ZHCSP53G December 1982 – October 2021 SN54HC138 , SN74HC138
PRODUCTION DATA
请参考 PDF 数据表获取器件具体的封装图。
This device features three binary inputs to select a single active-low output. Three enable pins are also available to enable or disable the outputs. One active high enable and two active low enable pins are available, and any enable pin can be deactivated to force all outputs high. All three enable pins must be active for the output to be enabled.