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

FairchildFairchild Semiconductor

仙童半导体飞兆/仙童半导体公司

Package：20-SOIC（0.295"，7.50mm 宽）；包装：卷带（TR） 类别：集成电路（IC） 信号开关，多路复用器，解码器 描述：IC ENCODER 16-KEY 1 X 8:4 20SOIC

ONSEMI

安森美半导体

16, 20-Key Encoder

General Description These 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 pullup devices which permit switches with up to 50 kXon

文件：218.37 Kbytes 页数：10 Pages

NSCNational Semiconductor (TI)

美国国家半导体美国国家半导体公司

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

FairchildFairchild Semiconductor

仙童半导体飞兆/仙童半导体公司

Keyboard / Keypad Encoder for up to 16 switches

文件：122.82 Kbytes 页数：5 Pages

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