- 您现在的位置：买卖IC网 > PDF目录177781 > LCK4801 Low-Voltage HSTL Differential Clock PDF资料下载
参数资料
| 型号： | LCK4801 |
| 英文描述： | Low-Voltage HSTL Differential Clock |
| 中文描述： | 低电压差分HSTL时钟 |
| 文件页数： | 1/10页 |
| 文件大小： | 160K |
| 代理商： | LCK4801 |
Preliminary Data Sheet
July 2001
LCK4801
Low-Voltage HSTL Differential Clock
General
The LCK4801 is a low-voltage, 3.3 V HSTL
differential clock synthesizer. The LCK4801 supports
two differential HSTL output pairs with frequencies
from 336 MHz to 1 GHz. The clock is designed to
support single and multiple processor systems that
require HSTL differential inputs. The LCK4801
contains a fully integrated PLL (phase-locked loop)
which multiplies the HSTL_CLK or PECL_CLK input
frequency to match individual processor clock
frequencies. The PLL can be bypassed so that the
PCLK outputs are fed from the HSTL_CLK or
PECL_CLK input for test purposes. All outputs are
powered from a 2 V external supply to reduce on-
chip power consumption. All outputs are HSTL. The
PLL can operate in the internal feedback mode, or in
the external feedback mode for board level
debugging applications.
Features
s
Two fully selectable clock inputs.
s
Fully integrated PLL.
s
336 MHz to 1 GHz output frequencies.
s
HSTL outputs.
s
HSTL and LVPECL reference clocks.
s
32-pin TQFP package.
Description
2274.a (F)
Figure 1. LCK4801 Logic Diagram
PCLK0_EN (PULL-UP)
PCLK1_EN (PULL-UP)
TESTM (PULL-UP)
PLLREF_EN (PULL-UP)
REF_SEL (PULL-UP)
HSTL_CLK (PULL-UP)
PECL_CLK (PULL-UP)
EXTFB_IN (HSTL)
(PULL-UP)
(PULL-DOWN)
EXTFB_EN (PULL-UP)
SEL[4:0] (PULL-UP)
RESET (PULL-UP)
PLL_BYPASS (PULL-UP)
EXTFB_OUT (HSTL)
PCLK0
PCLK1
PLL
/N
/M
DECODE
0
1
0
1
0
1
PCLK0 (HSTL)
PCLK1 (HSTL)
EXTFB_OUT
HSTL_CLK (PULL-UP)
PECL_CLK (PULL-UP)
相关PDF资料 |
PDF描述 |
|---|---|
| LCK4802 | Low-Voltage PECL Differential Clock |
| LCMXO2280E-5FT256C | |
| LCMXO2280E-5M132C | |
| LCMXO1200C-3B256I | |
| LCMXO640E-4T144C | |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LCK4802 | 制造商:AGERE 制造商全称:AGERE 功能描述:Low-Voltage PECL Differential Clock |
| LCK4950 | 制造商:AGERE 制造商全称:AGERE 功能描述:Low-Voltage PLL Clock Driver |
| LCK4953 | 制造商:AGERE 制造商全称:AGERE 功能描述:Low-Voltage PLL Clock Driver |
| LCK4972 | 制造商:AGERE 制造商全称:AGERE 功能描述:Low-Voltage PLL Clock Driver |
| LCK4973 | 制造商:AGERE 制造商全称:AGERE 功能描述:Low-Voltage PLL Clock Driver |
发布紧急采购，3分钟左右您将得到回复。