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MAX489 RS485/RS422 Transceivers Datasheet
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Product Details
The MAX489 is a Full Duplex transceiver for RS-485 and RS-422 bus communication. The MAX489 contains both a driver and receiver for the RS-485 bus together with a driver enable and receiver enable control input. The MAX489 has a reduced slew-rate to minimize EMI and to reduce reflections in long, improperly terminated cables, this allows for error-free data transmission up to 250kbps.
Features
- Low Quiescent Current
- Slew Rate Limited for Error-Free Data Transmission
- Three State Outputs
- Operates from a Single 5V Supply
- Up to 32 Transceivers on the Bus
- Current Limiting and Thermal Shutdown for Driver Overload Protection
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | NC - Not Connected |
| 2 | RO - Receiver Output |
| 3 | RE - Receiver Enable |
| 4 | DE - Driver Enable |
| 5 | DI - Driver Input |
| 6 | GND - Ground |
| 7 | GND - Ground |
| 8 | NC - Not Connected |
| 9 | Y - Non-Inverting Driver Output |
| 10 | Z - Inverting Driver Output |
| 11 | B - Inverting Receiver Input |
| 12 | A - Non-Inverting Receiver Input |
| 13 | NC - Not Connected |
| 14 | Vcc - +5V Power Supply |
Dimensional Drawing
Technical Data
