以下是MB74LS640可替换型号:
- ECG74LS640
- M74LS640-1P
- MB74LS640
- MB74LS640M
- N74LS640-1F
- N74LS640-1N
- N74LS640F
- N74LS640N
- NTE74LS640
- SN74LS640
- SN74LS640J
- SN74LS640JD
- SN74LS640JDS
- SN74LS640JS
- SN74LS640N
- SN74LS640ND
- SN74LS640NDS
- SN74LS640NS
- TCG74LS640
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