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參數(shù)資料
| 型號： | ICS843256CK-24LFT |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC SYNNTHESIZE 6LVPECL 32-VFQFPN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 類型： | 頻率合成器 |
| PLL： | 帶旁路 |
| 輸入： | LVCMOS，LVTTL，晶體 |
| 輸出： | LVPECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:6 |
| 差分 - 輸入:輸出： | 無/是 |
| 頻率 - 最大： | 390.625MHz |
| 除法器/乘法器： | 是/無 |
| 電源電壓： | 3.135 V ~ 3.465 V |
| 工作溫度： | 0°C ~ 70°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 32-VFQFPN 裸露焊盤（4x4） |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 843256CK-24LFT |
FEMTOCLOCKS CRYSTAL-TO-3.3V LVPECL FREQUENCY
SYNTHESIZER WITH/INTEGRATED FANOUT BUFFER
ICS843256
IDT / ICS 3.3V LVPECL FREQUENCY SYNTHESIZER
1
ICS843256BG REV. A MAY 23, 2007
GENERAL DESCRIPTION
The ICS843256 is a Crystal-to-3.3V LVPECL Clock
Synthesizer/Fanout Buffer designed for Fibre
Channel and Gigabit Ethernet applications and is
a member of the HiperClockS family of High
Performance Clock Solutions from IDT. The output
frequency can be set using the frequency select pins and a
25MHz crystal for Ethernet frequencies, or a 19.44MHz crystal
for SONET. The low phase noise character istics of the
ICS843256 make it an ideal clock for these demanding
applications.
FEATURES
Six 3.3V differential LVPECL output pairs
Output frequency range: 62.5MHz to 625MHz
Crystal input frequency range: 15.625MHz to 25.5MHz
RMS phase jitter at 156.25MHz, using a 25MHz crystal
(1.875MHz to 20MHz): 0.41ps (typical) @ 3.3V
Operating supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
0°C to 70°C ambient operating temperature
Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
HiPerClockS
ICS
BLOCK DIAGRAM
VCCO
nQ2
Q2
nQ1
Q1
nQ0
Q0
PLL_BYPASS
VCCA
VCC
FB_SEL
1
2
3
4
5
6
7
8
9
10
11
12
Q3
nQ3
Q4
nQ4
Q5
nQ5
N_SEL1
VEE
N_SEL0
XTAL_OUT
XTAL_IN
OSC
PLL
M
Feedback
Divider
N
Output
Divider
1
0
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
XTAL_IN
XTAL_OUT
PLL_BYPASS
FB_SEL
N_SEL1
Pullup
Pulldown
N_SEL0
24
23
22
21
20
19
18
17
16
15
14
13
24-Lead TSSOP, E-Pad
4.40mm x 7.8mm x 0.92mm
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
PIN ASSIGNMENT
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| ICS84325EM | 制造商:ICS 制造商全稱:ICS 功能描述:CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER WITH FANOUT BUFFER |
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