Low Phase Noise, 1-to-12, 3.3V, 2.5V
LVPECL Output Fanout Buffer
8SLVP1212
DATASHEET
Description
Features
The 8SLVP1212 is a high-performance, 12 output differential
LVPECL fanout buffer. The device is designed for the fanout of
high-frequency, very low additive phase-noise clock and datasignals.
The 8SLVP1212 is characterized to operate from a 3.3V and 2.5V
power supply. Guaranteed output-to-output and part-to-part skew
characteristics make the 8SLVP1212 ideal for those clock distribution
applications demanding well-defined performance and repeatability.
Two selectable differential inputs and twelve low skew outputs are
available. The integrated bias voltage generators enables easy
interfacing of single-ended signals to the device inputs. The device is
optimized for low power consumption and low additive phase noise.
• Twelve low skew, low additive jitter LVPECL outputs
• Two selectable, differential clock inputs
• Differential pairs can accept the following differential input
levels: LVDS, LVPECL, CML
• Maximum input clock frequency: 2GHz
• LVCMOS interface levels for the control input (input select)
• Output skew: 33ps (maximum)
• Propagation delay: 550ps (maximum)
• Low additive phase jitter, RMS at fREF = 156.25MHz, VPP = 1V,
12kHz–20MHz: 60fs (maximum)
• Full 3.3V and 2.5V supply voltage
• Device current consumption (IEE): 131mA (maximum)
• Available in Lead-free (RoHS 6), 40-VFQFPN package
• -40°C to +85°C ambient operating temperature
• Differential PCLK0, nPCLK0 and PCLK1, nPCLK1 pairs can also
accept single-ended LVCMOS levels. See Applications section
Wiring the Differential Input Levels to Accept Single-ended Levels
(Figure 1A and Figure 1B)
Block Diagram
Q0
nQ0
• Supports PCI Express Gen1–5
Q1
nQ1
Pin Assignment
Q2
nQ2
V
CC
Q3
nQ3
30 29 28 27 26 25 24 23 22 21
PCLK0
nPCLK0
V
31
20
V
CC
CC
Q4
Q8 32
nQ8 33
Q9 34
nQ9 35
Q10 36
nQ10 37
Q11 38
nQ11 39
19 nQ3
18 Q3
17 nQ2
16 Q2
15 nQ1
14 Q1
13 nQ0
12 Q0
nQ4
Q5
nQ5
fREF
V
Q6
nQ6
CC
Q7
nQ7
PCLK1
nPCLK1
V
40
11
V
CC
CC
1
2
3
4
5
6
7 8 9 10
Q8
nQ8
Q9
nQ9
SEL
Q10
8SLVP1212
40-VFQFPN
6 x 6 x 0.9 mm package body,
Top View
nQ10
Voltage
Reference
VREF
Q11
nQ11
R31DS0036EU0300 MAY 20, 2021
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