ICS858020 Datasheet, PDF (1/14 Pages) Integrated Device Technology – LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-CML FANOUT BUFFER

ICS858020
LOW SKEW, 1-TO-4
DIFFERENTIAL-TO-CML FANOUT BUFFER
GENERAL DESCRIPTION
The ICS858020 is a high speed 1-to-4 Differential-
ICS
to-CML Fanout Buffer and is a member of the
HiPerClockS™ _{HiPerClockS™family of high performance clock}
solutions from ICS. The ICS858020 is optimized
for high speed and very low output skew, making
it suitable for use in demanding applications such as SONET,
1 Gigabit and 10 Gigabit Ethernet, and Fibre Channel. The
internally terminated differential input and VREF_AC pin allow
other differential signal families such as LVDS, LVHSTL and
CML to be easily interfaced to the input with minimal use of
external components. The ICS858020 is packaged in a small
3mm x 3mm 16-pin VFQFN package which makes it ideal for
use in space-constrained applications.
FEATURES
• Four differential CML outputs
• One LVPECL differential clock input
• IN, nIN pair can accept the following differential input
levels: LVPECL, LVDS, CML, SSTL
• Maximum output frequency: 3.2GHz
• Output skew: 30ps (maximum)
• Part-to-part skew: 225ps (maximum)
• Additive phase jitter, RMS: <0.03ps (typical)
• Propagation delay: 600ps (maximum)
• Operating voltage supply range:
V_CC = 2.375V to 3.63V, V_EE = 0V
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS5) and lead-free (RoHS 6)
packages
BLOCK DIAGRAM
IN
V_T
nIN
V
REF_AC
858020AK
PIN ASSIGNMENT
Q0
nQ0
16 15 14 13
IN 1
12 Q1
VT 2
11 nQ1
VREF_AC 3
10 Q2
nIN 4
9 nQ2
5678
Q1
nQ1
ICS858020
Q2
16-Lead VFQFN
nQ2
3mm x 3mm x 0.95 package body
K Package
Top View
Q3
nQ3
1
REV. A DECEMBER 10, 2007