ICS854S14I Datasheet, PDF (1/14 Pages) Integrated Device Technology – LOW SKEW, 1-TO-4 DIFFERENTIAL-TOLVDS FANOUT BUFFER

PRELIMINARY
LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-
LVDS FANOUT BUFFER
GENERAL DESCRIPTION
The ICS854S14I is a high speed 1-to-4 Differential-
ICS
to-LVDS Fanout Buffer and is a member of the
HiPerClockS™ _{HiPerClockS™ family of high performance clock}
solutions from IDT. The ICS854S14I 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 LVPECL, LVDS, and
SSTL to be easily interfaced to the input with minimal use of
external components. The device also has output enable pins
which may be useful for system test and debug purposes.
APPLICATIONS:
• Processor clock distribution
• 622MHz central office clock distribution
• High speed network routing
• Wireless basestations
• Serdes LVPECL output to FPGA LVDS input translator
• Fibre channel clock distribution
• AMC clock driver for ATCA systems
• Gigabit ethernet clock distibution
ICS854S14I
FEATURES
• Four differential LVDS outputs
• IN, nIN pair can accept the following differential input levels:
LVPECL, LVDS, SSTL
•
50Ω
internal
input
termination
to
V
T
• Output frequency: 1.5GHz
• Output skew: 30ps (typical)
• Part-to-part skew: TBD
• Additive phase jitter, RMS: 0.135ps (typical)
• Propagation delay: 1.1ns (typical)
• 2.5V operating supply
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
BLOCK DIAGRAM
PIN ASSIGNMENT
OE0
OE1
IN
50Ω
V_T
50Ω
nIN
OE2
V_{REF_AC}
OE3
Q0
24 23 22 21 20 19
nQ0
GND 1
18 VDD
Q0 2
17 Q3
nQ0 3
16 nQ3
Q1
nQ1 4
15 nQ2
nQ1
Q1 5
14 Q2
VDD 6
13 GND
7 8 9 10 11 12
Q2
nQ2
ICS854S14I
Q3
24-Lead VFQFN
4mm x 4mm x 0.95 package body
nQ3
K Package
Top View
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization
and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.
IDT^™ / ICS^™ LVDS FANOUT BUFFER
1
ICS854S14AKI REV. A FEBRUARY 23, 2007