![background image](http://html1.mh-extra.com/html/onkyo/ht-r667/ht-r667_service-manual_1636981062.webp)
TX-SR606
IC BLOCK DIAGRAMS AND TERMINAL DESCRIPTIONS-31
Q8002, Q8003
: TC74VCX162244FT
(Low-Voltage 16-Bit Bus Buffer with 3.6-V Tolerant Inputs and Outputs)
TRUTH TABLE
SYSTEM DIAGRAM
PIN LAYOUT
IEC LOGIC SYMBOL
2OE
1A1
1A2
GND
1A3
2A1
VCC
2A1
2A2
GND
2A3
2A4
3A1
3A2
GND
3A3
3A4
VCC
4A1
4A2
GND
4A3
4A4
3OE
1OE
1Y1
1Y2
GND
1Y3
1Y4
VCC
2Y1
2Y2
GND
2Y3
2Y4
3Y1
3Y2
GND
3Y3
3Y4
VCC
4Y1
4Y2
GND
4Y3
4Y4
4OE
TOP VIEW
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
48
1
24
25
47
44
46
2OE
1OE
4OE
3OE
1A1
1A3
1A2
41
43
38
40
36
37
33
35
2A1
1A4
2A3
2A2
3A1
2A4
3A3
3A2
30
32
27
29
26
4A1
3A4
4A3
4A2
4A4
2
5
8
11
1Y1
1Y3
2Y1
2Y3
3
6
9
1Y2
1Y4
2Y2
14
17
20
23
3Y2
3Y4
4Y2
4Y4
13
16
19
22
3Y1
3Y3
4Y1
4Y3
EN2
EN1
EN3
EN4
1 2
1 3
1 4
12
2Y4
1 1
X :
Don’t care
Z :
High impedance
1OE
2A1-2A4
3A1-3A4
4A1-4A4
1/4
2OE
3OE
4OE
2Y1-2Y4
3Y1-3Y4
4Y1-4Y4
Outputs
Inputs
1OE
L
L
H
1A1-1A4
L
H
X
1Y1-1Y4
L
H
Z
Outputs
Inputs
2Y1-2Y4
L
H
Z
Outputs
3Y1-3Y4
L
H
Z
Outputs
Inputs
4OE
L
L
H
4A1-4A4
L
H
X
4Y1-4Y4
L
H
Z
1A1-1A1
1Y1-1Y4
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299