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| PartNumber | SN74ALS640BNE4 | SN74ALS640BNS | SN74ALS640BN |
| Description | Bus Transceivers OCTAL BUS TRANSCEIVER | Bus XCVR Single 8-CH 3-ST 20-Pin SOP Tube | Bus Transceivers OCTAL BUS TRANSCEIVER |
| Manufacturer | - | - | Texas Instruments |
| Product Category | - | - | IC Chips |
| Series | - | - | 74ALS |
| Product | - | - | Standard Transceiver |
| Packaging | - | - | Tube |
| Unit Weight | - | - | 0.042297 oz |
| Mounting Style | - | - | Through Hole |
| Package Case | - | - | PDIP-20 |
| Operating Temperature | - | - | 0°C ~ 70°C |
| Mounting Type | - | - | Through Hole |
| Output Type | - | - | 3-State |
| Function | - | - | Bus Transceiver |
| Number of Channels | - | - | 8 |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 20-PDIP |
| Number of Circuits | - | - | 8 |
| Number of Elements | - | - | 1 |
| Current Output High Low | - | - | 15mA, 24mA |
| Logic Type | - | - | Transceiver, Inverting |
| Number of Bits per Element | - | - | 8 |
| Maximum Operating Temperature | - | - | + 70 C |
| Minimum Operating Temperature | - | - | 0 C |
| Polarity | - | - | Inverting |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 4.5 V |
| Logic Family | - | - | ALS |
| Propagation Delay Time | - | - | 11 ns |
| Output Level | - | - | TTL |
| Input Level | - | - | TTL |
| High Level Output Current | - | - | - 15 mA |
| Low Level Output Current | - | - | 24 mA |