Low Skew, 1-to-10 Differential-to-3.3V,
2.5V LVPECL/ECL Fanout Buffer
85310I-11
DATA SHEET
General Description
The 85310I-11 is a low skew, high performance 1-to-10
Differential-to-2.5V/3.3V ECL/LVPECL Fanout Buffer. The CLKx,
nCLKx pairs can accept most standard differential input levels. The
85310I-11 is characterized to operate from either a 2.5V or a 3.3V
power supply. Guaranteed output and part-to-part skew
characteristics make the 85310I-11 ideal for those clock distribution
applications demanding well defined performance and repeatability.
Features
• Ten differential 2.5V, 3.3V LVPECL/ECL output pair
• Two selectable differential input pairs
• Differential CLKx, nCLKx pairs can accept the following interface
levels: LVPECL, LVDS, LVHSTL, SSTL, HCSL
• Maximum output frequency: 700MHz
• Translates any single ended input signal to 3.3V LVPECL levels
with resistor bias on nCLK input
• Output skew: 30ps (typical)
• Part-to-part skew: 140ps (typical)
• Propagation delay: 2ns (typical)
• Additive phase jitter, RMS: <0.13ps (typical)
• LVPECL mode operating voltage supply range:
VCC = 2.375V to 3.8V, VEE = 0V
• ECL mode operating voltage supply range:
VCC = 0V, VEE = -3.8V to -2.375V
• -40°C to 85°C ambient operating temperature
• Available in lead-free RoHS compliant package
Block Diagram
CLK0 Pulldown
nCLK0 Pullup
CLK1 Pulldown
nCLK1 Pullup
0
1
CLK_SEL Pulldown
CLK_EN Pullup D
LE
Q
85310I-11 Rev F 7/8/15
Q0
nQ0
Q1
nQ1
Q2
nQ2
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
Q7
nQ7
Q8
nQ8
Q9
nQ9
Pin Assignment
VCC
CLK_SEL
CLK0
nCLK0
CLK_EN
CLK1
nCLK1
VEE
32 31 30 29 28 27 26 25
1 24
2 23
3 22
4 21
5 20
6 19
7 18
8 17
9 10 11 12 13 14 15 16
Q3
nQ3
Q4
nQ4
Q5
nQ5
Q6
nQ6
85310I-11
32-Lead LQFP
7mm x 7mm x 1.4mm package body
Y Package
Top View
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