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參數(shù)資料
| 型號： | MT8889C |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | Integrated DTMF Transceiver with Adaptive Micro Interface(雙音多頻信號（DTMF）收發(fā)器（帶自適應(yīng)微接口）) |
| 中文描述： | 集成雙音多頻收發(fā)器自適應(yīng)微型接口（雙音多頻信號（DTMF）的收發(fā)器（帶自適應(yīng)微接口）） |
| 文件頁數(shù)： | 1/23頁 |
| 文件大小： | 199K |
| 代理商： | MT8889C |
4-105
Features
Central office quality DTMF transmitter/
receiver
Low power consumption
High speed adaptive micro interface
Adjustable guard time
Automatic tone burst mode
Call progress tone detection to -30dBm
Applications
Credit card systems
Paging systems
Repeater systems/mobile radio
Interconnect dialers
Personal computers
Description
The MT8889C is a monolithic DTMF transceiver with
call progress filter. It is fabricated in CMOS
technology offering low power consumption and high
reliability.
The receiver section is based upon the industry
standard
MT8870
DTMF
transmitter utilizes a switched capacitor D/A
converter for low distortion, high accuracy DTMF
signalling. Internal counters provide a burst mode
such that tone bursts can be transmitted with precise
timing. A call progress filter can be selected allowing
a microprocessor to analyze call progress tones.
receiver
while
the
The MT8889C utilizes an adaptive micro interface,
which allows the device to be connected to a number
of popular microcontrollers with minimal external
logic.
Ordering Information
MT8889CE
MT8889CS
MT8889CN
-40
°
C to +85
°
C
20 Pin Plastic DIP
20 Pin SOIC
24 Pin SSOP
Figure 1 - Functional Block Diagram
TONE
IN+
IN-
GS
OSC1
OSC2
V
DD
V
Ref
V
SS
ESt
St/GT
D0
D1
D2
D3
IRQ/CP
DS/RD
CS
R/W/WR
RS0
∑
D/A
Converters
Row and
Column
Counters
Transmit Data
Register
Data
Bus
Buffer
Tone Burst
Gating Cct.
+
-
Oscillator
Circuit
Bias
Circuit
Control
Logic
Digital
Algorithm
and Code
Converter
Control
Logic
Steering
Logic
Status
Register
Control
Register
A
Control
Register
B
Receive Data
Register
Interrupt
Logic
I/O
Control
Low Group
Filter
High Group
Filter
Dial
Tone
Filter
ISSUE 6
March 1997
MT8889C
Integrated DTMF Transceiver
with Adaptive Micro Interface
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MT88E39 | Calling Number Identification Circuit(主叫識別電路（提供各種主叫線信息傳遞設(shè)備的接口）) |
| MT88E41 | Extended Voltage Calling Number Identification Circuit (ECNIC)(擴展電壓主叫識別電路（提供各種主叫線信息傳遞設(shè)備的接口）) |
| MT88E43A | () |
| MT88E45 | 4-Wire Calling Number Identification Circuit(4線主叫識別電路（接收傳送的物理層信號）) |
| MT88E46 | Bellcore Compliant Calling Number Identification Circuit(兼容貝爾內(nèi)核主叫識別電路) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MT8889CC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver with Adaptive Micro Interface |
| MT8889CC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver with Adaptive Micro Interface |
| MT8889CE | 制造商:Microsemi Corporation 功能描述: |
| MT8889CE1 | 制造商:Microsemi Corporation 功能描述: 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:MICROSEMI CONSUMER MEDICAL PRODUCT GROUP 功能描述:IC TXRX DTMF 20PDIP 制造商:Microsemi Corporation 功能描述:IC TXRX DTMF 20PDIP |
| MT8889CE-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver with Adaptive Micro Interface |
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