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MT8977AC PDF预览

MT8977AC

更新时间: 2024-01-08 13:47:48
品牌 Logo 应用领域
MITEL 电信集成电路
页数 文件大小 规格书
26页 347K
描述
ISO-CMOS ST-BUS⑩ FAMILY T1/ESF Framer Circuit

MT8977AC 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:LPCC
包装说明:QCCJ,针数:44
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.25JESD-30 代码:S-PQCC-J44
JESD-609代码:e0长度:16.585 mm
湿度敏感等级:1功能数量:1
端子数量:44最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:PLASTIC/EPOXY
封装代码:QCCJ封装形状:SQUARE
封装形式:CHIP CARRIER峰值回流温度(摄氏度):225
认证状态:Not Qualified座面最大高度:4.57 mm
标称供电电压:5 V表面贴装:YES
技术:CMOS电信集成电路类型:FRAMER
温度等级:INDUSTRIAL端子面层:TIN LEAD
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:30
宽度:16.585 mm

MT8977AC 数据手册

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ISO-CMOS ST-BUS FAMILY MT8977  
T1/ESF Framer Circuit (ACCUNET T1.5)  
Preliminary Information  
ISSUE 2  
May 1995  
Features  
D3/D4 or ESF framing and SLC-96 compatible  
Ordering Information  
Two frame elastic buffer with jitter tolerance  
improved to 156 UI  
MT8977AC  
MT8977AE  
MT8977AP  
28 Pin Ceramic DIP  
28 Pin Plastic DIP  
44 Pin PLCC  
Insertion and detection of A, B, C, D bits,  
signalling freeze, optional debounce  
-40°C to 85°C  
Selectable B8ZS, jammed bit (ZCS) or no zero  
code suppression  
Yellow alarm and blue alarm signal capabilities  
Description  
Bipolar violation count, FT error count, CRC  
error count  
The MT8977 is a variant of the MT8976 framer,  
which has been enhanced to meet ACCUNET T1.5  
wander tolerance (138 UI).  
Selectable robbed bit signalling  
®
Frame and superframe sync. signals, Tx and Rx  
AMI encoding and decoding  
Per channel, overall, and remote loop around  
The MT8977 meets ESF and D3/D4 formats, and is  
compatible with SLC-96 systems.  
Digital phase detector between T1 line and ST-  
BUS  
One uncommitted scan point and drive point  
Pin compatible with MT8976 and MT8979  
ST-BUS compatible  
Applications  
DS1/ESF digital trunk interfaces  
Computer to PBX interfaces (DMI and CPI)  
High speed computer to computer data links  
C1.5i  
TxSF  
RxFDLClk  
RxFDL  
ST-BUS  
Timing  
Circuitry  
C2i  
2 Frame  
Elastic Buffer  
with Slip  
F0i  
RxA  
RxSF  
Control  
Remote &  
Digital  
Loopbacks  
RxB  
TxA  
DS1  
Link  
Interface  
DSTo  
DSTi  
Data  
Interface  
TxB  
TxFDLClk  
TxFDL  
2048-1544  
Converter  
RxD  
CSTi0  
CSTi1  
CSTo  
Serial  
Control  
Interface  
E1.5i  
ABCD  
Signalling RAM  
E8Ko  
VSS  
DS1  
Counter  
Phase  
Detector  
XCtl  
XSt  
Control Logic  
VDD  
Figure 1 - Functional Block Diagram  
ACCUNET® T1.5 is a registered trademark of AT & T  
4-99  

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