SY89831UMG

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The SY89831UMG is a high performance non-inverting 3-to-1 multiplexer clock buffer/driver with three differential input ports and one selectable differential output port. It supports up to three independent clock sources (input ports P0/P1, P2/P3, and P4/P5) and one dominant active clock source selected by a single control bit (SEL) of logic 0 or 1.

The selected clock source\'s differential outputs are forwarded to the output port. It is designed to be used with a system clock distribution structure and provides a complete timing solution for high performance applications. The SY89831UMG provides low jitter, low propagation delay and reduced power consumption compared with other ideal clock drivers.

Application Field

The SY89831UMG offers the best performance for a broad range of bus timings and system clock frequencies. It is suitable for applications such as networking and storage equipment, as well as telecom line cards. Its high clarity, high fidelity, and low skew clocking make it ideal for a variety of Power Architectureâ„¢ or PC applications.

The SY89831UMG is also ideal for providing clock signals for stereophonic audio systems, MP3 players, digital televisions, microwaves, security systems, and other related digital systems.

Working Principle

The SY89831UMG has three differential input ports (P0/P1, P2/P3, and P4/P5) and one selectable differential output port (OUT/OUT-). The inputs of the SY89831UMG can work with a voltage up to 3.3V and the output can drive up to 8 loads (8Ohm-3Vmin termination). The output of the SY89831UMG operates over an extended temperature range, allowing it to be suitable for both commercial and industrial applications.

The SY89831UMG supports up to three independent clock sources and one dominant active clock source selected by a single control bit (SEL) of logic 0 or 1. This control bit can be driven on a separate signal or can be driven at the same input of the signal. The outputs of the device are synchronized with the selected clock source, which reduces the source-to-output skew. The differential input structure helps reduce noise and provides clock integrity across the board.

In order to control the power consumption, the SY89831UMG dynamically switches the output port on and off through the enable and disable pin connection. With the enable/disable functionality, the user can reduce the power consumption while putting the device in standby mode. In addition, it provides an ESD protection circuit that can protect the output stage from electrical noise.

The SY89831UMG is an active device that requires an external supply voltage to operate. The device requires 3.3V to observe the specifications and its power dissipation is low, allowing it to achieve its low power requirements. In addition, the SY89831UMG includes a built-in thermal shutdown protection mechanism that helps prevent excessive power dissipation.

Conclusion

The SY89831UMG is a high performance, non-inverting 3-to-1 multiplexer clock buffer/driver with three differential input ports and one selectable differential output port. It provides low jitter, low propagation delay and reduced power consumption compared with other ideal clock drivers. It is well-suited for applications such as networking and storage equipment, as well as telecom line cards. It also offers an ESD protection circuit and thermal shutdown protection for extended temperature range. The SY89831UMG is an excellent choice for providing clock signals in Power Architectureâ„¢ or PC applications.

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