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PDF TP5088 Data sheet ( Hoja de datos )
| Número de pieza | TP5088 | |
| Descripción | TP5088 DTMF Generator for Binary Data | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TP5088 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
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October 1991
TP5088 DTMF Generator for Binary Data
General Description
This CMOS device provides low cost tone-dialing capability
in microprocessor-controlled telephone applications 4-bit
binary data is decoded directly without the need for conver-
sion to simulated keyboard inputs required by standard
DTMF generators With the TONE ENABLE input low the
oscillator is inhibited and the device is in a low power idle
mode On the low-to-high transition of TONE ENABLE data
is latched into the device and the selected tone pair from
the standard DTMF frequencies is generated An open-drain
N-channel transistor provides a MUTE output during tone
generation
Features
Y Direct microprocessor interface
Y Binary data inputs with latches
Y Generates 16 standard tone pairs
Y On-chip 3 579545 MHz crystal-controlled oscillator
Y Better than 0 64% frequency accuracy
Y High group pre-emphasis
Y Low harmonic distortion
Y MUTE output interfaces to speech network
Y Low power idle mode
Y 3 5V – 8V operation
Block Diagram
Crystal Specification Parallel Resonant 3 579545 MHz RS s 150X L e 100 mH C0 e 5 pF C1 e 0 02 pF
TL H 5004 – 1
C1995 National Semiconductor Corporation TL H 5004
RRD-B30M115 Printed in U S A
1 page  
Physical Dimensions inches (millimeters)
Order Number TP5088WM
NS Package Number M14B
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet TP5088.PDF ] | |
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