The 74HC237 is a 3-to-8 line decoder, demultiplexer with latches at the three address inputs (An). The 74HC237 essentially combines the 3-to-8 decoder function with a 3-bit storage latch. When the ...
The 74LV138 is a three-to-eight line decoder/demultiplexer ideal for low voltage and memory chip select decoding applications. This device features wide operating voltage, demultiplexing capability, ...
This pcb allows connecting across a phone line tip and ring and when DTMF signals are present, they are decoded into 4 bit data with a data ready signal. An Arduino can then detect DTMF touch tones ...
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