7 Mar
2002
7 Mar
'02
1:09 a.m.
Jochen Kunz wrote:
On Thu, Mar 07, 2002 at 02:13:44AM +0100, Andreas Freiherr wrote:
Still check the schematic and a datasheet , as you have less drive
on the LS chip and I think the 74123's and the 74LS123's handle
the clear line differently. On one the clear could trigger the one shot.
Also they have 74123's here for $1.28 http://www.rocelec.com/
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Good luck! Meanwhile, I'll try to get that
blown 74123 out of my RX211
Best method for replacing chips is to cut the pins of
the broken
part and then take out the single pins with a desoldering pump.
Works good even on multilayers with a good soldering iron.
I suspect replacing the 74123 with a 74LS123 will
change the timing? -
Depends on the purpose of the gate. If it is not used to
generate
timing it should be no problem to replace it with a LS type. (IMHO)