ICS8532-01 Datasheet, PDF (1/13 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-17 DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

Integrated
Circuit
Systems, Inc.
ICS8532-01
LOW SKEW, 1-TO-17
DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER
GENERAL DESCRIPTION
The ICS8532-01 is a low skew, 1-to-17, Differ-
,&6
ential-to-3.3V LVPECL Fanout Buffer and a
HiPerClockS™ _{member of the HiPerClockS™ family of High}
Performance Clock Solutions from ICS. The
ICS8532-01 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 and part-to-part skew characteristics
make the ICS8532-01 ideal for those clock distribution
applications demanding well defined performance and
repeatability.
FEATURES
• 17 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: 2.5ns (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
PCLK
1
nPCLK
CLK_SEL
D
Q
LE
8532AY-01
PIN ASSIGNMENT
Q0 - Q16
nQ0 - nQ16
VCCO
nc
nc
VCC
CLK
nCLK
CLK_SEL
PCLK
nPCLK
VEE
CLK_EN
nc
VCCO
52 51 50 49 48 47 46 45 44 43 42 41 40
1
39
2
38
3
37
4
36
5
35
6
34
7
ICS8532-01
33
8
32
9
31
10
30
11
29
12
28
13
27
14 15 16 17 18 19 20 21 22 23 24 25 26
VCCO
Q6
nQ6
Q7
nQ7
Q8
nQ8
Q9
nQ9
Q10
nQ10
nc
Vcco
52-Lead LQFP
10mm x 10mm x 1.4mm package body
Y package
Top View
www.icst.com/products/hiperclocks.htlm
1
REV. B AUGUST 9, 2001