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| PartNumber | SN74HCT257D | SN74HCT257DG4 | SN74HCT257DE4 |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers Tri-St. Quad Line | Encoders, Decoders, Multiplexers & Demultiplexers Quad 2Ln To 1Ln Data Selector Multiplexr | Encoders, Decoders, Multiplexers & Demultiplexers Quad 2-to-1 Data Slct/Mltpx W/3St Otp |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| RoHS | Y | Y | - |
| Product | Selectors / Multiplexers | Selectors / Multiplexers | - |
| Logic Family | HCT | HCT | - |
| Number of Bits | 4 bit | - | - |
| Number of Input Lines | 2 Input | 2 Input | - |
| Number of Output Lines | 1 Output | 1 Output | - |
| Propagation Delay Time | 38 ns | 38 ns | - |
| Supply Voltage Min | 4.5 V | 4.5 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 | SOP-16 | SOP-16 | - |
| Packaging | Tube | Tube | - |
| Function | Multiplexer | Multiplexer | - |
| Height | 1.58 mm | 1.58 mm | - |
| Length | 9.9 mm | 9.9 mm | - |
| Number of Circuits | Quad | - | - |
| Operating Temperature Range | - 40 C to + 85 C | - 40 C to + 85 C | - |
| Series | SN74HCT257 | SN74HCT257 | - |
| Technology | CMOS | CMOS | - |
| Width | 3.91 mm | 3.91 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Logic Type | Data Selectors/Multiplexers | CMOS | - |
| High Level Output Current | - 6 mA | - 6 mA | - |
| Low Level Output Current | 6 mA | 6 mA | - |
| Maximum Clock Frequency | 25 MHz | 25 MHz | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Pd Power Dissipation | 1500 mW | - | - |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | - |
| Factory Pack Quantity | 40 | 40 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.004998 oz | 0.004998 oz | - |