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| PartNumber | SN74ALS640BNSR | SN74ALS640BNSRG4 | SN74ALS640BNS |
| Description | Bus Transceivers OCTAL BUS TRANSCEIVER | Bus Transceivers OCTAL BUS TRANSCEIVER | Bus XCVR Single 8-CH 3-ST 20-Pin SOP Tube |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Bus Transceivers | Bus Transceivers | - |
| RoHS | Y | Y | - |
| Logic Family | ALS | ALS | - |
| Input Level | TTL | TTL | - |
| Output Level | TTL | TTL | - |
| Output Type | 3-State | 3-State | - |
| High Level Output Current | - 15 mA | - 15 mA | - |
| Low Level Output Current | 24 mA | 24 mA | - |
| Propagation Delay Time | 11 ns | 11 ns | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Supply Voltage Min | 4.5 V | 4.5 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Package / Case | SO-20 | SO-20 | - |
| Packaging | Reel | Reel | - |
| Function | Bus Transceiver | Bus Transceiver | - |
| Height | 1.95 mm | 1.95 mm | - |
| Length | 12.6 mm | 12.6 mm | - |
| Number of Circuits | 8 | 1 | - |
| Operating Temperature Range | 0 C to + 70 C | 0 C to + 70 C | - |
| Product | Standard Transceiver | Standard Transceiver | - |
| Series | SN74ALS640B | SN74ALS640B | - |
| Technology | Bipolar | Bipolar | - |
| Width | 5.3 mm | 5.3 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Number of Channels | 8 | 8 | - |
| Operating Supply Voltage | 4.5 V to 5.5 V | 4.5 V to 5.5 V | - |
| Polarity | Inverting | Inverting | - |
| Product Type | Bus Transceivers | Bus Transceivers | - |
| Factory Pack Quantity | 2000 | 2000 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.009408 oz | 0.009408 oz | - |