贴片直插HD74HC86P，HD74LS00B，HD74LS05P，HD74LS27P

贴片直插HD74LS07FPEL(P/B，HDL4F42GHQ303-00，8

原SN7406N M74LS139P HD74LS00P KA7500B

议价原原SN7406N M74LS139P HD74LS00P KA7500B