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參數(shù)資料
| 型號(hào)： | PI6C3991JE |
| 廠商： | Pericom |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC PROG SKEW CLOCK DRIVER 32PLCC |
| 產(chǎn)品變化通告： | Product Discontinuation Notice 22/Jan/2010 |
| 標(biāo)準(zhǔn)包裝： | 32 |
| 系列： | SuperClock® |
| 類型： | 時(shí)鐘緩沖器 |
| PLL： | 是 |
| 輸入： | LVTTL |
| 輸出： | LVTTL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 5:4 |
| 差分 - 輸入:輸出： | 無/無 |
| 頻率 - 最大： | 80MHz |
| 除法器/乘法器： | 是/是 |
| 電源電壓： | 2.97 V ~ 3.63 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-LCC（J 形引線） |
| 供應(yīng)商設(shè)備封裝： | 32-PLCC（11.43x13.97） |
| 包裝： | 管件 |
1
PS8450D
03/06/08
Features
All output pair skew <100ps typical (250 Max.)
3.75 MHz to 80 MHz output operation
User-selectable output functions
— Selectable skew to 18ns
— Inverted and Non-Inverted
— Operation at and input frequency
— Operation at 2X and 4X input frequency
(input as low as 3.75 MHz, x4 operation)
Zero input-to-output delay
50% duty-cycle outputs
LVTTL outputs drive 50-ohm terminated lines
Operates from a single 3.3V supply
Low operating current
Available in 32-pin PLCC (J) package
Jitter < 200ps peak-to-peak (< 25ps RMS)
Description
PI6C3991 offers selectable control over system clock functions.
These multiple-output clock drivers provide the system integrator
with functions necessary to optimize the timing of high-perfor-
mance computer systems. Eight individual drivers, arranged as four
pairs of user-controllable outputs, can each drive terminated trans-
mission lines with impedances as low as 50 ohms while delivering
minimal and specified output skews and full-swing logic levels
(LVTTL).
Each output can be hardwired to one of nine skews or function
configurations. Delay increments of 0.7ns to 1.5ns are determined
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 transmission line delay
effects to be canceled. The user can create output-to-output skew
up to ±12 time units.
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 multiplied by
two or four at the clock destination. This feature allows flexibility
and simplifies system timing distribution design for complex
high-speed systems.
Logic Block Diagram
PinConfiguration
1Q0
1Q1
1F0
1F1
2Q0
2Q1
2F0
2F1
3Q0
3Q1
3F0
3F1
4Q0
4Q1
4F0
4F1
Select Inputs
(three level)
Matrix
Select
Skew
Test
Filter
Phase
Freq.
DET
FB
REF
VCO and
Time Unit
Generator
FS
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI6C3991
3.3V High-Speed, Low-Voltage
Programmable Skew Clock Buffer
SuperClock
2F0
GND
1F1
1F0
VCCN
1Q0
1Q1
GND
3F1
4F0
4F1
VCCQ
VCCN
4Q1
4Q0
GND
5
6
7
8
9
10
11
12
13
29
28
27
26
25
24
23
22
21
3Q1
3Q0
V
CCN
FB
V
CCN
2Q1
2Q0
3F0
FS
V
CC
Q
REF
GND
TES
T
2F1
4321
32 31
30
14 15 16 17 18 19
20
32-Pin
J
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI6C3991JI | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Eight Distributed-Output Clock Driver |
| PI6C3Q991 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V Programmable Skew PLL Clock Driver |
| PI6C3Q991-2 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Eight Distributed-Output Clock Driver |
| PI6C3Q991-2J | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V Programmable Skew PLL Clock Driver |
| PI6C3Q991-5 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Clock IC | 500ps Accuracy. 3.3V. Balanced. 3.75 to 85 MHz |
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