Lpc2000

Hi Olimex/Others

I have an Olimex ARM JTAG. It works ok on my homemade board if Vcc is
3.3 V. But if Vcc is 3.1 V is does not work.

I have look at the JTAG.
The board contain a 74AC244 (5V driver - power from PC)
The board contain a 74LCX244 (3.xV driver - power from target)

Signals from Target through 74LCX244 OK, but from 74LCX244 to 74AC244,
do not work 3.x volt to 5 volt system.

I think the 74AC244 should be replaced by a 74ACT244 ???

What is your opinion ?


Best regards
John Noergaard