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参数资料
型号： DS21448LDK
厂商： Maxim Integrated Products
文件页数： 1/60页
文件大小： 0K
描述： KIT DESIGN LIU DS21448L T1/J1/E1
标准包装： 1
1 of 60
REV: 011206
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.
GENERAL DESCRIPTION
The DS21448 is a quad-port E1 or T1 line interface
unit (LIU) for short-haul and long-haul applications. It
incorporates four independent transmitters and four
independent receivers in a single 144-pin PBGA or
128-pin LQFP package. The transmit drivers
generate the necessary G.703 E1 waveshapes in
75
or 120 applications and the DSX-1 or CSU line
build-outs of 0dB, -7.5dB, -15dB, and -22.5dB for T1
applications.
APPLICATIONS
Integrated Multiservice Access Platforms
T1/E1 Cross-Connects, Multiplexers, and Channel
Banks
Central-Office Switches and PBX Interfaces
T1/E1 LAN/WAN Routers
Wireless Base Stations
ORDERING INFORMATION
PART*
TEMP RANGE
PIN-PACKAGE
DS21448
0°C to +70°C
144 TE-PBGA
DS21448+
0°C to +70°C
144 TE-PBGA
DS21448N
-40°C to +85°C
144 TE-PBGA
DS21448N+
-40°C to +85°C
144 TE-PBGA
DS21448L
0°C to +70°C
128 LQFP
DS21448L+
0°C to +70°C
128 LQFP
DS21448LN
-40°C to +85°C
128 LQFP
DS21448LN+
-40°C to +85°C
128 LQFP
+ Denotes lead-free/RoHS-compliant package.
*All devices rated at 3.3V.
Pin Configurations appear in Section 11.
FEATURES
Four Complete E1, T1, or J1 LIUs
Supports Long- and Short-Haul Trunks
Internal Software-Selectable Receive-Side
Termination for 75
/100/120
3.3V Power Supply
32-Bit or 128-Bit Crystal-Less Jitter Attenuator
Requires Only a 2.048MHz Master Clock for E1
and T1, with the Option to Use 1.544MHz for T1
Generates the Appropriate Line Build-Outs With
and Without Return Loss for E1, and DSX-1 and
CSU Line Build-Outs for T1
AMI, HDB3, and B8ZS Encoding/Decoding
16.384MHz, 8.192MHz, 4.096MHz, or 2.048MHz
Clock Output Synthesized to Recovered Clock
Programmable Monitor Mode for Receiver
Loopbacks and PRBS Pattern Generation/
Detection with Output for Received Errors
Generates/Detects In-Band Loop Codes, 1 to 16
Bits, Including CSU Loop Codes
8-Bit Parallel or Serial Interface with Optional
Hardware Mode
Muxed and Nonmuxed Parallel Bus Supports
Intel or Motorola
Detects/Generates Blue (AIS) Alarms
NRZ/Bipolar Interface for Tx/Rx Data I/O
Transmit Open-Circuit Detection
Receive Carrier Loss (RCL) Indication (G.775)
High-Z State for TTIP and TRING
50mARMS Transmit Current Limiter
JTAG Boundary Scan Test Port per IEEE 1149.1
Meets Latest E1 and T1 Specifications Including
ANSI.403-1999, ANSI T1.408, AT&T TR 62411,
ITU G.703, G.704, G.706, G.736, G.775, G.823,
I.431, O.151, O.161, ETSI ETS 300 166,
JTG.703, JTI.431, TBR12, TBR13, and CTR4
DS21448
3.3V E1/T1/J1 Quad Line Interface
www.maxim-ic.com
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相关代理商/技术参数
参数描述
DS21448LN 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448LN+ 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448-LW 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448N 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS2145 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC
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