以下是MB74LS249可替换型号:
- 74LS249DC
- 74LS249PC
- ECG74LS249
- HD74LS249
- HD74LS249P
- MB74LS249
- MB74LS249M
- MH746
- NTE74LS249
- SK74LS249
- SN74LS249
- SN74LS249J
- SN74LS249JD
- SN74LS249JDS
- SN74LS249JS
- SN74LS249N
- SN74LS249ND
- SN74LS249NDS
- SN74LS249NS
- TCG74LS249
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