I need to select 4 chips with a low latch enable.
I am using a Pic 18f14k22 and I don't have enough outputs to select all 4 chips with individual pins.
On had I have a 74LS155 which would do the job but I would be working at it's supply voltage limits of 4.5V. My supply will be 3 AAA cells in series for 4.5V.
Can someone recommend a decoder that would work?
Since I have an mcu, can this be down some other way? Perhaps borrow from the idea of Charlieplexing and create my own decoder with some diodes?
I am using a Pic 18f14k22 and I don't have enough outputs to select all 4 chips with individual pins.
On had I have a 74LS155 which would do the job but I would be working at it's supply voltage limits of 4.5V. My supply will be 3 AAA cells in series for 4.5V.
Can someone recommend a decoder that would work?
Since I have an mcu, can this be down some other way? Perhaps borrow from the idea of Charlieplexing and create my own decoder with some diodes?