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Marking of electronic components, SMD Codes ALS540, ALS540**. SN74ALS540NSR, SN74ALS540-1NSR, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| SN74ALS540NSR | ALS540 | SOP-20 | |
| SN74ALS540-1NSR | ALS5401 | SOP-20 |