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參數資料
| 型號： | MT8880 |
| 廠商： | Mitel Networks Corporation |
| 英文描述： | ISO2-CMOS Integrated DTMFTransceiver |
| 中文描述： | ISO2 - CMOS集成DTMFTransceiver |
| 文件頁數： | 1/18頁 |
| 文件大小： | 312K |
| 代理商： | MT8880 |
4-33
MT8880C/MT8880C-1
Integrated DTMFTransceiver
Features
Complete DTMF transmitter/receiver
Central office quality
Low power consumption
Microprocessor port
Adjustable guard time
Automatic tone burst mode
Call progress mode
Applications
Credit card systems
Paging systems
Repeater systems/mobile radio
Interconnect dialers
Personal computers
Description
The MT8880C/C-1 is a monolithic DTMF transceiver
with call progress filter. It is fabricated in Mitel’s
ISO
2
-CMOS technology, which provides low power
dissipation and high reliability. The DTMF receiver is
based
monolithic DTMF receiver; the 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
microprocessor bus is provided and is directly
compatible with 6800 series microprocessors. The
MT8880C-1 is functionally identical to the MT8880C
except for the performance of the receiver section,
which is enhanced to accept and reject lower signal
levels.
upon
the
industry
standard
MT8870
tones.
A
standard
Ordering Information
MT8880CE/CE-1
MT8880CC/CC-1
MT8880CS/CS-1
MT8880CN/CN-1
MT8880CP/CP-1
-40°C to +85°C
20 Pin Plastic DIP
20 Pin Ceramic DIP
20 Pin SOIC
24 Pin SSOP
28 Pin Plastic LCC
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
Φ
2
CS
R/W
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 2
May 1995
ISO
2
-CMOS
相關PDF資料 |
PDF描述 |
|---|---|
| MT8880CP | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CS | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CC-1 | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CN-1 | ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CP-1 | ISO2-CMOS Integrated DTMFTransceiver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MT8880C | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CC | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CC/CC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:Integrated DTMFTransceiver |
| MT8880CC-1 | 制造商:MITEL 制造商全稱:Mitel Networks Corporation 功能描述:ISO2-CMOS Integrated DTMFTransceiver |
| MT8880CE | 制造商:Microsemi Corporation 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:Zarlink Semiconductor Inc 功能描述:DTMF TXRX 3.58MHZ CMOS 5V 20PDIP - Rail/Tube 制造商:Zarlink Semiconductor 功能描述:Bulk |
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