參數(shù)資料
型號(hào)： DS3254DK
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 22/71頁(yè)
文件大小： 0K
描述： KIT DEMO FOR DS3254
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
設(shè)計(jì)資源： DS3254DK Gerber Files
標(biāo)準(zhǔn)包裝： 1
主要目的： 電信，線路接口單元（LIU）
已用 IC / 零件： DS3254
已供物品： 板，CD
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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS3254N 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3254N# 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3254N+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC Quad DS3/E3/STS-1 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS3254NA3 制造商:Maxim Integrated Products 功能描述:QUAD ENH DS3/E3 LIU REV A3 IND - Rail/Tube
DS3256 功能描述:網(wǎng)絡(luò)控制器與處理器 IC X6 T3/E3 Line Interface Unit RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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