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| Part Number | SN75ALS191PS | SN75ALS191PSR | SN75ALS191PS |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Series | - | - | - |
| Package/Case | 8-SOIC (0.209", 5.30mm Width) | 8-SOIC (0.209", 5.30mm Width) | 8-SOIC (0.209", 5.30mm Width) |
| Packaging | Bulk | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active | Obsolete |
| Type | Driver | Driver | Driver |
| Protocol | RS422 | RS422, RS485 | RS422 |
| Number of Drivers/Receivers | 2/0 | 2/0 | 2/0 |
| Duplex | - | - | - |
| Receiver Hysteresis | - | - | - |
| Data Rate | 20MBaud | - | 20MBaud |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C | 0°C ~ 70°C (TA) |
| Grade | - | - | - |
| Qualification | - | - | - |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Supplier Device Package | 8-SO | 8-SO | 8-SO |
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