The Teensy 3.x are 3.3V devices, and according to the datasheet the minimum high output level is Vdd - 0.5 V = 2.8 V. I want to use the PulsePosition library to drive servos, and now I'm unsure about powering the shift register:
Using 5 V, the Teensy's minimum high output is too low to drive the shift register's input, which requires at least (a bit more than) 3.15 V to detect a high level.
Using 3.3 V, the 164's input will surely work correctly, but will the servos be able to interpret the 3.3 V-based logic levels?
Regards
Christoph
Using 5 V, the Teensy's minimum high output is too low to drive the shift register's input, which requires at least (a bit more than) 3.15 V to detect a high level.
Using 3.3 V, the 164's input will surely work correctly, but will the servos be able to interpret the 3.3 V-based logic levels?
Regards
Christoph