ICS8533-11 Datasheet, PDF (1/15 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS8533-11
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8533-11 is a low skew, high performance
,&6
1-to-4 Crystal Oscillator/Differential-to-3.3V
HiPerClockS™ _{LVPECL fanout buffer and a member of the}
HiPerClockS™ family of High Performance Clock
Solutions from ICS. The ICS8533-11 has select-
able differential clock or crystal inputs. The CLK, nCLK pair
can accept most standard differential input levels. The clock
enable is internally synchronized to eliminate runt pulses on
the outputs during asynchronous assertion/deassertion of the
clock enable pin.
Guaranteed output and part-to-part skew characteristics
make the ICS8533-11 ideal for those applications demand-
ing well defined performance and repeatability.
FEATURES
• 4 differential 3.3V LVPECL outputs
• Selectable CLK, nCLK or crystal inputs
• CLK, nCLK pair can accept the following differential input
levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL
• Maximum output frequency up to 650MHz
• Translates any single-ended input signal to 3.3V
LVPECL levels with resistor bias on nCLK input
• Output skew: 30ps (maximum)
• Part-to-part skew: 150ps (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
0
XTAL1
XTAL2
1
CLK_SEL
D
Q
LE
PIN ASSIGNMENT
VEE ₁
20 Q0
CLK_EN _{2 19} nQ0
CLK_SEL ₃
18 VCC
CLK _{4 17} Q1
Q0
nCLK _{5 16} nQ1
nQ0
XTAL1 ₆
15 Q2
XTAL2 ₇
14 nQ2
Q1
nc ₈
13 VCC
nQ1
nc _{9 12} Q3
Q2
VCC _{10 11} nQ3
nQ2
ICS8533-11
Q3
nQ3
20-Lead TSSOP
6.5mm x 4.4mm x 0.92 Package Body
G Package
Top View
8533AG-11
www.icst.com/products/hiperclocks.html
1
REV. D JULY 16, 2001