onsemi MC74VHCT00ADR2

Overview

MC74VHCT00ADR2 from onsemi is a quad 2-input NAND gate in SOIC-14 package, fabricated with silicon gate CMOS technology. It delivers 5.0 ns typical propagation delay at 5 V, supports 3.0–5.5 V operation, features TTL-compatible inputs (VIL = 0.8 V, VIH = 2.0 V), and enables logic-level translation between 3 V and 5 V systems in industrial control interfaces.

For engineers reviewing the MC74VHCT00ADR2 datasheet, pinout, applications, or equivalent options, key selection criteria include input overvoltage tolerance up to 7 V, power-down protection on all I/O, balanced propagation delays, and compatibility with standard logic families in mixed-voltage digital systems.

Technical Context

The MC74VHCT00ADR2 implements four independent NAND gates using a three-stage internal architecture with buffered outputs for high noise immunity. Its input structure tolerates up to 7 V regardless of VCC, enabling safe interfacing between 3.0 V and 5.0 V domains without external level shifters.

Each gate exhibits matched tPLH/tPHL propagation delays (±0.5 ns typical skew), operates across −55°C to +125°C, and maintains full 5 V CMOS output swing while accepting TTL-level inputs - making it suitable for legacy system upgrades and voltage-domain bridging in embedded controllers.

Key Specifications

Pinout & Package

MC74VHCT00ADR2 is housed in a 14-pin SOIC package (Case 751A, DT suffix), with 1.27 mm pitch, body width 3.9 mm, and JEDEC-standard footprint compatible with automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74VHCT00APW and 74VHC00M, the MC74VHCT00ADR2 uniquely combines SOIC manufacturability, 7 V input tolerance, and TTL compatibility - making it the only option among the three that safely bridges 3 V and 5 V domains without redesigning PCB layout or adding external components.

Availability

MC74VHCT00ADR2 is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, and medical infusion pump control requiring stable component supply and long-term lifecycle support.

Supply support for MC74VHCT00ADR2 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The VHCT logic family - including MC74VHCT00ADR2 - was designed specifically for mixed-voltage system interfacing, combining TTL input compatibility, wide VCC range, and robust I/O protection to simplify legacy-to-modern migration in industrial and automotive electronics.

FAQ

What is the maximum input voltage rating for MC74VHCT00ADR2, and does it depend on VCC?

The MC74VHCT00ADR2 supports DC input voltages from −0.5 V to +7.0 V on all pins, independent of VCC level. This allows safe operation when interfacing 5 V signals into a 3.3 V system without clamping diodes. The input protection circuitry remains active even when VCC = 0 V, making MC74VHCT00ADR2 suitable for hot-swap and battery-backup applications where supply sequencing is uncontrolled.

Can MC74VHCT00ADR2 be used as a level translator between 1.8 V and 3.0 V logic domains?

Yes, MC74VHCT00ADR2 is explicitly rated for use as a logic-level translator from 1.8 V CMOS logic to 3.0 V CMOS logic while operating at the higher-voltage supply. Its TTL-compatible input thresholds (VIL = 0.8 V, VIH = 2.0 V) ensure reliable recognition of 1.8 V logic highs, and its full 3.0 V output swing satisfies downstream 3.0 V CMOS input requirements - all verified in the official onsemi datasheet revision 7.

What is the worst-case propagation delay for MC74VHCT00ADR2 at 125°C and VCC = 5.0 V?

At TA = 125°C and VCC = 5.0 V ± 0.5 V with CL = 50 pF, the maximum propagation delay (tPLH/tPHL) for MC74VHCT00ADR2 is 10.5 ns. This value is specified in the AC Electrical Characteristics table and accounts for process, voltage, and temperature extremes - ensuring timing closure in high-temperature industrial environments where MC74VHCT00ADR2 is commonly deployed.

Does MC74VHCT00ADR2 have power-down protection on both inputs and outputs?

Yes, MC74VHCT00ADR2 includes power-down protection on all inputs and outputs. When VCC = 0 V, the input protection circuitry prevents back-powering of the supply rail, and the output structures remain high-impedance and non-destructive. This feature is critical for systems with partial power cycling, such as modular instrumentation or hot-pluggable I/O cards where MC74VHCT00ADR2 may be powered independently from its connected logic.

Is MC74VHCT00ADR2 compliant with RoHS and lead-free soldering standards?

Yes, MC74VHCT00ADR2 is Pb-free and RoHS compliant per EU Directive 2011/65/EU. It is qualified for lead-free reflow soldering per JESD204B, with a peak temperature rating of 260°C for 10 seconds. The "G" suffix in the full orderable part number (MC74VHCT00ADR2G) explicitly denotes the Pb-free version, and this compliance is documented in the onsemi ordering information section and packaging specification BRD8011/D.