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參數(shù)資料
| 型號(hào)： | PI6C3991-2JE |
| 廠商： | Pericom |
| 文件頁(yè)數(shù)： | 5/11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(wú)/無(wú) |
| 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 |
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PI6C3991
3.3V High-Speed, Low-Voltage Programmable
Skew Clock Buffer - SuperClock
3
PS8450D
11/12/08
t 0
–6
t U
t 0
–5
t U
t 0
–4
t U
t 0
–3
t U
t 0
–2
t U
t 0
–1
t U
t 0
+1
t U
t 0
+2
t U
t 0
+3
t U
t 0
+4
t U
t 0
+5
t U
t 0
+6
t U
FB Input
REF Input
(N/A)
HH
Invert
(N/A) LL/HH Divided
(N/A)
LM
–6tU
LL
LH
–4tU
LM
(N/A)
–3tU
LH
ML
–2tU
ML
(N/A)
–1tU
MM
0tU
MH
(N/A)
+1tU
HL
MH
+2tU
HM
(N/A)
+3tU
HH
HL
+4tU
(N/A)
HM
+6tU
1Fx
2Fx
3Fx
4Fx
Figure 1. Typical Outputs with FB Connected to a
Zero-Skew Output
(3)
Note:
3. FB connected to an output selected for "zero" skew
(ie.,xF1=xF0=MID).
Block Diagram Description
Phase Frequency Detector and Filter
These two blocks accept input signals from the reference frequency
(REF) input and the feedback (FB) input and generate correction
information to control the frequency of the Voltage-Controlled
Oscillator (VCO). These blocks, along with the VCO, form a Phase-
Locked Loop (PLL) that tracks the incoming REF signal.
VCO and Time Unit Generator
The VCO accepts analog control inputs from the PLL filter block
and generates a frequency that is used by the time unit generator
to create discrete time units that are selected in the skew mix matrix.
The operational range of the VCO is determined by the FS control
pin. The time unit (tU) is determined by the operating frequency of
the device and the level of the FS pin as shown in Table 1.
Skew Select Matrix
The skew select matrix is comprised of four independent sections.
Each section has two low-skew, high-fanout drivers (xQ0, xQ1),
and two corresponding three-level function select (xF0, xF1)
inputs. Table 2 shows the nine possible output functions for each
section as determined by the function select inputs. All times are
measured with respect to the REF input assuming that the output
connected to the FB input has 0tU selected.
e
g
n
a
Re
r
u
t
a
r
e
p
m
e
T
t
n
e
i
b
m
AV C
C
l
a
i
c
r
e
m
o
CC
°
0
7
+
o
t
C
°
0%
0
1
±
V
3
.
3
l
a
i
r
t
s
u
d
n
IC
°
5
8
+
o
t
C
°
0
4
–%
0
1
±
V
3
.
3
Test Mode
The TEST input is a three-level input. In normal system operation,
this pin is connected to ground, allowing the PI6C3991 to operate
as explained briefly above (for testing purposes, any of the three
level inputs can have a removable jumper to ground, or be tied LOW
through a 100 Ohm resistor. This will allow an external tester to
change the state of these pins.)
If the TEST input is forced to its MID or HIGH state, the device will
operate with its internal phase locked loop disconnected, and input
levels supplied to REF will directly control all outputs. Relative
output to output functions are the same as in normal mode.
In contrast with normal operation (TEST tied LOW). All outputs
will function based only on the connection of their own function
select inputs (xF0 and xF1) and the waveform characteristics of
the REF input.
Storage Temperature ...................................... –65°C to +150°C
Ambient Temperature with
Power Applied ................................................. –55°Cto+125°C
Supply Voltage to Ground Potential .................. –0.5Vto+7.0V
DC Input Voltage ...............................................–0.5Vto+7.0V
Output Current into Outputs (LOW) ............................... 64mA
Static Discharge Voltage ............................................... >2001V
(perMIL-STD-883,Method3015)
Latch-Up Current .........................................................>200mA
Maximum Ratings
Operating Range
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI6C3991-5 | 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. LVTTL. 3.75 to 80 MHz |
| PI6C3991-5I | 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. LVTTL. 3.75 to 80 MHz. Industrial Temp. Operation |
| PI6C3991-5IJ | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V High-Speed, Low-Voltage Programmable Skew Clock Buffer SuperClock |
| PI6C3991-5J | 制造商:Pericom Semiconductor Corporation 功能描述:Zero Delay Programmable PLL Clock Buffer Single 15MHz to 80MHz 32-Pin PLCC |
| PI6C3991-5JE | 功能描述:鎖相環(huán) - PLL Programmable Skew Zero Delay RoHS:否 制造商:Silicon Labs 類型:PLL Clock Multiplier 電路數(shù)量:1 最大輸入頻率:710 MHz 最小輸入頻率:0.002 MHz 輸出頻率范圍:0.002 MHz to 808 MHz 電源電壓-最大:3.63 V 電源電壓-最小:1.71 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:QFN-36 封裝:Tray |
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