ICS8501BYT View Datasheet(PDF) - Integrated Circuit Systems
Part Name
Description
MFG CO.
'ICS8501BYT' PDF : 11 Pages View PDF
Integrated
Circuit
Systems, Inc.
ICS8501
LOW SKEW, 1-TO-16 DIFFERENTIAL CURRENT MODE
FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8501 is a low skew, 1-to-16 Differential
ICS
Current Mode Fanout Buffer and a member of
HiPerClockS™ the HiPerClockS™ family of High Performance
Clock Solutions from ICS. The ICS8501 is de-
signed to translate any differential signal levels
to small swing differential current mode (DCM) output levels.
An external reference resistor is used to set the value of the
current supplied to an external load load/termination resistor.
The load resistor value is chosen to equal the value of the
characteristic line impedance of 50Ω. The ICS8501 is char-
acterized at an operating supply voltage of 3.3V.
The small swing outputs, accurate crossover voltage and duty
cycle makes the ICS8501 ideal for interfacing to today’s most
advanced microprocessors.
FEATURES
• 16 small swing DCM outputs
• Translates any differential input signal (LVPECL, LVHSTL,
LVDS, DCM) to DCM levels without external bias networks
• Translates single ended input levels to DCM levels with a
resistor bias network on the nCLK input
• Translates single ended input levels to inverted DCM levels
with a resistor bias network on the CLK input
• Maximum output frequency: 500MHz
• Output skew: 100ps (maximum)
• Part-to-part skew: 650ps (maximum)
• VOH: 850mV (maximum)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
BLOCK DIAGRAM
CLK
nCLK
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
8501BY
PIN ASSIGNMENT
Q15
nQ15
Q14
nQ14
Q13
nQ13
Q12
nQ12
Q11
nQ11
Q10
nQ10
Q9
nQ9
Q8
nQ8
VDD
Q11
nQ11
Q10
nQ10
GND
Q9
nQ9
Q8
nQ8
VDD
nc
48 47 46 45 44 43 42 41 40 39 38 37
1
36
2
35
3
34
4
33
5
32
6
7
ICS8501
31
30
8
29
9
28
10
27
11
26
12
25
13 14 15 16 17 18 19 20 21 22 23 24
CLK
VDD
nQ0
Q0
nQ1
Q1
GND
nQ2
Q2
nQ3
Q3
VDD
48-Lead LQFP
7mm x 7mm x 1.4mm body package
Y Package
Top View
www.icst.com/products/hiperclocks.html
1
REV. B OCTOBER 3, 2003
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