16-Key Encoder 20-Key Encoder

General Description The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pull-up devices which permit switches

文件：114.68 Kbytes 页数：10 Pages

FAIRCHILD

仙童半导体

16-Key Encoder ??20-Key Encoder

General Description The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pull-up devices which permit switches

文件：131.89 Kbytes 页数：11 Pages

FAIRCHILD

仙童半导体

16-Key Encoder 20-Key Encoder

General Description The MM74C922 and MM74C923 CMOS key encoders provide all the necessary logic to fully encode an array of SPST switches. The keyboard scan can be implemented by either an external clock or external capacitor. These encoders also have on-chip pull-up devices which permit switches

文件：131.89 Kbytes 页数：11 Pages

FAIRCHILD

仙童半导体

IC ENCODER 20-KEY 20-DIP

ONSEMI

安森美半导体

Package：20-DIP（0.300"，7.62mm）；包装：管件 类别：集成电路（IC） 信号开关，多路复用器，解码器 描述：IC ENCODER 20-KEY 1 X 9:4 20DIP

ONSEMI

安森美半导体