onsemi MC74HC00AD

Overview

MC74HC00AD from onsemi is a quad 2-input NAND gate in SOIC-14 package, implementing standard CMOS logic with 2–6 V supply operation, 10 LSTTL load drive capability, and AEC-Q100 qualification for automotive use. It serves as a fundamental combinational logic element in digital control, interface buffering, and signal conditioning circuits.

For engineers reviewing the MC74HC00AD datasheet, pinout, applications, or equivalent options, key selection considerations include its −Q automotive qualification, SOIC-14 footprint compatibility with LS00, guaranteed propagation delay ≤110 ns at 2.0 V, and input compatibility with both CMOS and LSTTL (with pullups).

Technical Context

The MC74HC00AD integrates four independent NAND gates on a single silicon-gate CMOS die, with each gate exhibiting identical truth table behavior (Y = A·B) and symmetric AC/DC performance across all channels. Its inputs tolerate LSTTL voltage levels when externally pulled up, and outputs directly interface to CMOS, NMOS, and TTL loads without level-shifting.

Designed for robust operation across −55 °C to +125 °C, the device meets JEDEC Std. No. 7A, supports Pb-free and RoHS-compliant assembly, and features low input current (±0.1 µA max at 6 V), high noise immunity, and ESD protection >2000 V HBM - all verified under AEC-Q100 stress test conditions.

Key Specifications

Pinout & Package

MC74HC00AD is housed in a 14-pin SOIC package (Case 751A), with 1.27 mm pitch, 8.75 mm × 3.90 mm body, and gull-wing leads suitable for reflow soldering. Pin 1 is marked by a notch or beveled corner; pin 7 is GND, pin 14 is VCC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad NAND gate applications.

Compared with SN74HC00DR and 74HC00D,118, the MC74HC00AD uniquely delivers AEC-Q100 Grade 1 qualification, verified −55 °C startup capability, and onsemi's automotive PPAP process support - making it the only choice for production automotive ECUs requiring zero-defect traceability and thermal robustness.

Availability

MC74HC00AD is available at Aetrix Electronics and suitable for automotive body control, industrial PLC I/O conditioning, consumer appliance safety interlocks, and medical equipment interface logic requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MC74HC00AD 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 (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and medical markets.

The MC74HC00AD belongs to onsemi's HC logic family - designed specifically for high-reliability, wide-temperature digital control in automotive and industrial systems where pin-compatible LS/TTL upgrades and AEC-Q100 compliance are mandatory.

FAQ

What is the maximum operating temperature for MC74HC00AD?

The MC74HC00AD is rated for operation from −55 °C to +125 °C ambient temperature. This full industrial-plus-automotive range is validated per AEC-Q100 stress testing and confirmed in the Recommended Operating Conditions table of the official datasheet. The MC74HC00AD maintains specified timing and DC parameters across this entire range, enabling deployment in engine compartments and industrial enclosures without derating.

Is MC74HC00AD pin-compatible with the 74LS00?

Yes, the MC74HC00AD is explicitly designed to be pinout-identical to the 74LS00, as stated in the datasheet: "The MC74HC00A is identical in pinout to the LS00." All 14 pins - including inputs, outputs, VCC, and GND - occupy identical positions. However, note that while pinout matches, the MC74HC00AD uses CMOS technology and requires appropriate supply voltage (2–6 V) and input handling (pullups for LSTTL compatibility), unlike the bipolar LS00.

Does MC74HC00AD support 3.3 V logic systems?

Yes, the MC74HC00AD operates fully across 2.0 V to 6.0 V, including standard 3.3 V supply rails. At VCC = 3.3 V, it guarantees VIH ≥ 2.1 V and VIL ≤ 0.9 V, providing >0.6 V noise margin. Propagation delay is ≤40 ns (typical) and ≤55 ns (max at 85 °C), making the MC74HC00AD suitable for 3.3 V FPGA/CPLD glue logic, microcontroller peripheral interfacing, and mixed-voltage board designs.

What does the "−Q" suffix mean in MC74HC00ADTR2G−Q*?

The "−Q" suffix in MC74HC00ADTR2G−Q* indicates AEC-Q100 qualification and PPAP capability for automotive applications. It denotes unique site and process control requirements, including enhanced traceability, lot-level qualification, and failure analysis protocols. The MC74HC00AD itself carries this qualification, and the "−Q" marking appears on devices shipped in automotive-grade lots - critical for Tier 1 suppliers requiring full automotive audit readiness.

Can MC74HC00AD drive LED indicators directly?

Yes, the MC74HC00AD can drive standard 2 mA LEDs directly using its output pins, as each output sources/sinks up to ±25 mA. For example, connecting an LED anode to VCC and cathode to an MC74HC00AD output (active-low configuration) yields ~2–5 mA drive at 5 V with a 1 kΩ series resistor - well within safe limits. Always verify current with actual VCC and forward voltage; the MC74HC00AD's VOL ≤ 0.4 V at 5.2 mA ensures reliable low-state brightness.