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參數(shù)資料
| 型號： | PCKEP14 |
| 英文描述： | 2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver |
| 中文描述： | 2.5 V/3.3 V 1:5差動ECL / PECL的/ HSTL時鐘驅(qū)動器 |
| 文件頁數(shù)： | 1/15頁 |
| 文件大小： | 388K |
| 代理商： | PCKEP14 |
PCKEP14
2.5 V/3.3 V 1:5 differential ECL/PECL/HSTL clock driver
Rev. 01 — 30 October 2002
Product data
1.
Description
The PCKEP14 is a low skew 1-to-5 differential driver, designed with clock distribution
in mind, accepting two clock sources into an input multiplexer. The ECL/PECL input
signals can be either differential or single-ended (if the V
BB
output is used). HSTL
inputs can be used when the PCKEP14 is operating under PECL conditions.
The PCKEP14 specifically guarantees low output-to-output skew. Optimal design,
layout, and processing minimize skew within a device, and from device to device.
To ensure that the tight skew specification is realized, both sides of any differential
output need to be terminated identically into 50
resistors, even if only one output is
being used. If an output pair is unused, both outputs may be left open (unterminated)
without affecting skew.
The common enable (EN) is synchronous, outputs are enabled/disabled in the LOW
state. This avoids a runt clock pulse when the device is enabled/disabled, as can
happen with an asynchronous control. The internal flip-flop is clocked on the falling
edge of the input clock, therefore, all associated specification limits are referenced to
the negative edge of the clock input.
The PCKEP14, as with most other ECL devices, can be operated from a positive V
CC
supply in PECL mode. This allows the PCKEP14 to be used for high performance
clock distribution in +3.3 V or +2.5 V systems.
2.
Features
I
100 ps device-to-device skew
I
25 ps within device skew
I
400 ps typical propagation delay
I
Maximum frequency > 2 GHz (typical)
I
Contains temperature compensation
I
PECL and HSTL mode: V
CC
= 2.375 V to 3.8 V with V
EE
= 0 V
I
NECL mode: V
CC
= 0 V with V
EE
=
2.375 V to
3.8 V
I
LVDS input compatible
I
Open input default state.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCKEP14D | 功能描述:時鐘驅(qū)動器及分配 2.5/3.3V 1:5 ECL/PECL/HSTL CLK RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| PCKEP14D, 112 | 功能描述:時鐘驅(qū)動器及分配 RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| PCKEP14D, 118 | 功能描述:時鐘驅(qū)動器及分配 RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| PCKEP14D,112 | 功能描述:時鐘驅(qū)動器及分配 2.5/3.3V 1:5 RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| PCKEP14D,118 | 功能描述:時鐘驅(qū)動器及分配 2.5/3.3V 1:5 RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
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