參數資料
型號： DS3254+
廠商： Maxim Integrated Products
文件頁數： 22/71頁
文件大小： 0K
描述： IC LIU DS3/E3/STS-1 144-CSBGA
產品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 160
類型： 線路接口裝置（LIU）
驅動器/接收器數： 4/4
規(guī)程： IEEE 1149.1
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 144-BGA，CSPBGA
供應商設備封裝： 144-TECSBGA（13x13）
包裝： 托盤
DS3251/DS3252/DS3253/DS3254
29 of 71
Table 9-A. DS3 Waveform Template
TIME (IN UNIT INTERVALS)
NORMALIZED AMPLITUDE EQUATION
UPPER CURVE
-0.85
≤ T ≤ -0.68
0.03
-0.68
≤ T ≤ +0.36
0.5 {1 + sin[(
π / 2)(1 + T / 0.34)]} + 0.03
0.36
≤ T ≤ 1.4
0.08 + 0.407e
-1.84(T - 0.36)
LOWER CURVE
-0.85
≤ T ≤ -0.36
-0.03
-0.36
≤ T ≤ +0.36
0.5 {1 + sin[(
π / 2)(1 + T / 0.18)]} - 0.03
0.36
≤ T ≤ 1.4
-0.03
Governing Specifications: ANSI T1.102 and Bellcore GR-499.
Table 9-B. DS3 Waveform Test Parameters and Limits
PARAMETER
SPECIFICATION
Rate
44.736Mbps (
±20ppm)
Line Code
B3ZS
Transmission Medium
Coaxial cable (AT&T 734A or equivalent)
Test Measurement Point
At the end of 0 to 450ft of coaxial cable
Test Termination
75
(±1%) resistive
Pulse Amplitude
Between 0.36V and 0.85V
Pulse Shape
An isolated pulse (preceded by two zeros and
followed by one or more zeros) falls within the
curves listed in Table 9-A.
Unframed All-Ones Power Level at 22.368MHz
Between -1.8dBm and +5.7dBm
Unframed All-Ones Power Level at 44.736MHz
At least 20dB less than the power measured at
22.368MHz
Pulse Imbalance of Isolated Pulses
Ratio of positive and negative pulses must be
between 0.90 and 1.10.
Table 9-C. STS-1 Waveform Template
TIME (IN UNIT INTERVALS)
NORMALIZED AMPLITUDE EQUATIONS
UPPER CURVE
-0.85
≤ T ≤ -0.68
0.03
-0.68
≤ T ≤ +0.26
0.5 {1 + sin[(
π / 2)(1 + T / 0.34)]} + 0.03
0.26
≤ T ≤ 1.4
0.1 + 0.61e
-2.4(T - 0.26)
LOWER CURVE
-0.85
≤ T ≤ -0.36
-0.03
-0.36
≤ T ≤ +0.36
0.5 {1 + sin[(
π / 2)(1 + T / 0.18)]} - 0.03
0.36
≤ T ≤ 1.4
-0.03
Governing Specifications: Bellcore GR-253 and Bellcore GR-499 and ANSI T1.102.
Table 9-D. STS-1 Waveform Test Parameters and Limits
PARAMETER
SPECIFICATION
Rate
51.840Mbps (
±20ppm)
Line Code
B3ZS
Transmission Medium
Coaxial cable (AT&T 734A or equivalent)
Test Measurement Point
At the end of 0 to 450ft of coaxial cable
Test Termination
75
(±1%) resistive
Pulse Amplitude
0.800V nominal (not covered in specs)
Pulse Shape
An isolated pulse (preceded by two zeros and
followed by one or more zeros) falls within the
curved listed in Table 9-C.
Unframed All-Ones Power Level at 25.92MHz
Between -1.8dBm and +5.7dBm
Unframed All-Ones Power Level at 51.84MHz
At least 20dB less than the power measured at
25.92MHz.
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相關代理商/技術參數
參數描述
DS3254+ 功能描述:網絡控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS3254A3 功能描述:網絡控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS3254A3+ 功能描述:網絡控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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
DS3254DK 功能描述:網絡開發(fā)工具 DS3254 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
DS3254N 功能描述:網絡控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 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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