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Maxim Integrated
MAX250 Isolated RS232 Transceivers Datasheet
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Product Details
The MAX250 is an electrically isolated dual RS-232 transmitter/receiver. With the addition of a few components, a complete 19.2k baud transceiver can be constructed. The MAX250 operates from a single +5V power supply and includes a low power shutdown mode. The chip also includes a push-pull driver for the external isolation transformer.
Features
- Isolated Data Interface
- Single +5V Supply
- Uses Low Cost Optocouplers
- 5µW Low Power Shutdown
- 2 Transmitters and 2 Receivers
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | SHDN - Shutdown |
| 2 | D1 - Open Drain Driver MOSFET |
| 3 | T1LDR - Transmitter 1 Driver |
| 4 | T1IN - Transmitter 1 Input |
| 5 | T2IN - Transmitter 2 Input |
| 6 | T2LDR - Transmitter 2 Driver |
| 7 | GND - Ground |
| 8 | EN - Output Enable |
| 9 | R1OUT - Receiver 1 Output |
| 10 | R1DIN - Receiver 1 Input |
| 11 | R2DIN - Receiver 2 Input |
| 12 | R2OUT - Receiver 2 Output |
| 13 | D2 - Open Drain Driver MOSFET |
| 14 | Vcc - +5V Positive Supply Voltage |
Dimensional Drawing
Technical Data
