MAX3250 ±50V Isolated, 3.0V To 5.5V, 250kbps, 2 Tx/2 Rx, RS-232 Transceiver

The MAX3250 is a 3.0V to 5.5V powered, 50V isolated EIA/TIA-232 and V.28/V.24 Communications Interface with high data-rate capabilities. The MAX3250 is a dual die part that operates with up to 50V difference between the RS-232 side and the Logic side (ISOCOM to GND). This makes the device ideal for operation in noisy conditions with high common-mode voltages. This feature prevents damage to the device if RS-232 lines are inadvertently short-circuited to a +24V or 48V power bus.
The MAX3250 is powered by a single 3V to 5.5V supply on the Logic side. Power is transferred from the Logic side to the isolated side by 100V external capacitors.
The MAX3250 has two receivers (Rx) and two drivers (Tx) and is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. The transceivers have a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a 3V to 5.5V supply with a dual Charge Pump The device features a FAULT open-drain output to signal an excessive isolated-side voltage condition on any of the RS-232 inputs. This output CAN drive an alarm LED or CAN be monitored by the processor to prevent operation under these conditions. The receiver outputs are high impedance in shutdown, allowing multiple Interfaces (IrDA, RS-232 RS-485) to be connected to the same UART
The MAX3250 is available in a space-saving 28-pin SSOP package.
By Maxim Integrated Products
MAX3250 's PackagesMAX3250 's pdf datasheet
MAX3250CAI SSOP
MAX3250CAI-T SSOP
MAX3250CAIT SSOP
MAX3250EAI SSOP
MAX3250EAI-T SSOP
MAX3250EAIT SSOP




MAX3250 Pinout, Pinouts
MAX3250 pinout,Pin out
This is one package pinout of MAX3250,If you need more pinouts please download MAX3250's pdf datasheet.

MAX3250 Application circuits
MAX3250 circuits
This is one application circuit of MAX3250,If you need more circuits,please download MAX3250's pdf datasheet.


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