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EM91440B Ver la hoja de datos (PDF) - ELAN Microelectronics
Número de pieza
componentes Descripción
Fabricante
EM91440B
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
ELAN Microelectronics
EM91440B Datasheet PDF : 24 Pages
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EM91440 SERIES
TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE
AND DUAL-TONE MELODY GENERATOR
TIMING DIAGRAM
HKS
KEY IN
KT
XMUTE
HDO
SDO
PO
DTMF
OSC.
2
3
Tdb
Tkt
Tm
Tidp
T T TT
Tidp
b m bm
Tdly
Figure 1. Pulse mode operating timing
Hi-impedance
HKS
KEY IN
KT
XMUTE
HDO
SDO
PO
DTMF
OSC.
2
3
Tdb
Td
Titp
Figure 2. DTMF mode operating timing
* This specification are subject to be changed without notice.
Titp
Hi-impedance
10.1.1997
14
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