While i read alot about the popular 74HC595 shift register and its use for multiplexing i can't find anything about the following chips:
Triple 2−Channel Analog Multiplexer/Demultiplexer
Octal D-type flip-flop
The above chips should also be suitable for multiplexing / handling more outputs with less pins, right? I'm not an electronical engineer.. so my knowledge about those ancient chips is limited.
Anyway i'm curious what was the main purpose of this chips and why noone is using them anymore with microcontrollers.
Said that, i have 2x MC14052B & 1x 74HC574. Those parts where taken out from an old sat reciever. And i assume they where there to drive , at least one of them, a 4 digtit 7 segment display. This brings me also to ask if somehow i could use them to drive that display again with an arduino using LESS pins.
Note.: i also have some of the following i2c chips with 8 ports. As i already have a 16x2 display driven by a pcf8574, the combination of the above chips with this one would allow me to drive the diplay with i2c.
PCF8574 ch 8bit 8-bit I/O expander for I 2C-bus
While this appers to be 2 questions, it's just one. If you explain me the use of those chips i'm prolly able to use or not the chips with the 7seg display.At the other side if you explain me how i could hook up the chips with a microcontroller i would understand the usefullness of those chips.
I love IC's, i really want to find something to do with them before throwing them away. I hope you understand me and can help me to undertstand.