onsemi M74VHC1GT08DTT1G Single Gate AND Logic Buffer IC: Datasheet, Pinout, and Application Circuit
The onsemi M74VHC1GT08DTT1G is a highly integrated, single 2-input AND gate buffer fabricated with advanced CMOS technology. This device is part of the popular VHC (Very High-Speed CMOS) family, renowned for its high-speed operation while maintaining low power consumption. Housed in a space-saving SC-70-5 / SOT-353 package, it is an ideal solution for modern portable and space-constrained applications where board real estate is at a premium.
This single-gate IC performs the logical AND function, where the output Y becomes HIGH only if both input A AND input B are HIGH. It incorporates a buffer on its output, providing increased current drive capability, improved noise margin, and better isolation for the input signal. This makes it perfect for interfacing between different logic families or driving loads like LEDs and small relays.
Key Features and Datasheet Highlights
A review of the datasheet reveals several critical specifications that define this component's performance:
High-Speed Operation: Features tPD = 4.3 ns (typ.) at 5V, enabling efficient use in high-frequency circuits.
Low Power Consumption: With a typical ICC of 1 μA, it is exceptionally efficient, making it suitable for battery-powered devices.
Wide Operating Voltage Range: Can operate from 1.8V to 5.5V, allowing for seamless integration in both 3.3V and 5V systems.
High Output Drive: Capable of sourcing/sinking up to 8 mA at 5V, providing robust output current for driving various loads.
Robust ESD Protection: Offers > 2000 V ESD protection per MIL-STD-883, Method 3015, enhancing the reliability and durability of the design.
Pinout Configuration
The pinout for the 5-pin SC-70 package is as follows:
Pin 1 (A): Input A
Pin 2 (B): Input B
Pin 3 (GND): Ground
Pin 4 (Y): Output
Pin 5 (VCC): Supply Voltage
Typical Application Circuit
A common application for the M74VHC1GT08DTT1G is as a gated clock buffer or a control enable circuit. The schematic below shows how to use it to condition a control signal.
Circuit Operation:
1. The circuit is powered by a 3.3V or 5V supply connected between VCC (Pin 5) and GND (Pin 3).
2. A control signal (e.g., an "Enable" from a microcontroller) is applied to input A (Pin 1).
3. A second control signal or a constant HIGH logic level is connected to input B (Pin 2).
4. The output Y (Pin 4) will only be HIGH when both input A and input B are HIGH. This output can then be used to enable another IC, trigger an event, or drive an LED through a current-limiting resistor (R1).
This setup ensures a downstream component only receives a signal when all necessary conditions are met, providing simple but effective system management.
The onsemi M74VHC1GT08DTT1G stands out as an exceptional component for designers seeking a compact, high-performance, and versatile single-gate logic solution. Its combination of very high speed, low power dissipation, and a wide voltage range makes it an indispensable tool for cleaning up digital signals, implementing simple glue logic, and managing power sequencing in a vast array of modern electronics, from smartphones and IoT sensors to industrial control systems.
Keywords:
VHC CMOS Logic
Single Gate AND Buffer
SC-70-5 Package
Wide Operating Voltage
Low Power Consumption
