ICS558AG-02LNT

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Clock buffering, or clock distribution, is essential for synchronizing digital systems such as computers and microprocessors. Without clock buffers and drivers, the timing of digital signals could become out of sync, leading to erroneous system results or even system failure. The ICS558AG-02LNT is a differential output clock buffer IC that is designed to support applications requiring low-skew, wide operating temperature range and low power operation.

The ICS558AG-02LNT’s primary application is that of an economical, robust, low power clock buffer for digital circuit design with wide operating temperature range (industrial (-40°C to 85°C)). It features low-skew, high-driving capability, fanout and wide maximum frequency. The device draws zero power from the external clock buffer, and thus can ensure extremely low power operation. This makes it well suited for systems with tight power budgets.

The ICS558AG-02LNT is composed of 2 differential outputs (Y and Z). Its Z-output is inverting and has similar characteristics as Y-output but with opposite phase. The part works in "passive" mode when no external power is applied and the clock output (Y or Z) is driven by the Y or Z input. When the external power source is applied, the clock outputs (Y & Z) can be selected by the control pin in order to drive one to six downstream FETs.

The ICS558AG-02LNT operates at maximum clock frequency of 250MHz. It is specified for industrial temperature range of (-40°C to 85°C).

The primary benefit of using a differential clock buffer, such as the ICS558AG-02LNT, is that the part can be used to drive a low-skew, differential digital signal from a single-ended clock input. This eliminates the need for additional, on-chip buffering or routing of clock signals to distant locations in order to achieve the desired timing performance. This makes the ICS558AG-02LNT well-suited for clock buffering applications, such as those found in microprocessor, digital ASICs and many other high-speed systems.

The working principle of the ICS558AG-02LNT is simple. The part works in a “passive” mode when no external power is applied. When the external power source is applied, the clock outputs (Y & Z) can be selected by the control pin in order to drive one to six downstream FETs. The ICS558AG-02LNT takes the input clock signal (Y) and amplifies it at the output (Y or Z) using a low skew, high speed, differential amplifier. In essence, the part takes a single ended clock signal and converts it to a differential clock signal.

The differential clock can then be used to drive downstream devices with high accuracy and lower clock skew. The differential clock also cancels out ground bounce, reducing random noise and jitter on the output clock. Additionally, the differential clock allows for greater flexibility when it comes to routing high-speed signals, as each output (Y & Z) can be directly connected to more than one receiver.

In conclusion, the ICS558AG-02LNT is an ideal solution for synchronizing logic systems requiring low-skew, wide operating temperature ranges, and lower power consumption. Its use as a differential output clock buffer has improved system performance by eliminating clock skew between different logic sub-blocks, as well as reducing random noise and jitter due to ground bounce. With its high frequency, wide operating temperature range and low power consumption, the ICS558AG-02LNT is a versatile and economical solution for clock distribution in today’s demanding digital systems.

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