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MT8972B PDF预览

MT8972B

更新时间: 2024-02-04 03:18:45
品牌 Logo 应用领域
MITEL 网络接口
页数 文件大小 规格书
20页 393K
描述
ISO2-CMOS ST-BUS⑩ FAMILY Digital Subscriber Interface Circuit Digital Network Interface Circuit

MT8972B 技术参数

是否Rohs认证:不符合生命周期:Obsolete
零件包装代码:QFP包装说明:QCCJ, LDCC28,.5SQ
针数:28Reach Compliance Code:unknown
HTS代码:8542.39.00.01风险等级:5.81
Is Samacsys:N数据速率:160 Mbps
ISDN访问速率:BASICJESD-30 代码:S-PQCC-J28
JESD-609代码:e0长度:11.5062 mm
功能数量:1端子数量:28
最高工作温度:85 °C最低工作温度:-40 °C
最小输出高电压:2.4 V最大输出低电流:0.005 A
最大输出低电压:0.4 V封装主体材料:PLASTIC/EPOXY
封装代码:QCCJ封装等效代码:LDCC28,.5SQ
封装形状:SQUARE封装形式:FLATPACK, THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):NOT SPECIFIED电源:5 V
认证状态:Not Qualified参照点:S
座面最大高度:4.57 mm子类别:Digital Transmission Interfaces
最大压摆率:15 mA标称供电电压:5 V
表面贴装:YES技术:CMOS
电信集成电路类型:DIGITAL SLIC温度等级:INDUSTRIAL
端子面层:Tin/Lead (Sn/Pb)端子形式:J BEND
端子节距:1.27 mm端子位置:QUAD
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:11.5062 mm
Base Number Matches:1

MT8972B 数据手册

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ISO2-CMOS ST-BUS FAMILY MT8971B/72B  
Digital Subscriber Interface Circuit  
Digital Network Interface Circuit  
ISSUE 7  
May 1995  
Features  
Full duplex transmission over a single twisted  
pair  
Ordering Information  
MT8971BE  
22 Pin Plastic DIP  
22 Pin Plastic DIP  
22 Pin Ceramic DIP  
28 Pin PLCC  
Selectable 80 or 160 kbit/s line rate  
Adaptive echo cancellation  
MT8972BE  
MT8972BC  
MT8971BP  
MT8972BP  
Up to 3km (8971B) and 4 km (8972B)  
ISDN compatible (2B+D) data format  
Transparent modem capability  
Frame synchronization and clock extraction  
MITEL ST-BUS compatible  
28 Pin PLCC  
-40°C to +85°C  
Description  
The MT8971B (DSIC) and MT8972B (DNIC) are  
multi-function devices capable of providing high  
speed, full duplex digital transmission up to 160  
kbit/s over a twisted wire pair. They use adaptive  
echo-cancelling techniques and transfer data in  
(2B+D) format compatible to the ISDN basic rate.  
Several modes of operation allow an easy interface  
to digital telecommunication networks including use  
as a high speed limited distance modem with data  
Low power (typically 50 mW), single 5V supply  
Applications  
Digital subscriber lines  
rates up to 160 kbit/s.  
Both devices function  
High speed data transmission over twisted  
wires  
identically but with the DSIC having a shorter  
maximum loop reach specification. The generic  
"DNIC" will be used to reference both devices unless  
otherwise noted.  
Digital PABX line cards and telephone sets  
80 or 160 kbit/s single chip modem  
2
The MT8971B/72B is fabricated in Mitel’s ISO -  
CMOS process.  
DSTi/Di  
LOUT  
Differentially  
Encoded Biphase  
Transmitter  
Transmit  
Filter &  
Line Driver  
Transmit  
Interface  
Prescrambler  
Scrambler  
CDSTi/  
CDi  
LOUT  
DIS  
VBias  
Transmit  
Control  
Address  
Echo Canceller  
Error  
Signal  
Timing  
Register  
F0/CLD  
MUX  
Master Clock  
Phase Locked  
Precan  
C4/TCK  
F0o/RCK  
MS0  
Echo Estimate  
Transmit/  
Clock  
Receive  
Timing &  
Control  
+
-1  
Receive  
Filter  
DPLL  
MS1  
+2  
LIN  
MS2  
Sync Detect  
Receive  
RegC  
Status  
OSC2  
OSC1  
DSTo/Do  
Differentially  
Encoded Biphase  
Receiver  
De-  
Prescrambler  
Receive  
Interface  
Descrambler  
CDSTo/  
CDo  
VDD  
VSS VBias VRef  
Figure 1 - Functional Block Diagram  
9-107  

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