MAX3250EAI+T SSOP-28 Transceiver ADI Original stock

describe

MAX3250 is a 3.0V to 5.5V power supply, ± 50V isolated EIA/TIA-232 and V.28/V.24 communication interface with high data rate capability. MAX3250 is a dual-mode component that operates with a difference of up to ± 50V between the RS-232 side and the logic side (ISOCOM to GND). This makes the device very suitable for working under high common mode voltage noise conditions. If the RS-232 line is accidentally short circuited to the+24V or ± 48V power bus, this function will not damage the device.

MAX3250 is powered by a single 3V to 5.5V power supply on the logic side. The power supply is transferred from the logic side to the isolation side through an external capacitor of ± 100V.

MAX3250 has two receivers (Rx) and two drivers (Tx), ensuring operation at a data rate of 250kbps while maintaining RS-232 output level. This transceiver has a proprietary low dropout transmitter output stage, providing true RS-232 performance from 3V to 5.5V supply with dual charge pumps. This device has a faulty open drain output to display excessive isolation side voltage of any RS-232 input. This output can drive alarm LEDs or be monitored by the processor to prevent operation under these conditions. The receiver output has high impedance during shutdown, allowing for multiple interfaces (IrDA RS-232, RS-485) connected to the same UART.

MAX3250 has a space saving 28 pin SSOP package.


Benefits and Features
• Isolation Breaks Ground Loops Due to High Common
Mode Voltages While Maintaining Data Rate
• ±50V Isolation
• 250kbps Guaranteed Data Rate
• FAULT Output Signals Excessive Isolated-Side
Voltage
• Integration of Isolation and RS-232 Saves Space
• SSOP Package
• Shutdown Allows Multiple Interfaces (IrDA, RS-232,
RS-485) to be Connected to the Same UART
• High-Impedance Transmitter and Receiver
Outputs in Shutdown
• 20µA Supply Current in Shutdown
• Inductorless/Transformerless Design Simplifies EMI
Compliance
• Low-Cost Replacement for Opto-Isolated
Transceivers

• Meets EIA/TIA-232 Specifications Down to 3.0V

Applications
Industrial Control
Programmable Logic Controller
Point-of-Sale Equipment
PC-to-Router Connections
Diagnostic Ports
Telecom Equipment

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