The MC74HCT374ADTR2G: A High-Performance Octal D-Type Flip-Flop for Modern Digital Systems

In the realm of digital logic design, the efficient management and storage of data are paramount. The onsemi MC74HCT374ADTR2G stands as a pivotal solution, offering designers a reliable and high-performance octal D-type flip-flop with 3-state outputs. This integrated circuit is engineered to meet the demanding requirements of complex digital systems, including data buses, registers, and buffer storage applications.

Housed in a space-saving TSSOP-20 package, the MC74HCT374ADTR2G integrates eight edge-triggered D-type flip-flops with a common clock (CP) and output enable (OE) control. Each flip-flop captures the logic level present at its D input upon a low-to-high clock transition, storing that data until the next clock cycle. A key feature of this device is its 3-state outputs, which can be placed in a high-impedance state. This allows the outputs to be effectively disconnected from the bus, preventing data contention and enabling seamless connection to a shared bus line in multi-point systems.

A significant advantage of the 'HCT' family is its TTL-compatible inputs. This feature allows the device to interface effortlessly with older TTL logic families while operating at standard CMOS power supply voltages (4.5V to 5.5V), making it an ideal choice for system upgrades and mixed-logic environments. Furthermore, the high-noise immunity characteristic of CMOS technology ensures stable operation in electrically noisy environments, enhancing system reliability.

The device's performance is characterized by its robust output drive capability, with the ability to sink or source up to 6mA at the outputs. This ensures strong signal integrity even when driving multiple inputs. The master reset (MR) pin provides a synchronous reset function, allowing all flip-flops to be cleared to a low state regardless of the input conditions, which is crucial for system initialization.

ICGOOODFIND: The onsemi MC74HCT374ADTR2G is an exceptional choice for designers seeking a versatile, high-speed, and reliable octal flip-flop. Its combination of 3-state outputs, TTL compatibility, and robust performance in a compact package makes it an indispensable component for modern data routing, processing, and storage applications.

Keywords: Octal D-Type Flip-Flop, 3-State Outputs, TTL-Compatible, High-Noise Immunity, Bus Interface