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參數(shù)資料
| 型號(hào)： | 844256BGT |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | XO, clock |
| 英文描述： | 622.08 MHz, OTHER CLOCK GENERATOR, PDSO24 |
| 封裝： | 4.40 X 7.80 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24 |
| 文件頁(yè)數(shù)： | 1/17頁(yè) |
| 文件大?。?/td> | 390K |
| 代理商： | 844256BGT |
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FEMTOCLOCKS CRYSTAL-TO-LVDS
FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER
ICS844256
IDT / ICS LVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER
1
ICS844256BG REV. A NOVEMBER 7, 2008
GENERAL DESCRIPTION
The ICS844256 is a Cr ystal-to-LVDS Clock
Synthesizer/Fanout Buffer designed for
SONET
and Gigabit Ether net applications and is a
member of the HiperClock S family of High
Perfor mance Clock Solutions from IDT. The
output frequency can be set using the frequency select
pins and a 25MHz cr ystal for Ether net frequencies, or a
19.44MHz crystal for SONET. The low phase noise character-
istics of the ICS844256 make it an ideal clock for these
demanding applications.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
Six LVDS outputs
Crystal oscillator interface
Output frequency range: 62.5MHz to 622.08MHz
Crystal input frequency range: 15.625MHz to 25.5MHz
RMS phase jitter at 125MHz, using a 25MHz crystal
(1.875MHz to 20MHz): 0.48ps (typical)
Full 3.3V or 3.3V core, 2.5V output supply mode
0°C to 70°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
HiPerClockS
ICS
Q0
VDDO
nQ2
Q2
nQ1
Q1
nQ0
Q0
PLL_BYPASS
VDDA
VDD
FB_SEL
1
2
3
4
5
6
7
8
9
10
11
12
Q3
nQ3
Q4
nQ4
Q5
nQ5
N_SEL1
GND
N_SEL0
XTAL_OUT
XTAL_IN
OSC
PLL
Feedback
Divider
Output
Divider
1
0
XTAL_IN
XTAL_OUT
PLL_BYPASS
nQ0
24
23
22
21
20
19
18
17
16
15
14
13
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
FB_SEL
N_SEL1
N_SEL0
Pullup
Pulldown
Pullup
ICS844256
24-Lead TSSOP, E-Pad
4.40mm x 7.8mm x 0.90mm
body package
G Package
Top View
SELECT FUNCTION TABLE
s
t
u
p
n
In
o
i
t
c
n
u
F
L
E
S
_
B
F1
L
E
S
_
N0
L
E
S
_
Ne
d
i
v
i
D
Me
d
i
v
i
D
NN
/
M
00
0
5
21
5
2
00
1
5
22
5
.
2
1
01
0
5
24
5
2
.
6
01
1
5
25
5
10
0
2
31
2
3
10
1
2
32
6
1
11
0
2
34
8
11
1
2
38
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 844256CK-24LF | 制造商:Integrated Device Technology Inc 功能描述:LVDS 0.385V 32PIN VFQFN - Rail/Tube |
| 844256CK-24LFT | 制造商:Integrated Device Technology Inc 功能描述:PLL Frequency Synthesizer Single 32-Pin VFQFPN EP T/R 制造商:Integrated Device Technology Inc 功能描述:32 VFQFN (LEAD-FREE) - Tape and Reel |
| 844256DGILF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| 844256DGILFT | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| 844256DGLF | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
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