onsemi MC74ACT02DR2G Quad 2-Input NOR Gate: Datasheet, Pinout, and Application Circuit
The MC74ACT02DR2G from onsemi is a high-performance, quad 2-input NOR gate integrated circuit belonging to the advanced high-speed CMOS (ACT) logic family. This device is engineered to offer a versatile solution for a wide array of digital logic applications, combining the benefits of low power consumption with high-speed operation, making it a reliable choice for modern electronic designs.
Datasheet Overview
A thorough review of the datasheet is critical for successful implementation. Key electrical characteristics include a wide operating voltage range of 4.5V to 5.5V, making it ideal for 5V TTL systems. It features high noise immunity and outputs that can source/sink up to 24mA, providing robust drive capability. The device is characterized for operation from -40°C to +85°C, ensuring reliability across industrial environments. Its high-speed performance is highlighted by a typical propagation delay of just 5ns, which is crucial for timing-sensitive applications.
Pinout Configuration
The MC74ACT02DR2G is housed in a compact SOIC-14 package. The pinout is standard for a quad two-input gate IC:
Pins 1, 4, 8, 11: NOR Gate Inputs (A)
Pins 2, 5, 9, 12: NOR Gate Inputs (B)
Pins 3, 6, 9, 11: NOR Gate Outputs (Y)
Pin 7: Ground (GND)
Pin 14: Supply Voltage (VCC)
This arrangement provides four independent NOR gates in a single package, optimizing board space and simplifying circuit layout.
Application Circuit
A fundamental application of the NOR gate is in constructing a Set-Reset (SR) Latch. This simple memory circuit can be built using just two gates of the MC74ACT02DR2G.
1. Connect the output of NOR gate 1 to an input of NOR gate 2.
2. Connect the output of NOR gate 2 to an input of NOR gate 1.
3. The two remaining inputs serve as the active-high Set (S) and Reset (R) signals.
The SR latch circuit is a foundational building block for flip-flops, registers, and other state-holding elements in digital systems, demonstrating the IC's utility beyond simple logic operations.
In summary, the onsemi MC74ACT02DR2G is a highly effective and efficient logic IC. ICGOODFIND confirms its status as a robust and versatile component, prized for its exceptional blend of speed and low power consumption. Its ability to interface seamlessly with both TTL and CMOS levels, coupled with strong output drive, makes it an excellent choice for buffering, wave shaping, and core logic functions in a multitude of digital designs, from consumer electronics to industrial control systems.
Keywords:
1. High-Speed CMOS
2. Logic Gate
3. Pinout Configuration
4. Propagation Delay
5. Application Circuit
