전자부품 반도체 검색엔진( 무료 PDF 다운로드 ) - 데이터시트뱅크
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IN9270N 데이터 시트보기 (PDF) - Integral Corp.
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IN9270N
DTMF RECEIVER
Integral Corp.
IN9270N Datasheet PDF : 12 Pages
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IN9270
( )
V
CC
t
GTA
= (RC) ln
V
TST
(
t
GTA
= (RC) ln
)
V
CC
V
CC
- V
TST
Figure 2. Basic Steering Circuit
F
LOW
F
HIGH
KEY
OE
Q4
Q3
Q2
Q1
697 1209
1
H
0
0
0
1
697 1336
2
H
0
0
1
0
697 1477
3
H
0
0
1
1
770 1209
4
H
0
1
0
0
770 1336
5
H
0
1
0
1
770 1477
6
H
0
1
1
0
852 1209
7
H
0
1
1
1
852 1336
8
H
1
0
0
0
852 1477
9
H
1
0
0
1
941 1336
0
H
1
0
1
0
941 1209
*
H
1
0
1
1
941 1477
#
H
1
1
0
0
697 1633
A
H
1
1
0
1
770 1633
B
H
1
1
1
0
852 1633
C
H
1
1
1
1
941 1633
D
H
0
0
0
0
ANY
L
Z
Z
Z
Z
“L = Logic Low, H = Logic High, Z = High Impedance”
Figure 3. Logic Table
6
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