| PartNumber | 74ABT646CMTCX | 74ABT646CMSA | 74ABT646CMSAX |
| Description | Bus Transceivers Octal Trans and Reg | Bus Transceivers Octal Trans and Reg | Bus Transceivers Octal Trans and Reg |
| Manufacturer | ON Semiconductor | ON Semiconductor | ON Semiconductor |
| Product Category | Bus Transceivers | Bus Transceivers | Bus Transceivers |
| RoHS | Y | Y | Y |
| Logic Family | 74ABT | 74ABT | 74ABT |
| Input Level | TTL | TTL | TTL |
| Output Level | TTL | TTL | TTL |
| Output Type | 3-State | 3-State | 3-State |
| High Level Output Current | - 32 mA | - 32 mA | - 32 mA |
| Low Level Output Current | 64 mA | 64 mA | 64 mA |
| Propagation Delay Time | 5.6 ns | 5.6 ns | 5.6 ns |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 85 C |
| Package / Case | TSSOP-24 | SSOP-24 | SSOP-24 |
| Packaging | Reel | Tube | Reel |
| Function | Octal Trans and Reg | Transceiver/Register | Octal Trans and Reg |
| Height | 0.95 mm | 1.8 mm | 1.8 mm |
| Length | 7.8 mm | 8.4 mm | 8.4 mm |
| Number of Circuits | 8 | 8 | 8 |
| Product | BiCMOS | BiCMOS | BiCMOS |
| Technology | BiCMOS | BiCMOS | BiCMOS |
| Width | 4.4 mm | 5.3 mm | 5.3 mm |
| Brand | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild | ON Semiconductor / Fairchild |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Number of Channels | 8 | 8 | 8 |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | 4.5 V to 5.5 V |
| Polarity | Non-Inverting | Non-Inverting | Non-Inverting |
| Product Type | Bus Transceivers | Bus Transceivers | Bus Transceivers |
| Factory Pack Quantity | 2500 | 58 | 2000 |
| Subcategory | Logic ICs | Logic ICs | Logic ICs |
| Triggering Type | Positive Edge | Positive Edge | Positive Edge |
| Part # Aliases | 74ABT646CMTCX_NL | - | - |
| Unit Weight | 0.007478 oz | 0.059966 oz | 0.059966 oz |