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參數(shù)資料
| 型號(hào)： | TP5088WM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 無(wú)繩電話/電話 |
| 英文描述： | CONNECTOR ACCESSORY |
| 中文描述： | TELEPHONE DIALER CKT, PDSO14 |
| 封裝： | 0.300 INCH, PLASTIC, SO-14 |
| 文件頁(yè)數(shù)： | 1/6頁(yè) |
| 文件大小： | 132K |
| 代理商： | TP5088WM |
TL/H/5004
T
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
TL/H/5004–1
*
Crystal Specification: Parallel Resonant 3.579545 MHz, R
S
s
150
X
, L
e
100 mH, C
0
e
5 pF, C
1
e
0.02 pF.
C
1995 National Semiconductor Corporation
RRD-B30M115/Printed in U. S. A.
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| TP5089 | CONNECTOR ACCESSORY |
| TP5089N | CONNECTOR ACCESSORY |
| TP5228 | CLASS AB STEREO HEADPHONE DRIVER WITH MUTE |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TP5089 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TP5089 DTMF (TOUCH-TONE) Generator |
| TP5089N | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:TP5089 DTMF (TOUCH-TONE) Generator |
| TP5089N/A+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone Telephone Dialer |
| TP5089N/B+ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone Telephone Dialer |
| TP5089WM | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Tone Telephone Dialer |
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