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| Part Number | UC3903N | UC3904N | UC3903Q | UC2903N | UC3903J |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Unitrode | Unitrode | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active | Active | Obsolete | Obsolete |
| Type | Multi-Voltage Supervisor | Multi-Voltage Supervisor | Multi-Voltage Supervisor | Multi-Voltage Supervisor | Multi-Voltage Supervisor |
| Number of Voltages Monitored | 4 | 4 | 4 | 4 | 4 |
| Voltage - Threshold | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable |
| Output | Open Drain or Open Collector | Push-Pull, Totem Pole | Open Drain or Open Collector | Open Drain or Open Collector | Open Drain or Open Collector |
| Reset | Active Low | Active High | Active Low | Active Low | Active Low |
| Reset Timeout | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable | Adjustable/Selectable |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole | Surface Mount | Through Hole | Through Hole |
| Package / Case | 18-DIP (0.300", 7.62mm) | 18-DIP (0.300", 7.62mm) | 20-LCC (J-Lead) | 18-DIP (0.300", 7.62mm) | 18-CDIP (0.300", 7.62mm) |
| Supplier Device Package | 18-PDIP | 18-PDIP | 20-PLCC (8.96x8.96) | 18-PDIP | 18-CDIP |
