STMicroelectronics M74HCT374B1R Octal D-Type Flip-Flop

The M74HCT374B1R is a high-speed CMOS Octal D-Type Flip-Flop with 3-state outputs manufactured by STMicroelectronics. This integrated circuit is designed to meet the stringent requirements of both high-speed and low-power applications, making it a versatile choice for a wide range of digital systems. The M74HCT374B1R is particularly well-suited for use in buffer registers, shift registers, and as a storage element for 8-bit data in various applications.

Constructed with silicon gate CMOS technology, the M74HCT374B1R ensures compatibility with all CMOS and TTL logic levels. It has the same speed performance of LSTTL combined with the CMOS low power consumption. The device features eight edge-triggered flip-flops with individual D-type inputs and 3-state outputs. The flip-flops move to the high impedance state during a power-down condition, ensuring no erroneous data is transmitted.

The 3-state outputs (nQ) are controlled by the output enable input (nOE). When the output enable (nOE) is high, the outputs are in a high impedance state. This feature allows for the use of common data lines, where multiple M74HCT374B1R devices can share the same data bus without the risk of bus contention. The clock input (nCP) is a common element that triggers the state change of all flip-flops on the rising edge, ensuring data synchronization.

The M74HCT374B1R operates at a voltage range of 4.5V to 5.5V, which is typical for 5V digital systems. Its low power consumption and high noise immunity are achieved through CMOS technology, making it an ideal choice for interfacing with high-speed logic families such as HCT and HCU. The device is available in a standard DIP20 or SO20 package, providing flexibility in hardware design and PCB layout.

The M74HCT374B1R is characterized for operation from -55°C to +125°C, ensuring reliable performance across a wide range of environmental conditions. With its robust design and compatibility with industry-standard logic levels, the M74HCT374B1R from STMicroelectronics is an excellent choice for designers looking to incorporate reliable flip-flop functionality into their digital applications.