Low Phase Noise, Dual 1-to-2, 3.3V,
2.5V LVPECL Output Fanout Buffer
IDT8SLVP2102I
Datasheet
Description
The IDT8SLVP2102I is a high-performance differential LVPECL
fanout buffer. The device is designed for the fanout of high-frequency,
very low additive phase-noise clock and data signals. The
IDT8SLVP2102I 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 IDT8SLVP2102I ideal for those clock
distribution applications demanding well-defined performance and
repeatability.
Two selectable differential inputs and four low skew outputs are
available. The integrated bias voltage reference enables easy
interfacing of single-ended signals to the device inputs. The device is
optimized for low power consumption and low additive phase noise.
Features
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Two low skew, low additive jitter LVPECL output pairs
Two selectable, differential clock input pairs
Differential pairs can accept the following differential input
levels: LVDS, LVPECL, CML
Maximum input clock frequency: 2GHz
Output skew: 5ps (typical)
Propagation delay: 225ps (maximum)
Low additive phase jitter, RMS, f
REF
= 156.25MHz, V
PP
= 1V,
12kHz – 20MHz: 36fs (maximum)
Full 3.3V and 2.5V supply voltage
Maximum device current consumption (I
EE
): 56mA (maximum)
Available in lead-free (RoHS 6), 16-Lead VFQFN package
-40°C to 85°C ambient operating temperature
Supports case temperature
≤105°C
operations
Accepts single-ended LVCMOS levels. See Applications section
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)
Pin Assignment
nQA1
nQA0
QA1
QA0
12 11 10
QB0
13
nQB0
14
QB1
15
nQB1
16
Block Diagram
V
CC
8
7
6
5
1
V
EE
2
nc
3
PCLKB
4
nPCLKB
V
REF
nPCLKA
PCLKA
V
CC
9
PCLKA
nPCLKA
QA0
nQA0
QA1
nQA1
V
CC
IDT8SLVP2102I
16-Lead VFQFN
3.0mm x 3.0mm x 0.925mm package body
NL Package
Top View
PCLKB
nPCLKB
QB0
nQB0
QB1
nQB1
Voltage
Reference
V
REF
©2017 Integrated Device Technology, Inc.
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August 21, 2017
IDT8SLVP2102I Datasheet
Pin Descriptions and Characteristics
Table 1. Pin Descriptions
Number
1
2
3
4
5
6
7
8
9, 10
11, 12
13, 14
15, 16
Name
V
EE
nc
PCLKB
nPCLKB
V
CC
PCLKA
nPCLKA
V
REF
QA0, nQA0
QA1, nQA1
QB0, nQB0
QB1, nQB1
Power
Unused
Input
Input
Power
Input
Input
Output
Output
Output
Output
Output
Pulldown
Pullup/
Pulldown
Pulldown
Pullup/
Pulldown
Type
Description
Negative supply pin.
Do not connect.
Non-inverting differential LVPECL clock/data input.
Inverting differential LVPECL clock/data input. V
CC
/2 default when left
floating.
Power supply pins.
Non-inverting differential LVPECL clock/data input.
Inverting differential LVPECL clock/data input. V
CC
/2 default when left
floating.
Bias voltage reference for the PCLK, nPCLK inputs.
Differential output pair A0. LVPECL interface levels.
Differential output pair A1. LVPECL interface levels.
Differential output pair B0. LVPECL interface levels.
Differential output pair B1. LVPECL interface levels.
NOTE:
Pulldown
and
Pullup
refers to an internal input resistors. See Table 2,
Pin Characteristics,
for typical values.
Table 2. Pin Characteristics
Symbol
C
IN
R
PULLDOWN
R
PULLUP
Parameter
Input Capacitance
Input Pulldown Resistor
Input Pullup Resistor
Test Conditions
Minimum
Typical
2
51
51
Maximum
Units
pF
k
k
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IDT8SLVP2102I Datasheet
Absolute Maximum Ratings
NOTE: Stresses beyond those listed under
Absolute Maximum Ratings
may cause permanent damage to the device. These ratings are stress
specifications only. Functional operation of the product at these conditions or any conditions beyond those listed in the
DC Characteristics or
AC Characteristics
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.
