Low Skew, 1-to-10,
Differential-to-LVPECL/ECL Fanout Buffer
853S111AI
DATA SHEET
General Description
Features
The 853S111AI is a low skew, high performance 1-to-10
• Ten differential 2.5V, 3.3V LVPECL/ECL outputs
• Two selectable differential input pairs
Differential-to-2.5V/3.3V LVPECL/ECL Fanout Buffer. The
853S111AI 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 853S111AI ideal for those clock distribution
applications demanding well defined performance and repeatability.
• PCLKx, nPCLKx pairs can accept the following
differential input levels: LVPECL, LVDS, SSTL, CML
• Maximum output frequency: 2.5GHz
• Translates any single-ended input signal to 3.3V LVPECL levels
with resistor bias on nPCLK input
• Output skew: 55ps (maximum)
• Part-to-part skew: 250ps (maximum)
• Propagation delay: 780ps (maximum)
• Additive phase jitter, RMS: 0.07ps (typical)
• LVPECL mode operating voltage supply range:
VCC = 2.375V to 3.465V, VEE = 0V
• ECL mode operating voltage supply range:
VCC = 0V, VEE = -3.465V to -2.375V
• -40°C to 85°C ambient operating temperature
• Available lead-free (RoHS 6) package
Block Diagram
Pin Assignment
Pulldown
PCLK0
0
1
Pullup/Pulldown
Q0
nPCLK0
24 23 22 21 20 19 18 17
nQ0
Pulldown
PCLK1
25
26
27
28
29
30
31
32
VCCO
VCCO
16
15
14
13
12
Pullup/Pulldown
nPCLK1
Q1
nQ2
Q2
Q7
nQ1
Pulldown
nQ7
Q8
CLK_SEL
VBB
Q2
nQ1
Q1
nQ2
nQ8
nQ3
nQ3
nQ0
Q0
Q9
11
10
9
nQ9
VCCO
Q4
VCCO
1
2
3
4
5
6
7
8
nQ4
Q5
nQ5
Q6
853S111AI
32-Lead LQFP
nQ6
Q7
7mm x 7mm x 1.4mm package body
Y Package
nQ7
nQ8
nQ8
Top View
Q9
nQ9
853S111AI Rev A 6/30/15
1
©2015 Integrated Device Technology, Inc.