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CF8223A Datasheet(PDF) 8 Page - Nippon Precision Circuits Inc

Part # CF8223A
Description  FSK Decoder and DTMF Receiver IC
PDF  15 Pages
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Manufacturer  NPC [Nippon Precision Circuits Inc]
Direct Link  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

CF8223A Datasheet(HTML) 8 Page - Nippon Precision Circuits Inc

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SM8223A
NIPPON PRECISION CIRCUITS—8
DTMF receive timing (1)
DTMF receive timing (2)
(FSK/DTMF) DOUT output timing
DTMF Data #1
#1
Tip/Ring
DOUT
OSCOUT
tRE
tAF
tBDD
DV
PDWN
FSK/DTMF
Data #1
tDPD
tDOSC
tPR
tRE
tPA
DTMF Data #2
Data #2
S3
S2
S1
Q0
DOUT
Stop bit
1
0
Q1
Q2
Q3
S0
Start bit
DTMF data
Checksum
(2'mod16)
tBDD
DV
tDWL
tDWH
tDf0
tDr0
DOUT
90%
10%



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