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| PartNumber | FST3257MTC | FST3257M | FST3257MT |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers Multi/Demulti Bus Sw | Encoders, Decoders, Multiplexers & Demultiplexers Multi/Demulti Bus Sw | |
| Manufacturer | ON Semiconductor | ON Semiconductor | - |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| RoHS | Y | Y | - |
| Product | Multiplexers | Multiplexers | - |
| Logic Family | FST | FST | - |
| Number of Input Lines | 8 Input | 8 Input | - |
| Number of Output Lines | 4 Output | 4 Output | - |
| Propagation Delay Time | 0.25 ns at 4 V to 5.5 V | 0.25 ns at 4 V to 5.5 V | - |
| Supply Voltage Min | 4 V | 4 V | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Package / Case | TSSOP-16 | SOIC-16 | - |
| Packaging | Tube | Tube | - |
| Function | Multiplexer/Demultiplexer Bus Switch | Multiplexer/Demultiplexer Bus Switch | - |
| Height | 0.9 mm | 1.5 mm | - |
| Length | 5 mm | 10 mm | - |
| Series | FST3257 | - | - |
| Technology | CMOS | CMOS | - |
| Width | 4.4 mm | 4 mm | - |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | - |
| Logic Type | CMOS | CMOS | - |
| Low Level Output Current | 128 mA | 128 mA | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| Factory Pack Quantity | 94 | 48 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.006102 oz | 0.008536 oz | - |
| Part # Aliases | - | FST3257M_NL | - |