DTR-4.5
IC BLOCK DIAGRAMS AND DESCRIPTIONS
TC9164AF(Function switch)
2
3
4
5
6
7
8
9
10
10
11
11
12
12
13
13
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
14
14
1
VSS
GND
VDD
S1
S2
COM1
S3
S4
S5
S6
COM2
S7
COM3
ST
DATA
CK
LEVEL SHIFT
LA
TCH CIRCUIT
SHIFT REGISTER
LA
TCH CIRCUIT
S8
1
14
28
2,3,4,6,7,8,10,11
27,26,25,23,22,21,19,18
5,9,12
24,20,17
13
15
16
Symbol
GND
VDD
S1~S8
S1~S8
COM1 ~ COM3
COM1 ~ COM3
ST
C K
DAT A
Pin No.
Function
Negative power supply
Ground
Positive power supply
Input/output terminals
Input/output terminals
Common terminals
Common terminals
Strobe input terminal for data reading
Clock input terminal for data transfer
Data input terminal for switch
Vss
LEVEL SHIFT
S1
S2
S4
S3
COM1
S5
S6
COM2
S7
COM3
S8
