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ICS8520 Datasheet(PDF) 1 Page - Integrated Circuit Systems

Part No. ICS8520
Description  LOW SKEW, 1-TO-16 DIFFERENTIAL-TO-3.3V LVHSTL FANOUT BUFFER
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Maker  ICST [Integrated Circuit Systems]
Homepage  http://www.icst.com
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ICS8520 Datasheet(HTML) 1 Page - Integrated Circuit Systems

   
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ICS8520DY
www.icst.com/products/hiperclocks.html
REV. B JULY 5, 2001
1
PRELIMINARY
Integrated
Circuit
Systems, Inc.
ICS8520
LOW SKEW, 1-TO-16
DIFFERENTIAL-TO-3.3V LVHSTL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8520 is a low skew, high performance
1-to-16 Differential-to-3.3V LVHSTL Fanout Buffer
and a member of the HiPerClockS™ family of
High Performance Clock Solutions from ICS. The
ICS8520 has 1 clock input pair. The CLK, nCLK
pair can accept most standard differential input levels.
Guaranteed output skew, part-to-part skew and crossover
voltage characteristics make the ICS8520 ideal for interfac-
ing to today’s most advanced microprocessor and static
RAMs.
FEATURES
• 16 differential 3.3V LVHSTL outputs each with the ability to
drive 50
Ω to ground
• 1 differential CLK, nCLK input pair
• CLK, nCLK pair can accept the following differential input
levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
• Maximum output frequency up to 500MHz
• Translates single ended input levels to LVHSTL levels with
resistor bias nCLK input
• Output skew: 50ps (maximum)
• Part-to-part skew: 250ps (maximum)
• Propagation delay: 1.6ns (maximum)
• VOH: 1.2V (maximum)
• 40% of VOH
≤ Vcrossover ≤ 60% of VOH
• 3.3V core, 1.8V output operating supply voltages
• 0°C to 70°C ambient operating temperature
BLOCK DIAGRAM
PIN ASSIGNMENT
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
VCCO
Q11
nQ11
Q10
nQ10
GND
Q9
nQ9
Q8
nQ8
VCCO
VCC
CLK
VCCO
nQ0
Q0
nQ1
Q1
GND
nQ2
Q2
nQ3
Q3
VCCO
ICS8520
48-Lead LQFP
7mm x 7mm x 1.4mm body package
Y Package
Top View
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.
HiPerClockS™
,&6
CLK
nCLK
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
Q15
nQ15
Q14
nQ14
Q13
nQ13
Q12
nQ12
Q11
nQ11
Q10
nQ10
Q9
nQ9
Q8
nQ8


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