Low Skew, 1-to-4 Differential-to-2.5V,
3.3V LVPECL/ECL Fanout Buffer
ICS853S314I
Product Discontinuance Notice – Last Time Buy Expires on (1/31/2014)
DATA SHEET
GENERAL DESCRIPTION
FEATURES
The ICS853S314I is a low skew 1-to-4 Differential Fanout Buffer,
designed with clock distribution in mind, accepting two clock
sources into an input MUX.The MUX is controlled by a CLK_SEL
pin. This makes the ICS853S314I very versatile, in that, it can
operate as both a differential clock buffer as well as a signal-
level translator and fanout buffer.
• Four differential ECL/LVPECL level outputs
• One differential ECL/LVPECL or single-ended input (CLKA)
One differential HSTL or single-ended input (CLKB)
• Maximum output frequency: 2.7GHz
• Additive phase jitter, RMS: 0.138ps (typical) @ 156.25MHz,
• Output skew: 50ps (maximum)
The device is designed on a SiGe process and can operate at
frequencies in excess of 2.7GHz. This ensures negligible jitter
introduction to the timing budget which makes it an ideal choice
for distributing high frequency, high precision clocks across
back planes and boards in communication systems. Internal
temperature compensation guarantees consistent performance
across various platforms.
• Part-to-part skew: 150ps (maximum)
• LVPECL and HSTL mode operating voltage supply range:
VCC = 2.5V 5ꢀ or 3.3V 5ꢀ, VEE = 0V
ECL mode operating voltage supply range:
VEE = -3.3V 5ꢀ or -2.5V 5ꢀ, VCC = 0V
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
• Use replacement part: 8T33FS314
BLOCK DIAGRAM
PIN ASSIGNMENT
VCC
1
2
20
19
V
CC
Q0
V
Q0
nQ0
CC
nc
CLKA
3
4
18
17
nQ0
Q1
V
CC
nCLKA
CLK_SEL
Q1
nQ1
5
6
7
16
15
14
13
12
11
nQ1
Q2
nQ2
Q3
CLKA
nCLKA
CLKB
0
VCC
VEE
Q2
nQ2
1
8
nCLKB
CLKB
9
10
nQ3
V
V
EE
nCLKB
Q3
V
CC
CC
nQ3
VEE
CLK_SEL
ICS853S314I
20-Lead, 209-MIL SSOP
5.30mm x 7.20mm x 1.75mm body package
F Package
VEE
Top View
20-Lead TSSOP
4.4mm x 6.5mm x 0.925mm body package
G Package
Top View
ICS853S314AFI REVISION B OCTOBER 4, 2013
1
©2013 Integrated Device Technology, Inc.