ICS8531-01 Datasheet PDF - ICST
| Part Number | ICS8531-01 | |
| Description | LVPECL FANOUT BUFFER | |
| Manufacturers | ICST | |
| Logo |  |
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Integrated
Circuit
Systems, Inc.
ICS8531-01
LOW SKEW, 1-TO-9
DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8531-01 is a low skew, high performance
,&6 1-to-9 Differential-to-3.3V LVPECL Fanout Buffer
HiPerClockS™ a n d a m e m b e r o f t h e H i P e r C l o c k S ™
family of High Performance Clock Solutions from
ICS. The ICS8531-01 has two selectable clock
inputs. The CLK, nCLK pair can accept most standard
differential input levels. The PCLK, nPCLK pair can accept
LVPECL, CML, or SSTL input levels. The clock enable is
internally synchronized to eliminate runt pulses on the out-
puts during asynchronous assertion/deassertion of the clock
enable pin.
Guaranteed output skew and part-to-part skew characteris-
tics make the ICS8531-01 ideal for high performance work-
station and server applications.
FEATURES
• 9 differential 3.3V LVPECL outputs
• Selectable CLK, nCLK or LVPECL clock inputs
• CLK, nCLK pair can accept the following differential input
levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
• PCLK, nPCLK supports the following input types:
LVPECL, CML, SSTL
• Maximum output frequency up to 500MHz
• Translates any single ended input signal (LVCMOS, LVTTL,
GTL) to 3.3V LVPECL levels with resistor bias on nCLK input
• Output skew: 50ps (maximum)
• Part-to-part skew: 250ps (maximum)
• Propagation delay: 2ns (maximum)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Industrial temperature information available upon request
BLOCK DIAGRAM
CLK_EN
CLK
nCLK
PCLK
nPCLK
CLK_SEL
0
1
D
Q
LE
PIN ASSIGNMENT
32 31 30 29 28 27 26 25
Q0
nQ0
VCC
CLK
1
2
2 4 VCCO
23 Q3
Q1 nCLK 3
22 nQ3
nQ1
CLK_SEL 4
ICS8531-01 21 Q4
Q2 PCLK 5
20 nQ4
nQ2
nPCLK 6
19 Q5
Q3
nQ3
VEE
CLK_EN
7
8
18 nQ5
1 7 VCCO
Q4
nQ4
9 10 11 12 13 14 15 16
Q5
nQ5
32-Lead LQFP
Q6 7mm x 7mm x 1.4mm package body
nQ6 Y package
Q7 Top View
nQ7
Q8
nQ8
8531AY-01
www.icst.com/products/hiperclocks.html
1
REV. B AUGUST 9, 2001
|
| |
 
Integrated
Circuit
Systems, Inc.
ICS8531-01
LOW SKEW, 1-TO-9
DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
TABLE 4D. LVPECL DC CHARACTERISTICS, VCC = VCCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical
IIH
IIL
VPP
VCMR
PCLK
Input High Current
nPCLK
PCLK
Input Low Current
nPCLK
Peak-to-Peak Input Voltage
Common Mode Input Voltage;
NOTE 1, 2
VCC = VIN = 3.465V
V = V = 3.465V
CC IN
VIN = 0V, VCC = 3.465V
VIN = 0V, VCC = 3.465V
-5
-150
0.3
VEE + 1.5
VOH Output High Voltage; NOTE 3
VCCO - 1.4
VOL Output Low Voltage; NOTE 3
VCCO - 2.0
VSWING
Peak-to-Peak Output Voltage Swing
0.6
NOTE 1: Common mode input voltage is defined as VIH.
NOTE 2: For single ended applications, the maximum input voltage for PCLK and nPCLK is VCC + 0.3V.
NOTE 3: Outputs terminated with 50Ω to VCCO - 2V.
Maximum
150
5
1
VCC
VCCO - 1.0
VCCO - 1.7
0.85
Units
µA
µA
µA
µA
V
V
V
V
V
TABLE 5. AC CHARACTERISTICS, VCC = VCCO = 3.3V±5%, TA = 0°C TO 70°C
Symbol Parameter
Test Conditions
Minimum Typical Maximum
fMAX
tPD
tsk(o)
Maximum Output Frequency
Propagation Delay; NOTE 1
Output Skew; NOTE 2, 4
IJ 250MHz
1
500
2
50
tsk(pp) Part-to-Part Skew; NOTE 3, 4
250
tR Output Rise Time
tF Output Fall Time
odc Output Duty Cycle
20% to 80% @ 50MHz
300
700
20% to 80% @ 50MHz
300
700
48 50 52
All parameters measured at 250MHz unless noted otherwise.
NOTE 1: Measured from the differential input crossing point to the differential output crossing point.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions.
Measured at the output differential cross points.
NOTE 3: Defined as skew between outputs on different devices operating at the same supply voltages
and with equal load conditions. Using the same type of inputs on each device, the outputs are measured
at the differential cross points.
NOTE 4: This parameter is defined in accordance with JEDEC Standard 65.
Units
MHz
ns
ps
ps
ps
ps
%
8531AY-01
www.icst.com/products/hiperclocks.html
5
REV. B AUGUST 9, 2001
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Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for ICS8531-01 electronic component. |
| Information | Total 13 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ ICS8531-01.PDF Datasheet ] | |
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