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| Part Number | UC3903DW | UC2903DW | 
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | 
| Product Status | Obsolete | Obsolete | 
| Type | Multi-Voltage Supervisor | Multi-Voltage Supervisor | 
| Number of Voltages Monitored | 4 | 4 | 
| Voltage - Threshold | Adjustable/Selectable | Adjustable/Selectable | 
| Output | Open Drain or Open Collector | Open Drain or Open Collector | 
| Reset | Active Low | Active Low | 
| Reset Timeout | Adjustable/Selectable | Adjustable/Selectable | 
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 18-SOIC (0.295", 7.50mm Width) | 18-SOIC (0.295", 7.50mm Width) | 
| Supplier Device Package | 18-SOIC | 18-SOIC |