Low Phase Noise, Dual 1-to-8, 3.3V,
2.5V LVPECL Output Fanout Buffer
8SLVP2108
Datasheet
General Description
Features
The 8SLVP2108 is a high-performance differential dual 1:8
LVPECL fanout buffer. The device is designed for the fanout of
high-frequency, very low additive phase-noise clock and data
signals. The 8SLVP2108 is characterized to operate from a 3.3V or
2.5V power supply. Guaranteed output-to-output and part-to-part
skew characteristics make the 8SLVP2108 ideal for those clock
distribution applications demanding well-defined performance and
repeatability. Two independent buffers with eight low skew outputs
each are available. The integrated bias voltage references enable
easy interfacing of single-ended signals to the device inputs. The
device is optimized for low power consumption and low additive
phase noise.
• Two 1:8, low skew, low additive jitter LVPECL fanout buffers
• Two differential clock inputs
• Differential PCLKA, nPCLKA and PCLKB, nPCLKB pairs can
accept the following differential input levels: LVDS, LVPECL,
CML
• Differential PCLKA, nPCLKA and PCLKB, nPCLKB 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).
• Maximum input clock frequency: 2GHz
• Output bank skew: 15ps (typical)
• Propagation delay: 390ps (maximum)
• Low additive phase jitter, RMS: 54fs (maximum)
(fREF = 156.25MHz, VPP = 1V, 12kHz – 20MHz, VCC = 3.3V)
• Full 3.3V and 2.5V supply voltage
• Maximum device current consumption (IEE): 143mA
• Available in Lead-free (RoHS 6), 48-Lead VFQFN package
• Supports case temperature 105°C operations
• -40°C to 85°C ambient operating temperature
Block Diagram
QA0
nQA0
QA1
nQA1
V
CC
QA2
nQA2
PCLKA
nPCLKA
Pin Assignment
36 35 34 33 32 31 30 29 28 27 26 25
Voltage
Reference
VCC
37
38
39
40
24 VCC
VREFA
QA7
nQA4
QA4
QB3
nQB3
QB4
23
22
nQA7
QB0
nQB0
21 nQA3
8SLVP2108
nQB4
20
19
18
17
16
QA3
nQA2
QA2
41
42
43
44
45
46
48-lead VFQFN
7mm x 7mm x 0.8mm
package body
QB5
nQB5
QB1
nQB1
QB6
nQB6
QB7
nQA1
QA1
NL Package
Top View
V
CC
QB2
15 nQA0
nQB2
PCLKB
QA0
14
47
48
1
nQB7
VCC
13 VCC
2 3 4 5 6 7 8 9 10 11 12
nPCLKB
Voltage
Reference
VREFB
QB7
nQB7
©2016 Integrated Device Technology, Inc.
1
Revision B, November 21, 2016