User Guide

64
Q402, Q403 : SN7438NSR
(TOP VIEW) LOGIC DIAGRAM
FUNCTION TABLE (each gate)
Q404 : SN74LV541APW
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
OE1
A1
A2
A3
A4
A5
A6
A7
A8
GND
V
CC
OE2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
(TOP VIEW)
OE1
OE2
To Seven Other Channels
A1
Y1
1
19
218
LOGIC DIAGRAM (POSITIVE LOGIC)
FUNCTION TABLE
(each buffer/driver)
INPUTS
OUTPUT
OE1 OE2 A
OUTPUT
Y
L L L L
L LH H
H XX Z
X H X Z