> sn74ls04jd (motorola inc) ls series, hex 1-input invert gate
> sn74ls78ajs (motorola inc) ls series, negative edge triggered
图1 sn74ls161引脚图各引脚功能如下:cr为复位;cp为时钟输入;a,b,c,d
sn74ls123j_引脚图_电路图(2/10)_ti - 万联芯城
sn74ls247ne4 引脚图
> sn74ls04jd (motorola inc) ls series, hex 1-input invert gate
> sn74ls78ajs (motorola inc) ls series, negative edge triggered
图1 sn74ls161引脚图各引脚功能如下:cr为复位;cp为时钟输入;a,b,c,d
sn74ls123j_引脚图_电路图(2/10)_ti - 万联芯城
sn74ls247ne4 引脚图