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Maxim Integrated
MAX1480 RS485/RS422 Data Interface Datasheet
Photograph
Features
- Isolated Data Interface, Typically to 1600VRMS(1 minute)
- Slew-Rate Limited for Errorless Data Transmission
- Full-Duplex Data Communication
- -7V to +12V Common-Mode Input Voltage Range with Respect to Isolated Ground
- Single +5V Supply
- Current Limiting and Thermal Shutdown for Driver Overload Protection
Pin Layout
Pin Description
| Pin Number | Description |
|---|---|
| 1 | VCC1 - Logic-Side(non-isolated side) +5V Supply Voltages |
| 2 | VCC2 - Logic-Side(non-isolated side) +5V Supply Voltages |
| 3 | D1 - Internal Connections |
| 4 | D2 - Internal Connections |
| 5 | GND1 - Logic-Side Ground |
| 6 | FS - Frequency Select Input |
| 7 | SD - Shutdown Input |
| 8 | VCC3 - Logic-Side(non-isolated side) +5V Supply Voltages |
| 9 | DI - Driver Input |
| 10 | VCC4 - Logic-Side(non-isolated side) +5V Supply Voltages |
| 11 | DE - Driver-Enable Input |
| 12 | GND2 - Logic-Side Ground |
| 13 | RO - Receiver Output |
| 14 | VCC5 - Logic-Side(non-isolated side) +5V Supply Voltage |
| 15 | ISO RO LED - Isolated Receiver Output LED |
| 16 | ISO COM2 - Isolated Common |
| 17 | ISO DE DRV - Isolated Driver-Enable Drive |
| 18 | ISO Vcc2 - Isolated Supply Voltage |
| 19 | ISO DI DRV - Isolated Driver-Input Drive |
| 20 | ISO COM1 - Isolated Common |
| 21 | ISO DE IN - Isolated Driver-Enable Input |
| 22 | ISO DI IN - Isolated Driver Input |
| 23 | A - Noninverting Driver Output and Noninverting Receiver Input |
| 24 | ISO RO DRV - Isolated Receiver-Output Drive |
| 25 | B - Inverting Driver Output and Inverting Receiver Input |
| 26 | ISO Vcc1 - Isolated Supply Voltage Source |
| 27 | AC2 - Internal Connections |
| 28 | AC1 - Internal Connections |
Dimensional Drawing
Technical Data
