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相关型号
SN74HCT139N SN74HCT139N . SN74HCT139NE4 SN74HCT139PW SN74HCT139PWR SN74HCT139PWRE4 SN74HCT139PWRG4 SN74HCT139PWT SN74HCT139PWTE4 SN74HCT139PWTG4