Integrated
Circuit
Systems, Inc.
ICS85301
2:1
D
IFFERENTIAL
-
TO
-LVPECL M
ULTIPLEXER
F
EATURES
•
2:1 LVPECL MUX
•
One LVPECL output
•
Two differential clock inputs can accept: LVPECL, LVDS,
CML
•
Maximum input/output frequency: 3GHz
•
Translates LVCMOS/LVTTL input signals to LVPECL levels
by using a resistor bias network on nPCLK0, nPCLK0
•
Propagation delay: 490ps (maximum)
•
Part-to-part skew: 150ps (maximum)
•
Additive phase jitter, RMS: 0.009ps (typical)
•
Full 3.3V or 2.5V operating supply
•
-40°C to 85°C ambient operating temperature
•
Available in both standard and lead-free RoHS compliant
packages
G
ENERAL
D
ESCRIPTION
The ICS85301 is a high performance 2:1 Differ-
ential-to-LVPECL Multiplexer and a member of the
HiPerClockS™
HiPerClockS™ family of High Performance Clock
Solutions from ICS. The ICS85301 can also per-
form differential translation because the differ-
ential inputs accept LVPECL, CML as well as LVDS levels.
The ICS85301 is packaged in a small 3mm x 3mm
16 VFQFN package, making it ideal for use on space con-
strained boards.
IC
S
B
LOCK
D
IAGRAM
PCLK0
nPCLK0
PCLK1
nPCLK1
0
Q
nQ
1
P
IN
A
SSIGNMENT
PCLK0 1
nPCLK0 2
PCLK1 3
nPCLK1 4
5
V
BB
16 15 14 13
12
11
10
9
6
CLK_SEL
V
CC
V
EE
V
EE
nc
V
EE
Q
nQ
V
EE
7
nc
8
V
CC
CLK_SEL
V
BB
ICS85301
16-Lead VFQFN
3mm x 3mm x 0.95 package body
K Package
Top View
PCLK0
nPCLK0
PCLK1
nPCLK1
V
BB
CLK_SEL
nc
V
CC
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
nc
V
EE
V
EE
V
CC
V
EE
Q
nQ
V
EE
ICS85301
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
85301AK
www.icst.com/products/hiperclocks.html
1
REV. A JANUARY 16, 2006
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
