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| Part Number | ST491ACN | ST490ACN |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Product Status | Obsolete | Obsolete |
| Type | Transceiver | Transceiver |
| Protocol | RS422, RS485 | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 | 1/1 |
| Duplex | Full | Full |
| Receiver Hysteresis | 70 mV | 70 mV |
| Data Rate | 50Mbps | 50Mbps |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | 14-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) |
| Supplier Device Package | 14-DIP | 8-DIP |
