1 元券SN74HC594DR74HC594DHC594SOP¥1.30去看看笔记本ic发布了SN74HC594DR 74HC594D HC594 SOP-161 元券SN74HC594DR74HC594DHC594SOP¥1.50去看看鸿顺电子电脑芯片发布了SN74HC594DR 74HC594D HC594 SOP-16