SOUTHERN AVIONICS COMPANY
Model SA100 Dual
2-24
Theory of Operation, Radiobeacon
Figure 2-14. Coder Shift Register Schematic
CODE TRAIN OUTPUT 5V
LOAD / SHIFT 5V CLOCK 5V CODE TRAIN EXT 5V
+12V
CODE TRAIN OUTPUT
CLOCK
LOAD / SHIFT
+5V
GND
CODE TRAIN EXT
+5V
+12V
+5V
+12V
+12V
+5V
+5V
+5V
+5V
+5V
+5V
+5V
NOTES 1. THIS DRAWING NO. SEP09701 REV. E. 2. TITLE: CODER SHIFT REGISTER PCB SCHEMATIC. 3. ASSEMBLY DWG. NO. SAP09701. 4. ALL RESISTORS 1/4W, 5%, UNLESS NOTED. 5. ALL CAPACITORS IN uF, UNLESS NOTED.
R10 100K
R10 100K
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U6 9S902001
U6 9S902001
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U13
1U741651
U13
1U741651
+12V
1
+5V
3
VSS
2
U19
1U780500
U19
1U780500
TP2 +5V
TP2 +5V
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U16
1U741651
U16
1U741651
1
2 3 4 5 6 7 8
U10 220K
U10 220K
R7 220K
R7 220K
1
2 3 4 5 6 7 8
U9 220K
U9 220K
1
2 3 4 5 6 7 8
U7 220K
U7 220K
R9
100K
R9
100K
C13 0.1
C13 0.1
R13 10K
R13 10K
C5 0.1
C5 0.1
R11 100K
R11 100K
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U5 9S902001
U5 9S902001
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U18
1U741651
U18
1U741651
R14 10K
R14 10K
C12 0.1
C12 0.1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
P1
GOLD FINGERS (22X)
P1
GOLD FINGERS (22X)
C7 1.0
C7 1.0
C3 1.0
C3 1.0
R1 100K
R1 100K
C9 0.1
C9 0.1
R5 220K
R5 220K
R4 220K
R4 220K
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U15
1U741651
U15
1U741651
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U1 9S902001
U1 9S902001
C4 0.1
C4 0.1
TP3
CODE TRAIN OUT
TP3
CODE TRAIN OUT
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U4 9S902001
U4 9S902001
C6 0.1
C6 0.1
R2 220K
R2 220K
1
2 3 4 5 6 7 8
U11 220K
U11 220K
AI
3
BI
5
CI
7
DI
9
EI
11
FI
14
MODE
13
AO
2
BO
4
CO
6
DO
10
EO
12
FO
15
VDD
16
VCC
1
VSS
8
U21 1U450400
U21 1U450400
C11 0.1
C11 0.1
TP4
LOAD SHIFT
TP4
LOAD SHIFT
+
C1 6.8 35V
+
C1 6.8 35V
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U17
1U741651
U17
1U741651
R8 100K
R8 100K
R3 220K
R3 220K
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U3 9S902001
U3 9S902001
TP1 GND
TP1 GND
1
2 3 4 5 6 7 8
U12 220K
U12 220K
1
2 3 4 5 6 7 8
U8 220K
U8 220K
AI
3
BI
5
CI
7
DI
9
EI
11
FI
14
MODE
13
AO
2
BO
4
CO
6
DO
10
EO
12
FO
15
VDD
16
VCC
1
VSS
8
U20 1U450400
U20 1U450400
C8 0.1
C8 0.1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
U2 9S902001
U2 9S902001
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
VCC
16
GND
8
U14
1U741651
U14
1U741651
R15 100K
R15 100K
R12 10K
R12 10K
R6 220K
R6 220K
C10 0.1
C10 0.1
TP5
8 PBS CLK
TP5
8 PBS CLK
C2
0.001
C2
0.001
Summary of Contents for SA100
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