DS21FT44

更新时间： 2024-10-28 03:37:59

品牌	Logo	应用领域
达拉斯 - DALLAS		/
页数	文件大小	规格书
110页	678K
描述
4x3 Twelve Channel E1 Framer, 4x4 Sixteen Channel E1 Framer

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DS21FT44 数据手册

DS21FT44/DS21FF44

4x3 Twelve Channel E1 Framer

4x4 Sixteen Channel E1 Framer

www.dalsemi.com

FEATURES

S Sixteen (16) or twelve (12) completely

independent E1 Framers in one small 27mm

x 27mm Package

S DS21FF44 and DS21FT44 are pin

compatible with DS21FF42 and DS21FT42,

respectively to allow the same footprint to

support T1 and E1 applications

S Each Multi-Chip Module (MCM) contains

either four (FF) or three (FT) DS21Q44 die

S 300–pin MCM BGA 1.27 mm pitch package

(27mm X 27mm)

S Each quad framer can be concatenated into a

single 8.192MHz Backplane Data Stream

S Low power 3.3V CMOS with 5V tolerant

input & outputs

S IEEE 1149.1 JTAG-Boundary Scan

Architecture

1. MULTI-CHIP MODULE (MCM) DESCRIPTION

The Four x Four and Four x Three MCMs offer a high density packaging arrangement for the DS21Q44

E1 Enhanced Quad Framer. Either three (DS21FT44) or four (DS21FF44) 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 DS21Q44 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.

1 of 110

120601

12 3 4 5 6 7...110

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与DS21FT44相关器件

型号	品牌	获取价格	描述	数据表
DS21FT44+	MAXIM	获取价格	Framer, CMOS, PBGA300, 27 X 27 MM, 1.27 MM PITCH, MCMBGA-300
DS21FT44N	DALLAS	获取价格	Framer, CMOS, PBGA300, 27 X 27 MM, BGA-300
DS21FT44N+	MAXIM	获取价格	Framer, CMOS, PBGA300, 27 X 27 MM, 1.27 MM PITCH, MCMBGA-300
DS21Q348	DALLAS	获取价格	3.3V E1/T1/J1 Line Interface
DS21Q348	ROCHESTER	获取价格	DATACOM, PCM TRANSCEIVER, PBGA144, 17 X 17 MM, CSBGA-144
DS21Q348DK	ETC	获取价格	3.3V E1/T1/J1 Line Interface Design Kit
DS21Q348N	DALLAS	获取价格	3.3V E1/T1/J1 Line Interface
DS21Q348N	MAXIM	获取价格	PCM Transceiver, 1-Func, PBGA144, 17 X 17 MM, CSBGA-144
DS21Q348NB	MAXIM	获取价格	PCM Transceiver, 1-Func, PBGA144, 17 X 17 MM, CSBGA-144
DS21Q348-W	MAXIM	获取价格	PCM Transceiver, 1-Func, PBGA144, 17 X 17 MM, CSBGA-144