Details
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| Parameter | Symbol | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Supply Voltage | VCC | Operating | 4.75 | 5 | 5.25 | V |
| Output Current (Source) | IOUT | Per Output, VO = 0V to VCC - 1.5V | - | 10 | - | mA |
| Output Current (Sink) | IOUT | Per Output, VO = 0V to VCC - 1.5V | - | 10 | - | mA |
| Input Voltage Range | VI | Differential | -7 | - | 12 | V |
| Common-Mode Input Voltage | VCM | Differential | -7 | - | 12 | V |
| Data Rate | fD | RS-485/RS-422 | 0 | - | 2.5 | Mbps |
| Propagation Delay | tpd | A to Y, B to Z | - | 350 | - | ns |
| Skew | tskew | A to Y, B to Z | - | 50 | - | ns |
| Receiver Input Impedance | RIN | Differential | 12 | - | 16 | kΩ |
| Operating Temperature | TA | Commercial | 0 | - | 70 | °C |
| Storage Temperature | TSTG | - | -40 | - | 125 | °C |
Instructions for Using the MAX488CSA
Power Supply:
- Ensure the supply voltage (VCC) is within the range of 4.75V to 5.25V.
- Connect VCC to the power supply and GND to ground.
Data Lines:
- Connect the differential data lines (A and B) to the corresponding pins on the MAX488CSA.
- For RS-485 communication, connect the A and B lines to the appropriate transceiver or bus.
- For RS-422 communication, use separate A/B pairs for each direction.
Receiver Inputs:
- Connect the receiver inputs (Y and Z) to the microcontroller or other logic circuitry.
- The receiver input impedance is between 12kΩ and 16kΩ, which helps in matching the characteristic impedance of the transmission line.
Driver Outputs:
- Connect the driver outputs (RO) to the microcontroller or other logic circuitry.
- Ensure the output current does not exceed 10mA to avoid damage.
Data Rate:
- The MAX488CSA supports data rates up to 2.5Mbps. Ensure the data rate is within this limit to maintain reliable communication.
Temperature Considerations:
- Operate the device within the commercial temperature range of 0°C to 70°C.
- Store the device within the storage temperature range of -40°C to 125°C.
Propagation Delay and Skew:
- The propagation delay from the transmitter to the receiver is typically 350ns.
- The skew between the differential signals is typically 50ns. Ensure these parameters are accounted for in your system design.
Input Voltage Range:
- The input voltage range for differential signals is -7V to 12V. Ensure the input signals do not exceed these limits to prevent damage.
Common-Mode Input Voltage:
- The common-mode input voltage range is also -7V to 12V. This ensures compatibility with a wide range of signal levels.
By following these instructions, you can ensure reliable operation of the MAX488CSA in your RS-485/RS-422 communication systems.
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