TX-SR800
IC BLOCK DIAGRAMS AND DESCRIPTIONS
1
2
3
4
5
6
7
8
4
6
COM
7
5
INH
V
EE
GND
16
15
14
13
12
11
10
9
Vcc
2
1
0
3
A
B
C
74HC4051AF(8-channel analog multiplexer/demultiplexer)
CONTROL INPUTS
INHIBIT
L
L
L
L
L
L
L
L
H
C
L
L
L
L
H
H
H
H
X
B
L
L
H
H
L
L
H
H
X
A
L
H
L
H
L
K
L
H
X
"ON"
0
1
2
3
4
5
6
7
NONE
OUTPUT
1A
1Y
2A
2Y
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
6A
6Y
5A
5Y
4A
4Y
(TOP VIEW)
A
L
H
Y
H
L
Truth table
74HCU04F(Hex Inverters)
Truth table
1A
1Y
2A
2Y
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
6A
6Y
5A
5Y
4A
4Y
(TOP VIEW)
A
L
H
Y
L
H
Truth table
TC74HCT7007AF(Hex buffer)
TC74VHC4040FT(12-stage ripple-carry binary counter)
1
2
3
4
5
6
7
8
Q12
Q6
Q5
Q7
Q4
Q3
Q2
GND
16
15
14
13
12
11
10
9
Vcc
Q11
Q10
Q8
Q9
CLR
CK
Q1
CK
X
CLR
H
L
L
OUTPUT
All "L"
No change
Next condition
X: Don't care
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
(9)
(7)
(6)
(5)
(3)
(2)
(4)
(13)
(12)
(14)
(15)
(1)
RCTR 12
0
11
CT=0
+CT
CLR
CK
(11)
(10)
