參數(shù)資料
型號(hào)： DS21FT42
元件分類： 通信及網(wǎng)絡(luò)
英文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述： Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù)： 1/145頁
文件大?。?/td> 466K
代理商： DS21FT42
DALLAS
SEMICONDUCTOR
DS21FT42 / DS21FF42
4 X 3 Twelve Channel T1 Framer
4 X 4 Sixteen Channel T1 Framer
101899
/1231
FEATURES
P
Sixteen (16) or Twelve (12) Completely
Independent T1 Framers in One Small
27mm x 27mm Package
Each Multi-Chip Module (MCM) Contains
Four (FF) or Three (FT) DS21Q42 Die.
Each Quad Framer Can be Concatenated
into a Single 8.192MHz Backplane Data
Stream
IEEE 1149.1 JTAG-Boundary Scan
Architecture
DS21FF42 and DS21FT42 are Pin
Compatible with DS21FF44 and
DS21FT44, respectively, to allow the
Same Footprint to Support T1 and E1
Applications
300–pin MCM BGA package (27mm X
27mm)
Low Power 3.3V CMOS with 5V Tolerant
Input & Outputs
1. MULTI-CHIP MODULE (MCM) DESCRIPTION
The Four x Four and Four x Three MCMs offer a high density packaging arrangement for
the DS21Q42 T1 Enhanced Quad Framer. Either three (DS21FT42) or four (DS21FF42)
silicon die of these devices is packaged in a Multi-Chip Module (MCM) with the electrical
connections as shown in Figure 1-1.
All of the functions available on the DS21Q42 are also available in the MCM packaged
version. However, in order to minimize package size, some signals have been deleted or
combined. These differences are detailed in Table 1-1. In the Four x Three (FT) version,
the fourth quad framer is not populated and hence all of the signals to and from this fourth
framer are absent and should be treated as No Connects (NC). Table 2-1 lists all of the
signals on the MCM and it also lists the absent signals for the Four x Three.
The availability of both a twelve and a sixteen channel version allow the maximum framer
density with the lowest cost. For example, in a T3 application, two devices (one
DS21FF42 and one DS21FT42) provide a total of 28 framers without the additional cost
and power consumption of any unused framers that appear in an octal approach.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS21FT42N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl T1/T1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4X3 E1 Framer E1 Framer E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21FT44N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 4x4 16/4x3 12 Chnl E1/E1 Framer RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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