The 74HCT374 is a high-speed Si-gate CMOS device from NXP Semiconductors. It is designed to have the same high-speed performance of LSTTL combined with the true CMOS low power consumption. This octal D-type flip-flop features a set of eight edge-triggered, D-type flip-flops with individual D inputs and O outputs. The common clock (CP) and master reset (MR) inputs control all flip-flops.

Key Features

• Logic Type: Octal D-Type Flip-Flop with 3-state outputs
• Output Capability: Bus Driver
• IC Output Type: Tri-state
• Propagation Delay: 16 ns
• Supply Voltage Range: 4.5V to 5.5V
• Operating Temperature: -40°C to +125°C
• Package: Available in multiple package options including SO20, SSOP20, TSSOP20, and DIP20.

Functional Description

The 74HCT374 is an octal positive-edge triggered D-type flip-flop. The device features eight D-type flip-flops with 3-state outputs that are used for bus-oriented applications. Each flip-flop has a separate D input and O output. The common clock (CP) and master reset (MR) inputs load and reset all flip-flops simultaneously.

When the clock input is at a high level, the D input signal, present one set-up time before the low-to-high clock transition, is transferred to the Q output. The 3-state outputs are controlled by the output enable (OE) input. When the OE input is low, the outputs are in the normal mode and display the flip-flop outputs. However, when OE is high, the outputs are in the high-impedance state, allowing them to be used in bus-organized systems.

Applications

The 74HCT374 is ideally suited for interfacing with bus-organized systems because of its 3-state outputs, which can be connected directly to a bus-structured system. Its applications include:

• Buffer/Storage Registers
• Shift Registers
• Bus-Oriented Systems
• Data Storage and Transfer

With its high-speed performance and low power consumption, the 74HCT374 from NXP is a versatile and reliable choice for a wide array of digital logic applications.