參數(shù)資料
型號(hào): ICS8701CYIT
廠商: INTEGRATED DEVICE TECHNOLOGY INC
元件分類: 時(shí)鐘及定時(shí)
英文描述: 8701 SERIES, LOW SKEW CLOCK DRIVER, 20 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
封裝: 7 X 7 MM, 1.40 MM HEIGHT, MS-026BBC, LQFP-48
文件頁(yè)數(shù): 1/13頁(yè)
文件大?。?/td> 118K
代理商: ICS8701CYIT
8701CYI
www.icst.com/products/hiperclocks.html
REV. B FEBRUARY 28, 2006
1
Integrated
Circuit
Systems, Inc.
ICS8701I
LOW SKEW,
÷1, ÷2
CLOCK GENERATOR
GENERAL DESCRIPTION
he ICS8701I is a low skew, ÷1, ÷2 Clock Gen-
erator and a member of the HiPerClockSfamily
of High Performance Clock Solutions from ICS.
The low impedance LVCMOS outputs are de-
signed to drive 50
Ω series or parallel terminated
transmission lines. The effective fanout can be increased from
20 to 40 by utilizing the ability of the outputs to drive two se-
ries terminated lines.
The divide select inputs, DIV_SELx, control the output
frequency of each bank. The outputs can be utilized in the ÷1,
÷2 or a combination of ÷1 and ÷2 modes. The bank enable
inputs, BANK_EN0:1, support enabling and disabling each
bank of outputs individually. The master reset input, nMR/OE,
resets the internal frequency dividers and also controls the
active and high impedance states of all outputs.
The ICS8701I is characterized at 3.3V and mixed 3.3V input
supply, and 2.5V output supply operating modes. Guaranteed
bank, output and part-to-part skew characteristics make the
ICS8701I ideal for those clock distribution applications de-
manding well defined performance and repeatability.
FEATURES
Twenty LVCMOS outputs, 7
Ω typical output impedance
LVCMOS / LVTTL clock input
Maximum input frequency: 250MHz
Bank enable logic allows unused banks to be disabled
in reduced fanout applications
Bank skew: 200ps
Output skew: 250ps
Multiple frequency skew: 300ps
Part-to-part skew: 600ps
3.3V or mixed 3.3V input, 2.5V output operating supply
-40°C to 85°C ambient operating temperature
Other divide values available on request
Available in both standard and lead-free RoHS compliant
packages
BLOCK DIAGRAM
PIN ASSIGNMENT
DIV_SELA
DIV_SELB
DIV_SELC
DIV_SELD
nMR/OE
BANK_EN0
BANK_EN1
QA0:QA4
QB0:QB4
QC0:QC4
QD0:QD4
CLK
HiPerClockS
ICS
1
0
÷1
÷2
1
0
1
0
1
0
Bank Enable
Logic
48 47 46 45 44 43 42 41 40 39 38 37
13 14 15 16 17 18 19 20 21 22 23 24
1
2
3
4
5
6
7
8
9
10
11
12
36
35
34
33
32
31
30
29
28
27
26
25
QC3
VDDO
QC4
QD0
VDDO
QD1
GND
QD2
GND
QD3
VDDO
QD4
QB1
VDDO
QB0
QA4
VDDO
QA3
GND
QA2
GND
QA1
VDDO
QA0
DIV_SELA
DIV_SELB
CLK
GND
V
DDI
BANK_EN0
GND
BANK_EN1
V
DDI
nMR/OE
DIV_SELC
DIV_SELD
GND
QB2
GND
QB3
V
DDO
QB4
QC0
V
DDO
QC1
GND
QC2
GND
48-Pin LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
ICS8701I
相關(guān)PDF資料
PDF描述
ICS8701CYIT 8701 SERIES, LOW SKEW CLOCK DRIVER, 20 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8701CYLF 8701 SERIES, LOW SKEW CLOCK DRIVER, 20 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS8701CYLFT 8701 SERIES, LOW SKEW CLOCK DRIVER, 20 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP48
ICS87021AMILF 87021 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
ICS87021AMILFT 87021 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8
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