Service Manual

IC23/24 74VHC04
IC 74VHC04 SOP 300MIL
Parts No. : 314-0632
II Top View & Pin Layout
IC25
IC S-80741AL-AS CHIP
Parts No. : 313-5322
II Top View
Top View
2 3
IC26/27/29/30 74LS245
IC 74LS245 SOP 300MIL
Parts No. : 314-0563
II Top View & Pin Layout
1 OUT
2 VDD
3 vss
1Y 2
2Y 4
3Y 6
4Y 8
SY 10
6Y 12
r----------------------------------,
I __________________________________ J
II Function Table
-60-
Enable
!Direction
G
Control
DIR
L L
L
H
H
X
H : High level
L: Low level
X: "H" or "L"Ievel
Operation
B data to A bus
A data to B bus
Isolation
OUT