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CY2SSTU877BVXC-43T PDF预览

CY2SSTU877BVXC-43T

更新时间: 2024-11-20 03:23:19
品牌 Logo 应用领域
赛普拉斯 - CYPRESS /
页数 文件大小 规格书
9页 197K
描述
1.8V, 500-MHz, 10-Output JEDEC-Compliant Zero Delay Buffer

CY2SSTU877BVXC-43T 技术参数

是否Rohs认证: 符合生命周期:Transferred
零件包装代码:BGA包装说明:VFBGA,
针数:52Reach Compliance Code:compliant
HTS代码:8542.39.00.01风险等级:5.23
系列:SSTU输入调节:DIFFERENTIAL
JESD-30 代码:R-PBGA-B52长度:7 mm
逻辑集成电路类型:PLL BASED CLOCK DRIVER功能数量:1
反相输出次数:端子数量:52
实输出次数:10最高工作温度:70 °C
最低工作温度:输出特性:3-STATE
封装主体材料:PLASTIC/EPOXY封装代码:VFBGA
封装形状:RECTANGULAR封装形式:GRID ARRAY, VERY THIN PROFILE, FINE PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
Same Edge Skew-Max(tskwd):0.04 ns座面最大高度:1 mm
最大供电电压 (Vsup):1.9 V最小供电电压 (Vsup):1.7 V
标称供电电压 (Vsup):1.8 V表面贴装:YES
温度等级:COMMERCIAL端子形式:BALL
端子节距:0.65 mm端子位置:BOTTOM
处于峰值回流温度下的最长时间:NOT SPECIFIED宽度:4.5 mm
Base Number Matches:1

CY2SSTU877BVXC-43T 数据手册

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CY2SSTU877  
PRELIMINARY  
1.8V, 500-MHz, 10-Output JEDEC-Compliant  
Zero Delay Buffer  
distributes a differential clock input pair (CK, CK#) to ten differ-  
ential pair of clock outputs (Y[0:9], Y#[0:9]) and one differential  
pair of feedback clock outputs (FBOUT, FBOUT#).  
Features  
• Operating frequency: 125 MHz to 500 MHz  
• Supports DDRII SDRAM  
The input clocks (CK, CK#), the feedback clocks (FBIN,  
FBIN#), the LVCMOS (OE, OS), and the analog power input  
(AVDD) control the clock outputs.  
• 1 to 10 differential clock buffer (SSTL_18)  
• Spread-Spectrum-compatible  
• Low jitter (cycle-to-cycle): 40 ps  
• Very low output-to-output skew: 40 ps  
• Auto power-down feature when input is low  
• 1.8V operation  
The PLL in the CY2SSTU877 clock driver uses the input  
clocks (CK, CK#) and the feedback clocks (FBIN, FBIN#) to  
provide high-performance, low-skew, low-jitter output differ-  
ential clocks (Y[0:9], Y#[0:9]). The CY2SSTU877 is also able  
to track Spread Spectrum Clocking (SSC) for reduced EMI.  
When AVDD is grounded, the PLL is turned off and bypassed  
for test purposes. When both clock signals (CK, CK#) are logic  
low, the device will enter a low-power mode. An input logic  
detection circuit on the differential inputs, independent from  
the input buffers, will detect the logic low level and perform a  
low-power state where all outputs, the feedback, and the PLL  
are OFF. When the inputs transition from both being logic low  
to being differential signals, the PLL will be turned back on, the  
inputs and outputs will be enabled and the PLL will obtain  
phase lock between the feedback clock pair (FBIN, FBIN#)  
and the input clock pair (CK, CK#) within the specified stabili-  
zation time tL.  
• Fully JEDEC-compliant (JESD 82-8)  
• 52-ball BGA  
Functional Description  
The CY2SSTU877 is a high-performance, low-skew, low-jitter  
zero delay buffer designed to distribute differential clocks in  
high-speed applications.  
This phase-locked loop (PLL) clock buffer is designed for a  
VDD of 1.8V, an AVDD of 1.8V and SSTL18 differential data  
input and output levels. This device is a zero delay buffer that  
Pin Configuration  
Block Diagram  
1
2
3
4
5
6
CLKT1  
CLKC1  
CLKC2  
CLKT2  
CLKT0  
CLKC0 CLKC5 CLKT5  
CLKT6  
CLKC6  
CLKC7  
CLKT7  
FB_INT  
FB_INC  
A
B
C
D
E
F
GND  
GND  
NB  
GND  
NB  
GND  
GND  
OS  
GND  
VDDQ  
VDDQ  
NB  
VDDQ  
NB  
CLK_INT VDDQ  
CLK_INC VDDQ  
VDDQ  
OE  
NB  
NB  
AGND  
AVDD  
CLKT3  
VDDQ  
GND  
GND  
VDDQ  
NB  
VDDQ  
NB  
VDDQ FB_OUTC  
GND FB_OUTT  
G
H
J
GND  
GND  
CLKT9  
GND  
CLKT8  
CLKC3 CLKC4 CLKT4  
CLKC9 CLKC8  
K
52 BGA  
Cypress Semiconductor Corporation  
Document #: 38-07575 Rev. *E  
198 Champion Court  
San Jose, CA 95134-1709  
408-943-2600  
Revised January 27, 2006  

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