| PartNumber | 74ACT139MTC | 74ACT139SC | 74ACT139PC |
| Description | Encoders, Decoders, Multiplexers & Demultiplexers Dual 1-of-4 Dec/Dem | Encoders, Decoders, Multiplexers & Demultiplexers Dual 1-of-4 Dec/Dem | Encoders, Decoders, Multiplexers & Demultiplexers Dual 1-of-4 Dec/Dem |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers |
| RoHS | Y | Y | Y |
| Product | Decoders, Encoders, Multiplexers & Demultiplexers | Decoders, Encoders, Multiplexers & Demultiplexers | Decoders, Encoders, Multiplexers & Demultiplexers |
| Logic Family | 74ACT | 74ACT | 74ACT |
| Number of Input Lines | 1 Input | 1 Input | 1 Input |
| Number of Output Lines | 4 Output | 4 Output | 4 Output |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Mounting Style | SMD/SMT | SMD/SMT | Through Hole |
| Package / Case | TSSOP-16 | SOIC-16 | PDIP-16 |
| Packaging | Tube | Tube | Tube |
| Function | Decoder/Demultiplexers | Decoder/Demultiplexers | Decoder/Demultiplexers |
| Height | 0.9 mm | 1.5 mm | 3.42 mm |
| Input Voltage | - 0.5 V to + 0.5 V | - 0.5 V to + 0.5 V | - 0.5 V to + 0.5 V |
| Length | 5 mm | 10 mm | 19.68 mm |
| Number of Circuits | Dual | Dual | Dual |
| Output Current | + 20 mA | + 20 mA | + 20 mA |
| Output Voltage | - 0.5 V to + 0.5 V | - 0.5 V to + 0.5 V | - 0.5 V to + 0.5 V |
| Series | 74ACT139 | 74ACT139 | - |
| Technology | CMOS | CMOS | CMOS |
| Width | 4.4 mm | 4 mm | 6.6 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Logic Type | Decoders/Demultiplexers | Decoders/Demultiplexers | Decoders/Demultiplexers |
| Supply Current Max | 0.004 mA | 0.004 mA | 0.004 mA |
| High Level Output Current | - 24 mA | - 24 mA | - 24 mA |
| Low Level Output Current | 24 mA | 24 mA | 24 mA |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Product Type | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers | Encoders, Decoders, Multiplexers & Demultiplexers |
| Factory Pack Quantity | 96 | 48 | 25 |
| Subcategory | Logic ICs | Logic ICs | Logic ICs |
| Unit Weight | 0.006102 oz | 0.005044 oz | 0.057419 oz |