MAX3490CSA

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The MAX3490CSA is a driver/receiver designed for transmission of high-speed differential signaling over a cable or printed circuit board. The driver/receiver feature a reduced toggle jitter and has a very low-power consumption per channel, making it ideal for power sensitive applications. It also includes an adaptive cable pre-emphasis feature that reduces crosstalk along a transmission line.

The device has two receiver channels and one driver channel. The receiver channels are designed to accept a differential signal with common mode voltages up to the full power supply range. The receiver outputs have logic threshold options set by a single external resistor. The driver channel produces a differential signal designed for transmission over 50Ω cables. The output voltage swing is ±80 mV split over a range of 45-145 mV, maximising signal integrity.

The MAX3490CSA operates from a single 3.3 V or 5 V supply. The power consumption is typically 1.25 mW per channel in shutdown mode, making it ideal for low-power applications. The device also includes an enable pin and a fourth pin, which enables an adjustable rise and fall time when transmitting data. This function allows users to reduce jitter, boost signal integrity, and make the signal more immune to EMI (electromagnetic interference).

The device also includes a slew rate control feature that gives users the ability to control the rate of rise and fall of the signal to prevent signal degradation. The slew rate is controlled by a capacitor connected to the output signal pins.

The MAX3490CSA is ideally suited for high-performance applications such as digital video interfaces, high-speed networking applications, and backplane systems. The low-power consumption and high signal integrity make it ideal for these applications.

In conclusion, the MAX3490CSA is an ideal choice for applications requiring transmission of high-speed differential signals with excellent signal integrity. The low-power consumption, adjustable slew rate control, and pre-emphasis feature make it well suited for high-performance applications.

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