IDT8T33FS314I Datasheet, PDF (1/24 Pages) Integrated Device Technology – Maximum output frequency

Low Skew, 1-to-4 Differential-to-2.5V, 3.3V IDT8T33FS314I
LVPECL/ECL Fanout Buffer
DATA SHEET
General Description
The IDT8T33FS314I 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 IDT8T33FS314I very versatile, in that, it can operate as
both a differential clock buffer as well as a signal-level translator and
fanout buffer.
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.
Features
• 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: 0.114ps (typical) @ 156.25MHz
• Output skew: 50ps (maximum)
• LVPECL and HSTL mode operating voltage supply range:
V_CC = 2.5V±5% or 3.3V±5%, V_EE = 0V
• ECL mode operating voltage supply range:
V_EE = -3.3V±5% or -2.5V±5%, V_CC = 0V
• -40°C to 85°C ambient operating temperature
• Lead-free (RoHS 6) packaging
Block Diagram
V_CC
CLKA ^Pulldown
nCLKA ^{Pullup/Pulldown}
V_CC
V_EE
CLKB ^Pulldown
nCLKB ^{Pullup/Pulldown}
CLK_SEL ^Pulldown
V_EE
0
1
V_EE
Pin Assignment
V_CC 1
20 VCC
Q0
nc 2 19 Q0
nQ0
VCC 3
18 nQ0
CLK_SEL 4 17 Q1
Q1
CLKA 5 16 nQ1
nQ1
nCLKA 6 15 Q2
CLKB 7 14 nQ2
Q2
nCLKB 8 13 Q3
nQ2
V_EE 9
12 nQ3
V_CC 10 11 VCC
Q3
nQ3
IDT8T33FS314I
20-Lead 209-MIL SSOP
5.3mm x 7.2mm x 1.75mm body package
PY Package
Top View
20-Lead TSSOP
4.4mm x 6.5mm x 0.925mm body package
PG Package
Top View
IDT8T33FS314PGI REVISION A MARCH 7, 2014
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©2014 Integrated Device Technology, Inc.