Low Skew, 1-to-10, Differential-to-2.5V,
3.3V LVPECL/ECL Fanout Buffer
853S111B
General Description
Features
The 853S111B 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
853S111B 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 853S111B 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: 50ps (maximum)
• Part-to-part skew: 150ps (maximum)
• Propagation delay: 645ps (maximum)
• Additive Phase Jitter, RMS: 0.03ps (typical)
• LVPECL mode operating voltage supply range:
Pin Assignments
VCC = 2.375V to 3.8V, VEE = 0V
• ECL mode operating voltage supply range:
VCC = 0V, VEE = -3.8V to -2.375V
24 23 22 21 20 19 18 17
25
VCCO
VCCO
16
15
• -40°C to 85°C ambient operating temperature
• Available lead-free (RoHS 6) packaging
26
nQ2
Q2
Q7
853S111B
nQ7
Q8
27 32-Lead TQFP, E-Pad 14
28
nQ1
Q1
13
7mm x 7mm x 1mm
nQ8
29
30
31
32
12
11
10
9
Block Diagram
package body
Y Package
Top View
nQ0
Q0
Q9
Pulldown
PCLK0
0
1
Pullup/Pulldown
nQ9
VCCO
Q0
nPCLK0
VCCO
nQ0
Pulldown
PCLK1
1
2
3
4
5
6
7
8
Pullup/Pulldown
nPCLK1
Q1
nQ1
Pulldown
CLK_SEL
VBB
Q2
nQ2
nQ3
nQ3
24 23 22 21 20 19 18 17
Q4
25
26
27
VCCO
VCCO
16
15
14
13
12
nQ4
Q5
nQ2
Q2
Q7
853S111B
nQ7
Q8
nQ5
32-Lead VFQFN
28 5mm x 5mm x 0.925mm
nQ1
Q1
Q6
nQ8
29
package body
K Package
nQ6
nQ0
Q0
30
Q9
11
10
9
Q7
Top View
31
nQ9
VCCO
nQ7
VCCO
32
1
2
3
4
5
6
7
8
nQ8
nQ8
Q9
nQ9
©2016 Integrated Device Technology, Inc.
1
Revision F, January 14, 2016