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CY7B992-5JC

更新时间: 2024-11-16 23:16:27
品牌 Logo 应用领域
赛普拉斯 - CYPRESS 时钟驱动器逻辑集成电路
页数 文件大小 规格书
15页 290K
描述
Programmable Skew Clock Buffer

CY7B992-5JC 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:QFJ
包装说明:QCCJ, LDCC32,.5X.6针数:32
Reach Compliance Code:unknownHTS代码:8542.39.00.01
Factory Lead Time:1 week风险等级:5.47
Is Samacsys:N系列:7B
输入调节:STANDARDJESD-30 代码:R-PQCC-J32
JESD-609代码:e0长度:13.97 mm
逻辑集成电路类型:PLL BASED CLOCK DRIVER最大I(ol):0.046 A
湿度敏感等级:3功能数量:1
反相输出次数:端子数量:32
实输出次数:4最高工作温度:70 °C
最低工作温度:封装主体材料:PLASTIC/EPOXY
封装代码:QCCJ封装等效代码:LDCC32,.5X.6
封装形状:RECTANGULAR封装形式:CHIP CARRIER
峰值回流温度(摄氏度):225电源:5 V
Prop。Delay @ Nom-Sup:0.5 ns传播延迟(tpd):0.5 ns
认证状态:Not QualifiedSame Edge Skew-Max(tskwd):0.5 ns
座面最大高度:3.556 mm子类别:Clock Drivers
最大供电电压 (Vsup):5.5 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:J BEND端子节距:1.27 mm
端子位置:QUAD处于峰值回流温度下的最长时间:30
宽度:11.43 mm最小 fmax:80 MHz
Base Number Matches:1

CY7B992-5JC 数据手册

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92  
CY7B991  
CY7B992  
Programmable Skew Clock Buffer  
functions. These multiple-output clock drivers provide the sys-  
tem integrator with functions necessary to optimize the timing  
of high-performance computer systems. Eight individual driv-  
ers, arranged as four pairs of user-controllable outputs, can  
each drive terminated transmission lines with impedances as  
low as 50while delivering minimal and specified output skews  
and full-swing logic levels (CY7B991 TTL or CY7B992 CMOS).  
Features  
• All output pair skew <100 ps typical (250 max.)  
• 3.75- to 80-MHz output operation  
• User-selectable output functions  
— Selectable skew to 18 ns  
— Inverted and non-inverted  
— Operation at 12 and 14 input frequency  
Each output can be hardwired to one of nine delay or function  
configurations. Delay increments of 0.7 to 1.5 ns are deter-  
mined by the operating frequency with outputs able to skew up  
to ±6 time units from their nominal zeroskew position. The com-  
pletely integrated PLL allows external load and transmission line  
delay effects to be canceled. When this zero delaycapability of the  
PSCB is combined with the selectable output skew functions, the  
user can create output-to-output delays of up to ±12 time units.  
— Operation at 2x and 4x input frequency (input as low  
as 3.75 MHz)  
• Zero input to output delay  
• 50% duty-cycle outputs  
Outputs drive 50terminated lines  
Low operating current  
32-pin PLCC/LCC package  
Divide-by-two and divide-by-four output functions are provided  
for additional flexibility in designing complex clock systems.  
When combined with the internal PLL, these divide functions  
allow distribution of a low-frequency clock that can be multi-  
plied by two or four at the clock destination. This facility mini-  
mizes clock distribution difficulty while allowing maximum sys-  
tem clock speed and flexibility.  
Jitter < 200 ps peak-to-peak (< 25 ps RMS)  
Compatible with a Pentium-based processor  
Functional Description  
The CY7B991 and CY7B992 Programmable Skew Clock Buff-  
ers (PSCB) offer user-selectable control over system clock  
Logic Block Diagram  
Pin Configuration  
TEST  
PLCC/LCC  
PHASE  
FREQ  
DET  
FB  
VCO AND  
TIME UNIT  
GENERATOR  
FILTER  
REF  
4
3
2
1
32 31 30  
29  
FS  
2F0  
GND  
1F1  
1F0  
5
6
3F1  
4F0  
28  
27  
4Q0  
4Q1  
4F0  
4F1  
4F1  
7
8
9
SELECT  
INPUTS  
(THREE  
LEVEL)  
V
26  
25  
24  
23  
CCQ  
CY7B991  
CY7B992  
V
CCN  
SKEW  
SELECT  
MATRIX  
V
CCN  
3Q0  
3Q1  
3F0  
3F1  
4Q1  
10  
1Q0  
1Q1  
GND  
GND  
4Q0  
GND  
GND  
11  
12  
22  
21  
2Q0  
2Q1  
2F0  
2F1  
13  
14 15 16 17 18 19 20  
1Q0  
1Q1  
1F0  
1F1  
7B9912  
7B9911  
Pentium is a trademark of Intel Corporation.  
Cypress Semiconductor Corporation  
3901 North First Street  
San Jose  
CA 95134  
408-943-2600  
Document #: 38-07138 Rev. **  
Revised September 26, 2001  

CY7B992-5JC 替代型号

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