M74HCU04TTR M74HCU04M1R M74HCU04B1R M74HCT86M1R M74HCT86B1R
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M74HC74TTR M74HC86B1R M74HC86RM13TR M74HCT00RM13TR原装
M74HC86B1R M74HCT04B1R M74HCT08B1R M74HCT132B1R原装
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