50 pF load at 50 MHz?

No-the 74AHC04D/AUJ is not rated for continuous 50 MHz toggling into 50 pF. Its dynamic characteristics specify propagation delay (e.g., 4.5 ns typ at VCC = 5.0 V, CL = 50 pF), but sustained 50 MHz switching implies ~20 ns period, leaving insufficient margin for setup/hold and output settling. At 50 pF, the 74AHC04D/AUJ is best suited for frequencies ≤10 MHz in noise-sensitive environments. For 50 MHz operation, reduce load capacitance to ≤15 pF (where tpd = 3.0 ns typ) or add a dedicated buffer stage. Always validate with actual board-level measurements using the test circuit in Figure 5 of the 74AHC04D/AUJ datasheet.