參數(shù)資料
型號： DS21448L
廠商： Maxim Integrated Products
文件頁數(shù)： 1/60頁
文件大?。?/td> 0K
描述： IC LIU QUAD E1/T1/J1 128-LQFP
產品培訓模塊： Lead (SnPb) Finish for COTS
產品變化通告： Product Discontinuation 20/Feb/2012
標準包裝： 72
類型： 線路接口裝置（LIU）
驅動器/接收器數(shù)： 4/4
規(guī)程： T1/E1/J1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 128-LQFP
供應商設備封裝： 128-LQFP（14x20）
包裝： 管件
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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相關代理商/技術參數(shù)
參數(shù)描述
DS21448L+ 功能描述:網絡控制器與處理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21448L+W 功能描述:網絡控制器與處理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21448LDK 功能描述:KIT DESIGN LIU DS21448L T1/J1/E1 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像，彩色（RGB） 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
DS21448LN 功能描述:網絡控制器與處理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21448LN+ 功能描述:網絡控制器與處理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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