Item
Supply Voltage, V
CC
Inputs, V
I
Outputs, I
O
Continuous Current
Surge Current
Input Sink/Source, I
REF
Maximum Junction Temperature, T
J,MAX
Storage Temperature, T
STG
ESD - Human Body Model (NOTE 1)
ESD - Charged Device Model (NOTE 1)
NOTE 1: According to JEDEC/JESD 22-A114/22-C101.
Rating
3.63V
-0.5V to V
CC
+ 0.5V
50mA
100mA
±2mA
125°C
-65°C to 150°C
2000V
1500V
DC Electrical Characteristics
Table 3A. Power Supply DC Characteristics,
V
CC
= 3.3V ± 5%, V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
V
CC
I
EE
I
CC
Parameter
Power Supply Voltage
Power Supply Current
Power Supply Current
QA[0:1] and QB[0:1]
terminated 50W ± 1% to V
CC
– 2V
Test Conditions
Minimum
3.135
Typical
3.3
Maximum
3.465
56
180
Units
V
mA
mA
Table 3B. Power Supply DC Characteristics,
V
CC
= 2.5V ± 5%, V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
V
CC
I
EE
I
CC
Parameter
Power Supply Voltage
Power Supply Current
Power Supply Current
QA[0:1] and QB[0:1]
terminated 50W ± 1% to V
CC
– 2V
Test Conditions
Minimum
2.375
Typical
2.5
Maximum
2.625
50
180
Units
V
mA
mA
©2017 Integrated Device Technology, Inc.
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IDT8SLVP2102I Datasheet
Table 3C. LVPECL DC Characteristics,
V
CC
= 3.3V ± 5%, V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
I
IH
Parameter
Input
High
Current
Input
Low
Current
PCLKA, nPCLKA;
PCLKB, nPCLKB
PCLKA, PCLKB
nPCLKA, nPCLKB
Test Conditions
V
CC
= V
IN
= 3.465V
V
CC
= 3.465V, V
IN
= 0V
V
CC
= 3.465V, V
IN
= 0V
I
REF
= 2mA
-10
-150
V
CC
– 1.6
V
CC
– 1.1
V
CC
– 2.0
V
CC
– 1.3
V
CC
– 0.9
V
CC
– 1.5
V
CC
– 1.1
V
CC
– 0.8
V
CC
– 1.4
Minimum
Typical
Maximum
150
Units
μA
μA
μA
V
V
V
I
IL
V
REF
V
OH
V
OL
Reference Voltage for Input
Bias
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
NOTE 1: Outputs terminated with 50 to V
CC
– 2V.
Table 3D. LVPECL DC Characteristics,
V
CC
= 2.5V ± 5%, V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
I
IH
Parameter
Input
High
Current
Input
Low
Current
PCLKA, nPCLKA;
PCLKB, nPCLKB
PCLKA, PCLKB
nPCLKA, nPCLKB
Test Conditions
V
CC
= V
IN
= 2.625V
V
CC
= 2.625V, V
IN
= 0V
V
CC
= 2.625V, V
IN
= 0V
I
REF
= 2mA
-10
-150
V
CC
– 1.6
V
CC
– 1.1
V
CC
– 2.0
V
CC
– 1.3
V
CC
– 0.9
V
CC
– 1.5
V
CC
– 1.1
V
CC
– 0.8
V
CC
– 1.4
Minimum
Typical
Maximum
150
Units
μA
μA
μA
V
V
V
I
IL
V
REF
V
OH
V
OL
Reference Voltage for Input
Bias
Output High Voltage; NOTE 1
Output Low Voltage; NOTE 1
NOTE 1: Outputs terminated with 50 to V
CC
– 2V.
©2017 Integrated Device Technology, Inc.
