MAX3238EAI+T

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MAX3238EAI+T is a RS-232 transceiver from Maxim Integrated, particularly one with high-speed capabilities. With an ESD rating of ±15kV HBM, the high-performance transceiver is ideal for applications such as portable or battery-powered systems, serial communication links, anti-vibration or surge protection, automotive, and peripheral or medical device interface.

The MAX3238EAI+T is a high-speed 2-wire, half-duplex transceiver which includes the receiver, transmitter, and associated circuitry (RS-232 transceiver) housed in a 12-pin TSSOP (Thin Shrink Small Outline Package). It meets the requirements of the EIA/TIA-232-F, ITU-T V.24 standards. It provides one-stop shopping for all aspects of RS-232 communication.\'

Application field

The versatile MAX3238EAI+T transceiver can be used in various applications including portable or battery-powered devices, communication links, anti-vibration or surge protection, automotive, and peripheral or medical device interface. Its ultra-low-power consumption makes it ideal for applications where battery power is at a premium. Its fast switching speed enables high-speed data transmission with minimal interference, perfect for data-intensive applications.

Also, the single 3V supply operation of the MAX3238EAI+T makes it perfect for automotive applications and communication interface designs. Its wide range of power supply voltages, 3.0V to 5.5V, allows it to be used in a wide range of consumer, industrial, and automotive applications. The device is also highly reliable, with fault protection on the internal supply voltage and a wide range of temperature operating ranges (-40°C to +85°C).

Working principle

The MAX3238EAI+T is a half-duplex RS-232 transceiver, which means it only operates in one direction at a time and consists of a transmitter, receiver and associated circuitry. It includes an onboard voltage regulator, which provides supply voltages from 3.0V to 5.5V. The voltage regulator allows for single-supply and low-power operation, making it ideal for battery-powered applications.

The receiver input and output are differential, which allows for common-mode rejection and improved noise immunity. In addition, the receiver input has both a high-impedance and a low-impedance mode, facilitating the connection of multiple transceivers in the same configuration. The MAX3238EAI+T also includes a series of data communications signaling levels, including a wake-up interrupt and an output enable signal.

The transceiver’s transmitter is designed exclusively for RS-232 signaling. Its output stages easily drive loads with an output voltage swing greater than or equal to 3V. The transmitter input stage operates in the logic controlled output mode and supports the standard data communication signaling levels. The driver incorporates a slew rate limiter, which minimizes EMI, to reduce the noise of systems operating at high data rates.

In addition, the MAX3238EAI+T features an integrated ESD protection circuit which protects the device from voltage transients up to ±15kV. The ESD protection circuit works in conjunction with an active discharge circuit, which discharges the bus quickly and accurately to the standard RS-232 idle level.

The MAX3238EAI+T can be used in both full-duplex and half-duplex configurations. In full-duplex mode, the transmitter and receiver can be enabled and disabled independently, allowing simultaneous data transfer in two directions. In half-duplex mode, the transmitter and receiver are enabled and disabled at the same time, allowing data to be transferred in one direction only.

The MAX3238EAI+T transceiver is the ideal choice for applications that require high-performance RS-232 communication. Its high-speed capability, low-power consumption, and robust ESD protection make it ideal for a wide variety of portable and automotive applications.

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