IDT74FCT38072DCI

IDT74FCT38072DCI Application Field and Working Principle

The IDT74FCT38072DCI is a low-power, low-skew, clock driver integrated circuit (IC), which is a part of the IDT74FCT family of devices from Integrated Device Technology. This device is capable of driving up to 8 outputs from a single input signal.

This device belongs to the family of clock buffers, drivers and repeaters and is used for distributing and expanding a single clock signal for driving multiple clock signals in parallel with minimum delay. This is useful in systems where many parts of the system need to be synchronized. The device is capable of buffering and distributing clock signals with minimal delay or skews, providing the designer with direct control over input clock signals that need to be duplicated and distributed.

Features

• Low power dissipation
• Low skew between output signals
• Low jitter
• Operates over a wide voltage range
• Inputs ECL compatible
• Eight outputs

Working Principle

The IDT74FCT38072DCI is a low-power 8-input/8-output CMOS clock driver IC. It uses fixed logic levels for both outputs and inputs. A single differential input signal provides the clock signal for the device. This input signal is then buffered, replicated and distributed to 8 outputs, each with its own delay of 1.5ns (typical) and jitter of 1ps (maximum). The output signals are slightly skewed due to the delay line that is built into each buffer, to minimize the overall skew between outputs.

The buffer has a certain set of features to ensure that the output signals retain their low skew and jitter values, even in the presence of noise or other perturbations. These protective features include a output disable control and a circuit that disables the device in response to an under voltage condition. The input buffer is designed such that it can handle an ECL-compatible differential input signal.

The fixed logic levels are designed to be compatible with the logic levels of a wide range of ICs for both input and output. This ensures that the IC can be used in a wide range of systems without modification or special considerations. The device is protected from transients and glitches, and temperature-dependent phenomena are minimized.

Applications

The IDT74FCT38072DCI is typically used in systems that require the synchronization of multiple parts of the system. This includes systems such as computers, embedded systems, communication systems, and various other types of complex hardware. As the device is capable of providing quality outputs despite environmental perturbations or variations, it is also often used in mission-critical applications such as avionics and spacecraft.