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IDT8SLVP2102I Datasheet
AC Electrical Characteristics
Table 4A. AC Electrical Characteristics,
V
CC
= 3.3V ± 5% or 2.5V ± 5%, V
EE
= 0V, T
A
= -40°C to 85°C
Symbol
f
REF
Parameter
Input
Frequency
PCLKA,
nPCLKA;
PCLKB,
nPCLKB
PCLKA,
nPCLKA;
PCLKB,
nPCLKB
PCLKA, nPCLKA to any
QAx, nQAx or PCLKB, nPCLKB to any
QBx, nQBx for V
PP
= 0.1V or 0.3V
1.5
Test Conditions
Minimum
Typical
Maximum
2
Units
GHz
V/t
Input
Edge Rate
V/ns
t
PD
tsk(o)
tsk(b)
tsk(p)
tsk(pp)
Propagation Delay;
NOTE 1
Output Skew; NOTE 2, 3
Bank Skew; NOTE 3, 4
Pulse Skew
Part-to-Part Skew;
NOTE 3, 5
40
135
5
3
225
15
10
25
175
ps
ps
ps
ps
ps
f
REF
= 100MHz
10
100
t
JIT, SP
Spurious Suppression,
Coupling from QA0 to
QB0
f
QB0
= 500MHz, V
PP(PCLKB)
= 0.15V,
V
CMR(PCLKB)
= 1V and
f
QA0
= 62.5MHz, V
PP(PCLKA)
= 1V,
V
CMR(PCLKA)
= 1V
f
QB0
= 500MHz, V
PP(PCLKB)
= 0.15V,
V
CMR(PCLKB)
= 1V and
f
QA0
= 15.625MHz, V
PP(PCLKA)
= 1V,
V
CMR(PCLKA)
= 1V
f
REF
= 122.88MHz
20% to 80%
f
REF
< 1.5GHz
f
REF
> 1.5GHz
25
0.1
0.2
1.0
V
CC
= 3.3V, f
REF
2GHz
V
CC
= 2.5V, f
REF
2GHz
V
CC
= 3.3V, f
REF
2GHz
V
CC
= 2.5V, f
REF
2GHz
0.40
0.35
0.80
0.70
-58
dB
-70
65
90
140
1.5
1.5
V
CC
– 0.6
0.60
0.55
1.2
1.1
1.0
1.0
20
2.0
dB
dB
ps
V
V
V
V
V
V
V
Channel_
ISOL
Channel Isolation
t
R
/ t
F
V
PP
V
CMR
V
O
(pp)
V
DIFF_OUT
Output Rise/ Fall Time
Peak-to-Peak Input
Voltage; NOTE 6, 8
Common Mode Input
Voltage; NOTE 6, 7, 8
Output Voltage Swing,
Peak-to-Peak
Differential Output
Voltage Swing,
Peak-to-Peak
NOTE: Electrical parameters are guaranteed over the specified ambient operating temperature range, which is established when the device is
mounted in a test socket with maintained transverse airflow greater than 500 lfpm. The device will meet specifications after thermal equilibrium
has been reached under these conditions.
NOTE 1: Measured from the differential input crossing point to the differential output crosspoint.
NOTE 2: Defined as skew between outputs at the same supply voltage and with equal load conditions. Measured at the differential crosspoints.
NOTE 3: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 4: Defined as skew within a bank with equal load conditions. Measured at the differential crosspoints.
NOTE 5: Defined as skew between outputs on different devices operating at the same supply voltage, same frequency, same temperature and
with equal load conditions. Using the same type of inputs on each device, the outputs are measured at the differential crosspoints.
NOTE 6: V
IL
should not be less than -0.3V. V
IH
should not be higher than V
CC
.
NOTE 7: Common mode input voltage is defined at the crosspoint.
NOTE 8: For single-ended LVCMOS input applications, please refer to the Applications Information, Wiring the Differential Input to accept
single-ended levels, Figures 1A and 1B.
©2017 Integrated Device Technology, Inc.
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August 21, 2017
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