贴片直插SN74LS193M，SN74LS175D，SN74LS173A，SN74LS174N，4

贴片直插SN74LS174M，SN74LS166M，SN74LS164N，SN74LS165A，4

CD74ACT174M96 CD74AC139M SN74LS259BD AM26LS32AIDR

SN74LS174D CD74HC173M SN74F157AD SN74HC158D SN74HC158DT

SN74LS174N 全新集成电路 HD74LS174P M74LS174P DIP-16 进口原装