onsemi MC74HCT04AN

Overview

MC74HCT04AN from onsemi is a hex inverter logic gate IC operating at 4.5–5.5 V supply, with TTL-compatible inputs, CMOS outputs, 18 ns typical propagation delay at 5 V, and ±4 mA output drive capability. It performs digital signal inversion in level-shifting, clock buffering, and noise-immune logic interfacing applications.

For engineers reviewing the MC74HCT04AN datasheet, pinout, applications, or equivalent options, key selection considerations include input threshold compatibility with TTL sources, fan-out capacity in 5 V CMOS systems, AC performance under capacitive load, and through-hole DIP-14 packaging for prototyping and legacy board integration.

Technical Context

The MC74HCT04AN implements six independent CMOS-based inverters using silicon-gate HCMOS technology, ensuring rail-to-rail output swing and guaranteed high/low output voltage levels across temperature and supply variation. Its TTL-compatible Schmitt-trigger-free inputs accept standard 0.8 V / 2.0 V thresholds, enabling direct interface with legacy 74LS and 74F families without external biasing.

Each inverter stage features symmetrical rise/fall times (typ. 15 ns), supports up to 10 LSTTL loads per output, and maintains stable operation from −55 °C to +125 °C - meeting industrial-grade reliability requirements without derating at full V_CC.

Key Specifications

Pinout & Package

MC74HCT04AN is housed in a 14-pin plastic dual in-line package (PDIP-14) with 0.3-inch body width and 0.1-inch lead pitch, suitable for through-hole PCB assembly and breadboard evaluation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74HCT04N and 74VHC04N, the MC74HCT04AN provides guaranteed TTL input compatibility and industrial temperature range out-of-the-box, making it optimal for legacy 5 V system upgrades where signal integrity and drop-in validation are critical.

Availability

MC74HCT04AN is available at Aetrix Electronics and suitable for industrial control logic, digital signal conditioning, microcontroller clock buffering, and legacy system interface applications requiring stable component supply and long-term manufacturability.

Supply support for MC74HCT04AN 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 leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74HCT04AN belongs to onsemi's Standard Logic product line, designed specifically for robust, pin-compatible replacements of legacy TTL logic in industrial and infrastructure systems where reliability and long-lifecycle support are essential.

FAQ

What is the maximum operating frequency supported by the MC74HCT04AN?

The MC74HCT04AN does not specify a maximum clock frequency in its datasheet because it is a combinational logic device without internal clocking. However, with a typical propagation delay of 18 ns and rise/fall times of ~15 ns, it reliably supports signal toggling up to approximately 25 MHz in practical 50 pF-loaded circuits. The MC74HCT04AN performance remains consistent across its full industrial temperature range.

Can the MC74HCT04AN be used with 3.3 V logic inputs?

No - the MC74HCT04AN has TTL-compatible input thresholds (V_IH = 2.0 V min), which are insufficient to reliably recognize 3.3 V logic HIGH levels in all conditions, especially at temperature extremes or with source impedance. For 3.3 V interface, consider the MC74VHC04 or level-shifting solutions. The MC74HCT04AN is optimized for 5 V systems interfacing with legacy TTL sources.

Is the MC74HCT04AN RoHS compliant and lead-free?

Yes, the MC74HCT04AN is RoHS compliant and manufactured with lead-free terminations per J-STD-609 Category 3. It meets EU RoHS Directive 2011/65/EU and China RoHS II requirements. The PDIP-14 package uses matte tin plating over copper leadframe, and full compliance documentation is available via onsemi's quality portal. The MC74HCT04AN carries no exemptions and is fully green-qualified.

Does the MC74HCT04AN have built-in ESD protection?

Yes, the MC74HCT04AN incorporates on-chip ESD protection diodes on all inputs and outputs, rated to ±2 kV HBM per JEDEC JS-001. This allows safe handling during assembly and operation in environments with moderate electrostatic discharge risk. No external protection components are required for typical industrial bench or board-level use. The MC74HCT04AN ESD structure is integrated into the input clamp network and output driver stages.

What is the quiescent supply current of the MC74HCT04AN at 5 V?

The MC74HCT04AN draws a maximum quiescent supply current (I_CC) of 4 µA at V_CC = 5 V and T_A = 25 °C, with typical values below 1 µA. This ultra-low static power enables use in always-on monitoring circuits and battery-backed subsystems without significant drain. The MC74HCT04AN maintains this low I_CC across its full operating temperature range, unlike bipolar TTL equivalents.