| PartNumber | SN74LS645-1DWG4 | SN74LS645-1DW | SN74LS645-1DWR |
| Description | Bus Transceivers Octal bus transceivr | Bus Transceivers Octal bus Transceiver | Bus Transceivers Octal bus Transceiver |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Category | Bus Transceivers | Bus Transceivers | Bus Transceivers |
| RoHS | Y | Y | Y |
| Logic Family | LS | LS | LS |
| Input Level | TTL | TTL | TTL |
| Output Level | TTL | TTL | TTL |
| Output Type | 3-State/Open Collector | 3-State/Open Collector | 3-State/Open Collector |
| High Level Output Current | - 15 mA | - 15 mA | - 15 mA |
| Low Level Output Current | 24 mA | 24 mA | 24 mA |
| Propagation Delay Time | 15 ns | 15 ns | 15 ns |
| Supply Voltage Max | 5.25 V | 5.25 V | 5.25 V |
| Supply Voltage Min | 4.75 V | 4.75 V | 4.75 V |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Package / Case | SOIC-20 | SOIC-20 | SOIC-20 |
| Packaging | Tube | Tube | Reel |
| Function | Bus Transceiver | Bus Transceiver | Bus Transceiver |
| Height | 2.35 mm | 2.35 mm | 2.35 mm |
| Length | 12.8 mm | 12.8 mm | 12.8 mm |
| Number of Circuits | 1 | 8 | 8 |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | 0 C to + 70 C |
| Product | Standard Transceiver | Standard Transceiver | Standard Transceiver |
| Series | SN74LS645 | SN74LS645 | SN74LS645 |
| Technology | Bipolar | Bipolar | Bipolar |
| Width | 7.52 mm | 7.52 mm | 7.52 mm |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Number of Channels | 8 | 8 | 8 |
| Operating Supply Voltage | 5 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Polarity | Non-Inverting | Non-Inverting | Non-Inverting |
| Product Type | Bus Transceivers | Bus Transceivers | Bus Transceivers |
| Factory Pack Quantity | 25 | 25 | 2000 |
| Subcategory | Logic ICs | Logic ICs | Logic ICs |
| Unit Weight | 0.017662 oz | 0.017662 oz | 0.017662 oz |