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74SN595164
SN74AC164MSN74AC157DSN74AC240NSN74AC241N
SN74CL257SN74C164NSN74CS00NSN74CS32J
原装HC逻辑全新
139138126157
SN74HC00N138132164
SN74HC00NHC74138
14245595573
SN74HC00N132138164
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