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| Part Number | FST3257QSCX | FSTU3257QSCX | FST3253QSCX | FST3257QSC |
|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | onsemi | onsemi | Fairchild Semiconductor |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Type | Multiplexer/Demultiplexer | Multiplexer/Demultiplexer | Multiplexer/Demultiplexer | Multiplexer/Demultiplexer |
| Circuit | 4 x 2:1 | 4 x 2:1 | 2 x 4:1 | 4 x 2:1 |
| Independent Circuits | 1 | 1 | 1 | 1 |
| Current - Output High, Low | - | - | - | - |
| Voltage Supply Source | Single Supply | Single Supply | Single Supply | Single Supply |
| Voltage - Supply | 3V ~ 5.5V | 4V ~ 5.5V | 4V ~ 5.5V | 3V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 16-LSSOP (0.154", 3.90mm Width) | 16-LSSOP (0.154", 3.90mm Width) | 16-LSSOP (0.154", 3.90mm Width) | 16-LSSOP (0.154", 3.90mm Width) |
| Supplier Device Package | 16-QSOP | 16-QSOP | 16-QSOP | 16-QSOP |
