74HC164、74HCT164 是高速硅门 CMOS 器件，与低功耗肖特基型 TTL (LSTTL) 器件的引脚兼容。74HC164、74HCT164 是 8 位边沿触发式移位寄存器-74HC164, 74HCT164 is a high-speed silicon gate CMOS devices, the devices are pin compatible with low power Schottky TTL (LSTTL). 74HC164, 74HCT164 are 8-bit