Datasheet > DS21Q44TN+

DS21Q44TN+

更新时间： 2024-10-28 14:41:51

品牌	Logo	应用领域
美信 - MAXIM		电信电信集成电路
页数	文件大小	规格书
105页	702K
描述
Framer, CMOS, PQFP128, ROHS COMPLIANT, TQFP-128

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技术参数
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DS21Q44TN+ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	QFP	包装说明：	ROHS COMPLIANT, TQFP-128
针数：	128	Reach Compliance Code：	compliant
HTS代码：	8542.39.00.01	风险等级：	5.69
JESD-30 代码：	R-PQFP-G128	长度：	20 mm
功能数量：	1	端子数量：	128
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：	LFQFP
封装形状：	RECTANGULAR	封装形式：	FLATPACK, LOW PROFILE, FINE PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	1.6 mm	标称供电电压：	3.3 V
表面贴装：	YES	技术：	CMOS
电信集成电路类型：	FRAMER	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.5 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	14 mm	Base Number Matches：	1

DS21Q44TN+ 数据手册

DS21Q44

Enhanced Quad E1 Framer

www.maxim-ic.com

FEATURES

FUNCTIONAL DIAGRAM

CꢀFour E1 (CEPT or PCM-30)/ISDN-PRI

framing transceivers

Elastic

Store

Receive

Framer

CꢀAll four framers are fully independent;

transmit and receive sections of each framer

are fully independent

Elastic

Store

Transmit

Formatter

CꢀFrames to FAS, CAS, CCS, and CRC4 formats

CꢀEach of the four framers contain dual two-

frame elastic store slip buffers that can

connect to asynchronous backplanes up to

8.192MHz

FRAMER #0

FRAMER #1

FRAMER #2

FRAMER #3

Control Port

Cꢀ8-bit parallel control port that can be used

directly on either multiplexed or

nonmultiplexed buses (Intel or Motorola)

CꢀEasy access to Si and Sa bits

CꢀExtracts and inserts CAS signaling

CꢀLarge counters for bipolar and code

violations, CRC4 code word errors, FAS

word errors, and E-bits

ACTUAL SIZE

QUAD

FRAMER

CꢀProgrammable output clocks for Fractional

E1, per channel loopback, H0 and H12

applications

ORDERING INFORMATION

CꢀIntegral HDLC controller with 64-byte buffers

configurable for Sa bits or DS0 operation

CꢀDetects and generates AIS, remote alarm,

and remote multiframe alarms

DS21Q44T

0°C to +70°C

-40°C to +85°C

DS21Q44TN

CꢀPin compatible with DS21Q42 enhanced

quad T1 framer

Cꢀ3.3V supply with 5V tolerant I/O; low-power

CMOS

CꢀAvailable in 128-pin TQFP package

CꢀIEEE 1149.1 support

DESCRIPTION

The DS21Q44 E1 is an enhanced version of the DS21Q43 quad E1 framer. The DS21Q44 contains four

framers that are configured and read through a common microprocessor-compatible parallel port. Each

framer consists of a receive framer, receive elastic store, transmit formatter, and transmit elastic store. All

four framers in the DS21Q44 are totally independent; they do not share a common framing synchronizer.

The transmit and receive sides of each framer are also totally independent. The dual two-frame elastic

stores contained in each of the four framers can be independently enabled and disabled as required. The

Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device

may be simultaneously available through various sales channels. For information about device errata, click here: www.maxim-ic.com/errata.

1 of 105

062602

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与DS21Q44TN+相关器件

型号	品牌	获取价格	描述	数据表
DS21Q48	DALLAS	获取价格	5V E1/T1/J1 Line Interface
DS21Q48	ROCHESTER	获取价格	DATACOM, PCM TRANSCEIVER, PBGA144, 17 X 17 MM, CSBGA-144
DS21Q48C	MAXIM	获取价格	Digital Transmission Interface, PBGA144
DS21Q48N	DALLAS	获取价格	5V E1/T1/J1 Line Interface
DS21Q50	MAXIM	获取价格	Quad E1 Transceiver
DS21Q50L	MAXIM	获取价格	Quad E1 Transceiver
DS21Q50L+	MAXIM	获取价格	PCM Transceiver, 1-Func, CEPT PCM-30/E-1, CMOS, PQFP100, 14 X 14 MM, LQFP-100
DS21Q50L-C01	MAXIM	获取价格	PCM Transceiver, 1-Func, CMOS, PQFP100, 14 X 14 MM, LQFP-100
DS21Q50L-C02	MAXIM	获取价格	PCM Transceiver, 1-Func, CMOS, PQFP100, 14 X 14 MM, LQFP-100
DS21Q50LN	MAXIM	获取价格	Quad E1 Transceiver

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