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7B991RPFI PDF预览

7B991RPFI

更新时间: 2024-02-12 13:13:36
品牌 Logo 应用领域
麦斯威 - MAXWELL 时钟
页数 文件大小 规格书
17页 246K
描述
Programmable Skew Clock Buffer (PSCB)

7B991RPFI 技术参数

生命周期:Active包装说明:RAD PAK, DFP-16
Reach Compliance Code:compliantHTS代码:8542.39.00.01
风险等级:5.6输入调节:STANDARD
JESD-30 代码:R-XDFP-F32长度:20.828 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:32
实输出次数:8最高工作温度:85 °C
最低工作温度:-40 °C封装主体材料:UNSPECIFIED
封装代码:DFP封装形状:RECTANGULAR
封装形式:FLATPACK认证状态:Not Qualified
Same Edge Skew-Max(tskwd):1.2 ns座面最大高度:3.7338 mm
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:INDUSTRIAL端子形式:FLAT
端子节距:1.27 mm端子位置:DUAL
宽度:12.192 mm最小 fmax:80 MHz
Base Number Matches:1

7B991RPFI 数据手册

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7B991  
Programmable Skew  
Clock Buffer (PSCB)  
Logic Diagram  
FEATURES:  
DESCRIPTION:  
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  
Maxwell Technologies’ 7B991 Programmable Skew Clock  
Buffers (PSCB) offer user-selectable control over system  
clock functions. These multiple-output clock drivers provide  
the system integrator with functions necessary to optimize tim-  
ing of high-performance computer systems. Eight individual  
drivers, 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.  
Inverted and non-inverted  
• Operation at ½ and ¼ input frequency  
• 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  
• Package: 32-pin RAD-PAK® flat package  
• Jitter < 200 ps peak-to-peak (< 25 ps RMS)  
• Compatible with Pentium-based processor  
Total dose hardness:  
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 zero” skew position. The  
completely integrated PLL allows external load and transmis-  
sion line delay effects to be canceled. When this zero delay”  
capability 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.  
- >100 krads (Si), depending upon space mission  
• Excellent Single Event Effects:  
- SEL > 116MeV/mg/cm2  
- SEUTH -3 MeV/mg/cm2  
- SEU sat cross section: 1E-3/device  
Maxwell Technologies' patented RAD-PAK® packaging technol-  
ogy incorporates radiation shielding in the microcircuit pack-  
age. It eliminates the need for box shielding while providing  
the required radiation shielding for a lifetime in orbit or space  
mission. In a GEO orbit, RAD-PAK provides greater than 100  
krad (Si) radiation dose tolerance. This product is available  
with screening up to Class S.  
09.23.02 Rev 4  
1
All data sheets are subject to change without notice  
(858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com  
©2002 Maxwell Technologies.  
All rights reserved.  

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