关注微信公众号查券更方便
SN74LS244DBR SN74LS245DB SN74LS541DBR SN74LS240DBR SSOP20
全新原装 SN74LS541DB SN74LS541DBR 丝印LS541 SSOP-20 逻辑IC
新SN74LS06DB MC14429P-A P374HC74DT SN74BCT541 R
