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Número de pieza
componentes Descripción
HT9170D(1999) Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT9170D
(Rev.:1999)
DTMF Receiver
Holtek Semiconductor
HT9170D Datasheet PDF : 0 Pages
Block Diagram
X2
3 .5 8 M H z
X1
C ry s ta l
O s c illa to r
PW DN
VREF
B ia s
C ir c u it
V re f
G e n e ra to r
VP
O PA
VN
GS
P r e - F ilte r
L o w G ro u p
F ilte r
H ig h G r o u p
F ilte r
HT9170
R T /G T E S T
DV
DVB
S te e r in g C o n tr o l C ir c u it
D0
L a tc h
F re q u e n c y
C ode
&
D1
D e te c to r
D e te c to r
O u tp u t
B u ffe r
D2
D3
IN H
OE
Pin Assignment
VP
VN
GS
VREF
IN H
PW DN
X1
X2
VSS
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
H T9170B
1 8 D IP
VDD
R T /G T
EST
DV
D3
D2
D1
D0
OE
VP
VN
GS
VREF
IN H
PW DN
X1
X2
VSS
1
18
2
17
3
16
4
15
5
14
6
13
7
12
8
11
9
10
H T9170D
18 S O P
VDD
R T /G T
EST
DV
D3
D2
D1
D0
OE
2
December 20, 1999
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