| PartNumber | SN74ABT657ANSRE4 | SN74ABT657ANSR | SN74ABT657ANSRG4 |
| Description | Bus Transceivers Octal Transceiver | Bus Transceivers Octal Transceiver | Bus Transceivers Octal Transceivers |
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| 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 | 4.2 ns | 4.2 ns | 4.6 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 | SO-24 | SO-24 | SOP-24 |
| Packaging | Reel | Reel | Reel |
| Function | Bus Transceiver with Parity Checker | Bus Transceiver with Parity Checker | Bus Transceiver with Parity Checker |
| Height | 1.95 mm | 1.95 mm | 1.95 mm |
| Length | 15 mm | 15 mm | 15 mm |
| Number of Circuits | 8 | 8 | 1 |
| Product | BiCMOS | BiCMOS | BiCMOS |
| Technology | BiCMOS | BiCMOS | BiCMOS |
| Width | 5.3 mm | 5.3 mm | 5.3 mm |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Number of Channels | 8 | 8 | 8 |
| Supply Current Max | 40 mA | 40 mA | 40 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 |
| Polarity | Non-Inverting | Non-Inverting | Non-Inverting |
| Product Type | Bus Transceivers | Bus Transceivers | Bus Transceivers |
| Factory Pack Quantity | 1 | 1 | 1 |
| Subcategory | Logic ICs | Logic ICs | Logic ICs |
| Unit Weight | 0.010857 oz | 0.010857 oz | 0.038731 oz |