MC74VHC00MELG

Inverter Gates Overview

The MC74VHC00MELG is a single-function logic gate manufactured by onsemi, belonging to the VHC (Very High Speed CMOS) series. It implements a quad 2-input NAND logic function within a single integrated circuit package. The device operates within a supply voltage range of 2.0 V to 5.5 V and supports surface-mount installation in an SOIC-14 package. Key electrical characteristics include a typical propagation delay of 4.1 ns at 5.0 V, low power dissipation with maximum quiescent current of 4.0 µA at 25°C, and high noise immunity. The inputs provide protection against voltages up to 7 V, facilitating interface between 3 V and 5 V systems.

Inverter Gates Feature Summary

• Advanced high-speed CMOS technology providing operation speeds comparable to Bipolar Schottky TTL while maintaining low power consumption.
• Input structures tolerant to voltages up to 7 V, enabling safe interfacing between 3 V and 5 V logic circuits regardless of supply voltage.
• High noise immunity with defined noise margins relative to the supply voltage, ensuring stable output performance.
• Power-down protection provided on inputs to prevent excessive current draw during standby or unpowered states.

Inverter Gates Applications

• Interface circuits connecting 3 V logic domains to 5 V logic domains
• General-purpose digital logic processing in consumer electronics
• Industrial control systems requiring high noise immunity
• Telecommunications equipment utilizing standard logic families

Inverter Gates Procurement Notes

Verify the specific suffix MELG corresponds to the required SOIC-14 package variant and lead-free compliance status. Confirm that the VHC series designation aligns with the target voltage levels and speed requirements for the design. Check for any recent obsolescence notices or lifecycle changes from onsemi, as availability may vary. Ensure the ordering part number matches the exact pinout and electrical specifications required by the schematic.

Inverter Gates Selection Notes

Select this component when a quad 2-input NAND gate is required with high switching speeds and compatibility across mixed-voltage environments. The VHC series offers superior speed compared to standard HC devices while maintaining CMOS power efficiency. Consider the 7 V input tolerance if interfacing with legacy 5 V systems from lower voltage sources. Verify that the SOIC-14 package fits the PCB footprint constraints and thermal management needs of the application.

Inverter Gates Part Context

This component is part of onsemi's extensive portfolio of standard logic integrated circuits. The VHC family represents advanced CMOS technology designed to replace slower bipolar technologies in high-speed applications. It shares functional compatibility with other industry-standard logic families, simplifying migration and design reuse across different product lines and generations of electronic equipment.

Inverter Gates Replacement Considerations

Direct substitutes include other MC74VHC00 variants from onsemi with different packaging options, such as TSSOP or DFN, provided the pinout remains compatible. Cross-brand equivalents from manufacturers like Texas Instruments or NXP offering VHCT or VHC series NAND gates may be suitable if electrical parameters match. Verify that any replacement maintains the same 2.0 V to 5.5 V operating range and 7 V input tolerance.