| PartNumber | SN74HC251DRG4 | SN74HC251DRE4 | SN74HC251DR |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers Data Selectors Multiplexers | Encoders, Decoders, Multiplexers & Demultiplexers Data w/3-State Out Selector/Multiplexe | Encoders, Decoders, Multiplexers & Demultiplexers Data w/3-State Out Selector/Multiplexe |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Logic - Signal Switches, Multiplexers, Decoders | IC Chips |
| RoHS | Y | - | - |
| Product | Selectors / Multiplexers | - | - |
| Logic Family | HC | - | - |
| Number of Input Lines | 8 Input | - | - |
| Number of Output Lines | 1 Output | - | - |
| Propagation Delay Time | 51 ns | - | - |
| Supply Voltage Min | 2 V | - | - |
| Supply Voltage Max | 6 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - |
| Maximum Operating Temperature | + 85 C | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | SOP-16 | - | - |
| Packaging | Reel | Tape & Reel (TR) Alternate Packaging | Digi-ReelR Alternate Packaging |
| Function | Multiplexer | - | - |
| Height | 1.58 mm | - | - |
| Length | 9.9 mm | - | - |
| Operating Temperature Range | - 40 C to + 85 C | - | - |
| Series | SN74HC251 | 74HC | 74HC |
| Technology | CMOS | - | - |
| Width | 3.91 mm | - | - |
| Brand | Texas Instruments | - | - |
| Logic Type | CMOS | - | - |
| High Level Output Current | - 7.8 mA | - | - |
| Low Level Output Current | 7.8 mA | - | - |
| Maximum Clock Frequency | 28 MHz | - | - |
| Operating Supply Voltage | 2 V to 6 V | - | - |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | - | - |
| Factory Pack Quantity | 2500 | - | - |
| Subcategory | Logic ICs | - | - |
| Unit Weight | 0.004998 oz | - | - |
| Type | - | Multiplexer | Multiplexer |
| Package Case | - | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | - | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | - | Surface Mount | Surface Mount |
| Voltage Supply | - | 2 V ~ 6 V | 2 V ~ 6 V |
| Supplier Device Package | - | 16-SOIC | 16-SOIC |
| Voltage Supply Source | - | Single Supply | Single Supply |
| Circuit | - | 1 x 8:1 | 1 x 8:1 |
| Current Output High Low | - | 7.8mA, 7.8mA | 7.8mA, 7.8mA |
| Independent Circuits | - | 1 | 1 |