MAX9451EHJ+T

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The MAX9451EHJ+T products by Maxim Integrated are Clock/Timing - Application Specific products that provide the flexibility with a high performance clock switch in a very small 3×2 mm package. This is a significant advancement in the world of semiconductor manufacturing and offers system designers an easy way to switch between clock sources or to enable/disable clocks to peripheral chips.

The MAX9451EHJ+T is a low-cost, low-power clock switch designed for applications such as PC main systems and digital televisions. It is capable of handling both analog and digital signals and switching between the two. This allows for a wide variety of applications, including digital television switching, computer motherboard design, and digital transmission.

This clock switch combines the features of a true differential input/output (I/O) with a low-power CMOS logic level control. The I/O pins are consistently forward biased, while the logic level control input pins can be open-drain as well as CMOS logic level. This allows for further flexibility in the application.

The MAX9451EHJ+T has two independent selectable clock outputs, LOUT and HOUT, which can switch between the input and logic level control inputs. This provides access to a wide range of external clock sources and the flexibility to switch between them. Additionally, the MAX9451EHJ+T is configurable to either single-ended or differential output, allowing for further system design flexibility.

The clock switch also features an edge detection feature to monitor a clock signal for rising and falling edges. This allows for edge accurate data recovery or other clock based applications. When an edge is detected, the edge input pin (EDGE_IN) drives the logic level control pin (CTL_EN) low or high, depending on the application. This provides an added level of control for switching clocks and monitoring activity.

The internal control and logic circuitry of the MAX9451EHJ+T consume only 35 µA (typical). This allows the switch to be built into low-power circuits, making it ideal for portable designs that require a low-power clock switch. The switch also offers ESD protection of up to 8 kV HBM, allowing it to be used in applications where ESD is a concern.

The MAX9451EHJ+T is a high performance, flexible, and low-power clock switch that can be used in multiple applications. It allows system designers to switch between clock sources or enable/disable clocks to peripheral chips, while offering the flexibility to choose between single-ended or differential outputs. In addition, it offers an edge detection feature as well as ESD protection. This makes the MAX9451EHJ+T a valuable addition to any project requiring high performance and low-power.

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