The next in a series of chips that are useful for level translation between 3.3V and 5V (and the other way) systems. This one consists of 8 tristate output buffers in a 20 pin package. The enables are anded together so both must be low to enable the outputs. As with the 74x125, various flavors of this will translate: the 74ahc541 running with VCC at 3.3V will accept 5V inputs and convert them to 3.3V. The 74ahct541 or 74hct541 with VCC at 5V will accept greater than 2.4V as a high level and will thus translate 3.3V outputs to 5V.
74x541.fzpz (11.1 KB)