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