onsemi MC74HC00ADR2

Overview

MC74HC00ADR2 from onsemi is a quad 2-input NAND gate in high-performance silicon-gate CMOS technology, pin-compatible with LS00 TTL logic. It operates from 2 V to 6 V supply, delivers ±25 mA output drive per pin, and supports −55°C to +125°C industrial/automotive temperature range. Used for digital logic inversion and signal conditioning in power management sequencers and microcontroller peripheral interfaces.

For engineers reviewing the MC74HC00ADR2 datasheet, pinout, applications, or equivalent options, this page provides verified package mapping (SOIC-14), confirmed propagation delay (13 ns @ 6 V), input/output voltage thresholds, AEC-Q100 qualification status, and real-world interface compatibility with CMOS, NMOS, and LSTTL loads.

Technical Context

The MC74HC00ADR2 implements four independent NAND gates using silicon-gate CMOS process, achieving rail-to-rail output swing and high noise immunity. Each gate exhibits identical logic behavior (Y = A·B̅) with symmetrical tPLH/tPHL propagation delays and matched transition times across all four channels.

It features CMOS-compatible input thresholds (VIH = 4.2 V min @ VCC = 6 V; VIL = 1.8 V max), low input leakage (±1.0 µA max), and guaranteed output drive of 10 LSTTL loads. The device meets JEDEC Std. No. 7A and is Pb-free, halogen-free, and RoHS compliant.

Key Specifications

Pinout & Package

MC74HC00ADR2 is housed in a 14-pin SOIC-14 (Case 751A) package with 1.27 mm pitch, 8.75 mm × 3.9 mm body, and gull-wing leads. Pin 1 is marked by notch or bevel; 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 74VHC00M, the MC74HC00ADR2 uniquely combines AEC-Q100 Grade 1 qualification, full −55°C to +125°C operation, and SOIC-14 tape-and-reel packaging optimized for automated SMT production in automotive OEM lines.

Availability

MC74HC00ADR2 is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC I/O modules, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MC74HC00ADR2 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74HC00ADR2 belongs to onsemi's HC logic family, engineered for high-noise-immunity digital interfacing in mission-critical systems where reliability across extreme temperatures and supply voltages is mandatory.

FAQ

What is the maximum propagation delay of MC74HC00ADR2 at 5 V supply?

The MC74HC00ADR2 has a maximum propagation delay of 15 ns at VCC = 4.5 V and 16 ns at VCC = 3.0 V, per the AC Characteristics table in the official datasheet. At exactly 5.0 V, interpolation yields ~15.5 ns - but design margin should use the 16 ns value specified for 4.5 V, as no guarantee is provided at 5.0 V alone. All values apply across the full −55°C to +125°C operating range.

Is MC74HC00ADR2 pin-compatible with the original 74LS00 TTL device?

Yes, the MC74HC00ADR2 is explicitly designed with identical pinout to the 74LS00, as stated in the datasheet: "The MC74HC00A is identical in pinout to the LS00." This allows direct replacement in existing LS00-based PCB layouts without redesign. However, note that input thresholds differ: LS00 accepts TTL logic levels, while MC74HC00ADR2 requires CMOS-compatible inputs unless pull-up resistors are added.

Does MC74HC00ADR2 support 3.3 V logic systems?

Yes, MC74HC00ADR2 fully supports 3.3 V operation: its recommended VCC range is 2.0 V to 6.0 V, and DC characteristics (VIH, VIL, VOH, VOL) are guaranteed down to 2.0 V. At VCC = 3.3 V, VIH is guaranteed ≥ 2.31 V and VIL ≤ 1.09 V, ensuring robust interoperability with standard 3.3 V CMOS outputs and inputs. The device draws only 10 µA typical ICC at 3.3 V and 25°C.

What does the "−Q" suffix mean in MC74HC00ADR2G−Q*?

The "−Q" suffix in MC74HC00ADR2G−Q* denotes automotive-grade qualification: it signifies AEC-Q100 compliance, PPAP capability, and adherence to unique site and control change requirements for automotive supply chains. While MC74HC00ADR2 itself carries the −Q qualification, the base part number without −Q (e.g., MC74HC00ADR2G) is the commercial version - both share identical electrical specs and SOIC-14 packaging, but only −Q parts are approved for automotive production.

Can unused inputs on MC74HC00ADR2 be left floating?

No, unused inputs on MC74HC00ADR2 must never be left floating. Per the datasheet's Recommended Operating Conditions note: "Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC)." Floating CMOS inputs cause increased ICC, unpredictable logic states, and potential device damage due to partial turn-on of internal transistors. Tying to VCC or GND via direct connection or 10 kΩ resistor is required for stability and reliability.