| Distributor | SKU | Stock | Cost | |
|---|---|---|---|---|
| DigiKey | 2156-SN74LS640NSR-ND | 15365 | $2.27 | Buy |
| Mouser Electronics | 595-SN74LS640NSR | 707 | $2.33 | Buy |
| Quest Components | SN74LS640NSR | 1506 | $2.86 | Buy |
| Quarktwin Electronic Components | SN74LS640NSR | 11978 | $1.01 | Buy |
| Win Source | SN74LS640NSR | 4650 | $0.88 | Buy |
| Arrow North American Components | SN74LS640NSR | 0 | $1.56 | Buy |
| AVNET Express | SN74LS640NSR | 16000 | $1.06 | Buy |
| Texas Instruments | SN74LS640NSR | 12444 | $1.90 | Buy |
| Verical Marketplace | SN74LS640NSR | 15365 | $1.74 | Buy |
SN74LS640 Octal bus transceivers