Other Parts Discussed in Thread: SN74AXC8T245, TXB0108, SN74AVC16T245
Tool/software:
Hi there,
We bought 2 SN74AXC8T245 Evaluation Modules, but unfortunately the channel 1 of the 8 channels does not work for both EVMs.
We set DIR1 and DIR2 both to low, which means the level shift is from B to A, but channel 1 doesn't work (when pulling high or low in the B side, we didn't see the high or low on the A side), but all other 7 channels does work.
BTW, we put both VCCA and VCCB to 3.3V as we mainly target to enhance the driving force of our original GPIOs.
One side question, from the info of SN74AXC8T245 datasheet, it seems the output driving force is max. 12mA, strong enough to directly drive a LED. the question is if we don't put a resistor cascaded with the LED from the A side GPIO, or say directly driving a LED with GPIO on A side, will that cause any potential issues for SN74AXC8T245? Thanks a lot!
BR,
Owen