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參數(shù)資料
| 型號(hào)： | M-8870-02T |
| 廠商： | CLARE INC |
| 元件分類： | 信令電路 |
| 英文描述： | DTMF Receiver |
| 中文描述： | TELECOM, DTMF SIGNALING CIRCUIT, PDSO18 |
| 封裝： | PLASTIC, SOIC-18 |
| 文件頁數(shù)： | 7/9頁 |
| 文件大?。?/td> | 301K |
| 代理商： | M-8870-02T |
M-8870
www.clare.com
7
Rev. 3
Timing Diagram
Explanation of Events
(A) Tone bursts detected, tone duration invalid, outputs not updated.
(B) Tone #n detected, tone duration valid, tone decoded and latched in outputs.
(C) End of tone #n detected, tone absent duration valid, outputs remain latched until next valid tone.
(D) Outputs switched to high impedance state.
(E) Tone #n + 1 detected, tone duration valid, tone decoded and latched in outputs (currently high impedance).
(F) Acceptable dropout of tone #n + 1, tone absent duration invalid, outputs remain latched.
(G) End of tone #n + 1 detected, tone absent duration valid, outputs remain latched until next valid tone.
Explanation of Symbols
VIN
ESt
St/GT
Q1 - Q4
StD
DTMF composite input signal.
Early steering output. Indicates detection of valid tone frequencies.
Steering input/guard time output. Drives external RC timing circuit.
4-bit decoded tone output.
Delayed steering output. Indicates that valid frequencies have been present/
absent for the required guardtime, thus constituting a valid signal.
Output enable (input). A low level shifts Q1 - Q4 to its high impedance state.
Maximum DTMF signal duration not detected as valid.
Minimum DTMF signal duration required for valid recognition.
Minimum time between valid DTMF signals.
Maximum allowable dropout during valid DTMF signal.
Time to detect the presence of valid DTMF signals.
Time to detect the absence of valid DTMF signals.
Guard time, tone present.
Guard time, tone absent.
OE
t
REC
t
REC
t
ID
t
DO
t
DP
t
DA
T
GTP
T
GTA
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| M-980-02P | 190840005 |
| M-980-02S | 3V/5V General Purpose Call Progress Tone Detector |
| M-980-02T | 3V/5V General Purpose Call Progress Tone Detector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M-8880 | 制造商:CLARE 制造商全稱:Clare, Inc. 功能描述:M-8880 DTMF Transceiver |
| M-8880-01P | 功能描述:IC TRANSCEIVER DTMF CMOS 20-DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| M-8880-01SM | 功能描述:IC TRANSCEIVER DTMF CMOS 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| M-8880-01T | 功能描述:IC TRANSCEIVER DTMF CMOS 20-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 電信 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS 產(chǎn)品變化通告:Product Discontinuation 06/Feb/2012 標(biāo)準(zhǔn)包裝:750 系列:* |
| M-8888 | 制造商:CLARE 制造商全稱:Clare, Inc. 功能描述:DTMF Transceiver |
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