参数资料
型号: ICS87322AYI
元件分类: 时钟及定时
英文描述: LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP52
封装: 10 X 10 MM, 1.40 MM HEIGHT, MS-026, TQFP-52
文件页数: 1/14页
文件大小: 179K
代理商: ICS87322AYI
87322AYI
www.icst.com/products/hiperclocks.html
REV. A APRIL 11, 2003
1
Integrated
Circuit
Systems, Inc.
ICS87322I
LOW SKEW,
÷1/÷2,
DIFFERENTIAL-TO-3.3V LVPECL/ECL CLOCK GENERATOR
GENERAL DESCRIPTION
The ICS87322I is a low skew, ÷1/÷2 Differential-
to-3.3V LVPECL/ECL Clock Generator and a
member of the HiPerClockS family of High Per-
formance Clock Solutions from ICS. Using mul-
tiplexed/redundant clock inputs the ICS87322I
is designed to translate most differential signal levels to
3.3V LVPECL/ECL levels.
The CLK_SEL input selects between CLK0, nCLK0 and
CLK1, nCLK1 as the active input. The divide select inputs,
DIV_SELA, DIV_SELB, DIV_SELC, DIV_SELD, 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 master
reset input can be used to reset the internal dividers and dis-
able the clock outputs. Disabled outputs QAx, QBx, QCx and
QDx will be forced low. Disabled outputs nQAx, nQBx, nQCx
and nQDx will be forced high.
The ICS87322I is characterized across the industrial tempera-
ture range and over the supply voltage range of 3V to 3.8V for
LVPECL and -3V to -3.8V for LVECL. Guaranteed output and
part to part skew characteristics make the ICS87322I an ex-
cellent choice for clock generator and clock distribution appli-
cations demanding well defined performance and repeatability.
FEATURES
15 differential 3.3V LVPECL outputs
Selectable differential clock inputs
CLK0, nCLK0 and CLK1, nCLK1 can accept the following
differential input levels: LVPECL, LVDS, LVHSTL,
HCSL, SSTL
Output frequency: 750MHz (maximum)
Output skew: 180ps (maximum)
Bank skew: 65ps (maximum)
Part-to-part skew: 500ps (maximum)
LVPECL mode operating voltage supply range:
V
CC = 3V to 3.8V, VEE = 0V
ECL mode operating voltage supply range:
V
CC = 0V, VEE = -3V to -3.8V
-40°C to 85°C ambient operating temperature
Pin compatible with the MC100LVE222
HiPerClockS
,&6
PIN ASSIGNMENT
52-Lead TQFP
10mm x 10mm x 1.4mm package body
Y package
Top View
V
CC
MR
DIV_SELA
DIV_SELB
CLK0
nCLK0
CLK_SEL
CLK1
nCLK1
nc
DIV_SELC
DIV_SELD
V
EE
VCCO
nQB2
QB2
nQB1
QB1
nQB0
QB0
VCCO
nQA1
QA1
nQA0
QA0
VCCO
40
41
42
43
44
45
46
47
48
49
50
51
52
1
2
3
4
5
6
7
8
9 10 11 12 13
26
25
24
23
22
21
20
19
18
17
16
15
14
39 38 37 36 35 34 33 32 31 30 29 28 27
QD0
nQD0
QD1
nQD1
QD2
nQD2
QD3
nQD3
QD4
nQD4
QD5
nQD5
VCCO
V
CCO
QC0
nQC0
QC1
nQC1
QC2
nQC2
QC3
nQC3
V
CCO
nc
V
CCO
ICS87322I
6
4
3
2
MR
CLK0
nCLK0
CLK1
nCLK1
CLK_SEL
DIV_SELA
DIV_SELB
DIV_SELC
DIV_SELD
QA0:1
nQA0:1
QB0:2
nQB0:2
QC0:3
nQC0:3
QD0:5
nQD0:5
BLOCK DIAGRAM
0
1
0
1
0
1
0
1
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