参数资料
型号: ICS83947AYLFT
元件分类: 时钟及定时
英文描述: LOW SKEW CLOCK DRIVER, 9 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封装: 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32
文件页数: 1/9页
文件大小: 129K
代理商: ICS83947AYLFT
83947AY
http://www.icst.com/products/hiperclocks.html
REV. A JANUARY 7, 2002
1
PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS83947
LOW SKEW, 1-TO-9
LVCMOS FANOUT BUFFER
GENERAL DESCRIPTION
The ICS83947 is a low skew, 1-to-9 LVCMOS
Fanout Buffer and a member of the HiPerClockS
family of High Performance Clock Solutions from
ICS. The low impedance LVCMOS outputs are
designed to drive 50
series or parallel termi-
nated transmission lines. The effective fanout can be increased
from 9 to 18 by utilizing the ability of the outputs to drive two
series terminated lines.
Guaranteed output and part-to-part skew characteristics
make the ICS83947 ideal for high performance, single ended
applications that also require a limited output voltage.
BLOCK DIAGRAM
PIN ASSIGNMENT
FEATURES
9 LVCMOS outputs
Selectable CLK0 and CLK1 can accept the following input
levels: LVCMOS and LVTTL
Maximum output frequency: 250MHz
Output skew: 500ps (maximum)
Part-to-part skew: 2ns (maximum)
3.3V operating supply
0°C to 70°C ambient operating temperature
Industrial temperature information available upon request
Pin compatible with the MPC947
HiPerClockS
,&6
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
GND
Q3
VDDO
Q4
GND
Q5
VDDO
GND
CLK_SEL
CLK0
CLK1
CLK_EN
OE
VDD
GND
Q6
V
DDO
Q7
GND
Q8
V
DDO
GND
Q2
V
DDO
Q1
GND
Q0
V
DDO
GND
ICS83947
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
CLK0
CLK1
0
1
CLK_EN
CLK_SEL
D
Q
LE
OE
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
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