MAX3244EEWI

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The MAX3244EEWI is an ultra-low power, Slew-Rate Limited, 3-V to 5.5-V, RS-232 line driver/receiver with ±15-kV ESD protection, marketed by Maxim Integrated.

It’s a low-voltage, low-power, low-capability driver/receiver designed to interface data terminal equipment (DTE) with Data Communications Equipment (DCE) in applications such as popular RS-232 serial ports and modems.

The MAX3244EEWI not only works as a standard driver, but also offers high-quality performance in high-speed, turn-on/off, and disable modes. This makes it highly suitable for applications which require toggle between active and idle states, like xDSL modems, GPS receivers, Bluetooth radios, and other emerging products requiring a standard low-capability RS-232 solution.

The device caters for various application field including mobile, signaling and measurement instruments. Widely used in product designs, this is the integrated circuit (IC) of choice for those product designs that need low current consumption, high speed and low power consumption.

The MAX3244EEWI is highly integrated and offers long-term stability, with a wide temperature operating range, very few external components and short lead-times. The device provides up to +/- 15-kV ESD protection with no performance degradation or loss of function at any time.

The MAX3244EEWI features an integrated 1.2-V LDO (low drop-out) regulator and 5 to 16.7V wide voltage range supply. The device supports data rates up to 1 Mbps for line driver and up to 921.6 kbps for the line receiver. It also offers a low-capability RS-232 interface and supports full-duplex communication at its maximum data rate.

The MAX3244EEWI has two main blocks, a driver and a receiver. The driver block is composed of an output stage and a logic block. The logic block contains the logic functions and control signals to drive the output stage. The logic signals include the TXD signal: signal (Data Transmitted), the direction control signal (RTS signal) and the signal to enable or disable the TXD Pin (DTR signal). The output stage consists of a high-speed driver (TXD signal) and an RS-232 protection network.

The receiver block is composed of a high-speed differential receiver (RXD signal) and a slew rate limiter filter which provides improved ESD protection. The receiver is protected against ESD transients by the integrated protection network to assure electrostatic discharge protection up to +/-15-kV.

In conclusion, the MAX3244EEWI offers a captivating combination of low-current consumption, high speed, low power consumption and flexible protection circuitry, making it the perfect choice for standard low-capability RS-232 applications.

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