haxan New Member May 29, 2010 #1 Hi, I have two 8bit inputs coming and i want to select only one of them to go forward using only one selection pin. Can anyone suggest a solution.
Hi, I have two 8bit inputs coming and i want to select only one of them to go forward using only one selection pin. Can anyone suggest a solution.
E edeca Active Member May 29, 2010 #3 What sort of inputs? You could use parallel in, serial out shift registers like this one from NXP Semiconductors if you need to save pins. What exactly are you trying to do? Last edited: May 29, 2010
What sort of inputs? You could use parallel in, serial out shift registers like this one from NXP Semiconductors if you need to save pins. What exactly are you trying to do?
haxan New Member May 29, 2010 #4 I have two 8bit inputs coming and i want to select either of them to go forward using one selection pin. 8bit input >> Selection >> 8 bit output 8bit input
I have two 8bit inputs coming and i want to select either of them to go forward using one selection pin. 8bit input >> Selection >> 8 bit output 8bit input
Brevor Member May 29, 2010 #5 You could use 2 74HC240 Ic's Thats what first comes to my mind. But maybe someone knows of another way.
You could use 2 74HC240 Ic's Thats what first comes to my mind. But maybe someone knows of another way.
haxan New Member May 30, 2010 #6 Thank you Brevor, that is what i was thinking too. If there is a high logic on one pin, and there is high impedance on the other, if we connect the two, what will be the output logic ? Last edited: May 30, 2010
Thank you Brevor, that is what i was thinking too. If there is a high logic on one pin, and there is high impedance on the other, if we connect the two, what will be the output logic ?