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| Part Number | LT1039ACSW#PBF | LT1039CSW#PBF | LT1139ACSW#PBF | 
|---|---|---|---|
| Manufacturer | Analog Devices Inc. | Analog Devices Inc. | Analog Devices Inc. | 
| Product Status | Active | Active | Active | 
| Type | Transceiver | Transceiver | Transceiver | 
| Protocol | RS232 | RS232 | RS232 | 
| Number of Drivers/Receivers | 3/3 | 3/3 | 4/4 | 
| Duplex | Full | Full | Full | 
| Receiver Hysteresis | 400 mV | 400 mV | 400 mV | 
| Data Rate | - | - | 250KBd | 
| Voltage - Supply | 5V ~ 15V | 5V ~ 15V | 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 18-SOIC (0.295", 7.50mm Width) | 18-SOIC (0.295", 7.50mm Width) | 24-SOIC (0.295", 7.50mm Width) | 
| Supplier Device Package | 18-SO | 18-SO | 24-SOIC |