PI6C5913004
3 GHz 1:4 LVPECL Fanout Buffer
Features
ÎÎ
Clock Frequency up to 3 GHz
ÎÎ
pairs of differential LVPECL outputs
4
ÎÎ
Low additive jitter, < 0.02ps (max)
ÎÎ
Inputs accept: LVPECL, LVDS, CML, LVCMOS input level
ÎÎ
Pin Selectable inputs
ÎÎ
Output to Output skew: <20ps
ÎÎ
Operating Temperature: -40
o
C to 85
o
C
ÎÎ
Power supply: 3.3V ±10% or 2.5V ±5%
ÎÎ
Packaging (Pb-free & Green)
ÎÎ
16-pin
Description
The PI6C5913004 is a high-performance low-skew 1-to-4 LVPECL
fanout buffer. The pin selectable inputs accept LVPECL, LVDS,
CML and SSTL signals. PI6C5913004 is ideal for clock distribu-
tion applications such as providing fanout for low noise Pericom
oscillators.
TQFN available
Block Diagram
Pin Configuration
Q0+
Q0-
REF_IN0+
REF_IN0-
REF_IN1+
REF_IN1-
0
Q1+
Q1-
Q2+
Q2-
1
GND
REF_SEL
REF_IN1+
REF_IN1-
Q3-
Q3+
Q2-
Q2+
1
2
3
4
V
REF_AC
Output
Bias Gen
Q3+
Q3-
16-0092
1
REF_IN0+
PI6C5913004 Rev B
REF_IN0-
V
REF_AC
V
DD
REF_SEL
Pulldown
16 15 14 13
12
11
10
9
5 6 7 8
Q1-
Q1+
Q0-
Q0+
4/27/2016
PI6C5913004
3 GHz 1:4 LVPECL Fanout Buffer
Pin Description
Pin #
1
2
3
4
5
6
7
8
9, 10
11, 12
13, 14
15, 16
Name
GND
REF SEL
REF_IN1+
REF_IN1-
V
DD
REF_IN0+
REF_IN0-
VREF_AC
Q0+, Q0-
Q1+, Q1-
Q2+, Q2-
Q3+, Q3-
Type
Power
Input
Input
Input
Power
Input
Input
Output
Output
Output
Output
Output
Description
Ground
Input reference selection
Differential IN positive input, AC and DC coupled
Differential IN negative input, AC and DC coupled
Core Power Supply
Differential IN positive input, AC and DC coupled
Differential IN negative input, AC and DC coupled
Reference Voltage: Biased to VDD-1.4V. Used when AC coupling inputs
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Differential output pair, LVPECL interface level.
Input Selection
REF_SEL
0 (default)
1
Input Selected
REF_IN0
REF_IN1
16-0092
2
PI6C5913004 Rev B
4/27/2016
PI6C5913004
3 GHz 1:4 LVPECL Fanout Buffer
Maximum Ratings
(Over operating free-air temperature range)
Storage Temperature.............................................. -65ºC to+155ºC
Operating Temperature ..........................................-40ºC to+85ºC
Supply Voltage, V
DD
.................................................. -0.5 to +4.6V
Inputs
.............................................. -0.5V to V
DD
+ 0.5V
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This
is a stress rating only and functional operation of the device
at these or any other conditions above those indicated in
the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
ESD Protection (HBM) ......................................................... 2000V
DC Electrical Characteristics
Symbol
V
DD
T
A
I
DD
V
REF-AC
Parameter
Supply Voltage
Ambient Temperature
Supply Current
Output Reference Voltage
Conditions
Min
3.0
2.375
-40
Typ
Max
3.6
2.625
85
150
Units
V
V
o
C
No load, max V
DD
V
DD
-1.5
V
DD
-1.3
mA
V
V
DD
-1.15
LVCMOS/LVTTL DC Characteristics
(TA = -40
o
C to +85
o
C, V
DD
= 2.5V ±5% to 3.3V ±10%)
Symbol
V
IH
V
IL
I
IH
I
IL
Parameter
Input High Voltage
Input Low Voltage
Input High Current
Input Low Current
Conditions
REF SEL
REF SEL
REF SEL
REF SEL
Min
2.2
0
-125
-300
Typ
Max
V
DD
0.8
Units
V
μA
μA
150
180
Differential Input DC Characteristics
(TA = -40
o
C to +85
o
C, V
DD
= 2.5V ±5% to 3.3V ±10%)
Symbol
V
IH
V
IL
I
IH
I
IL
V
IN
V
DIFF_IN
16-0092
Parameter
Input High Voltage
Input Low Voltage
Conditions
3.3V REF_IN0, REF_IN1
2.5V REF_IN0, REF_IN1
3.3V REF_IN0, REF_IN1
2.5V REF_IN0, REF_IN1
REF_IN0, REF_IN1, V
IN
=1.7V
REF_IN0, REF_IN1, V
IN
= 0.1V
Min
1.65
1.25
0.4
0.4
Typ
Max
V
DD
-0.9
V
DD
-0.9
V
IH
-0.1
V
IH
-0.1
150
Units
V
V
V
V
μA
μA
Input High Current
Input Low Current
Input Voltage Swing
Differential Input Swing
-150
0.1
0.2
1.7
V
V
3
PI6C5913004 Rev B
4/27/2016
PI6C5913004
3 GHz 1:4 LVPECL Fanout Buffer
LVPECL DC Characteristics
(T
A
= -40
o
C to +85
o
C, V
DD
= 3.3V ±10%, 2.5V ±5% )
Symbol
V
OH
Parameter
Output High Voltage
Conditions
V
DD
= 3.3V ± 10%
V
DD
= 2.5V ± 5%
V
DD
= 3.3V ± 10%
V
DD
= 2.5V ± 5%
Min
V
DD
-1.4
V
DD
- 1.3
V
DD
-2.1
V
DD
-1.9
600
1200
Typ
V
DD
-1.145
V
DD
-0.95
V
DD
-1.945
V
DD
-1.6
800
1600
Max
V
DD
-0.76
V
DD
-0.8
V
DD
-1.6
V
DD
-1.4
Units
V
V
V
V
mV
mV
V
OL
V
OUT
Output Low Voltage
Output Voltage Swing
V
DIFF_OUT
Differential Output Voltage Swing
AC Characteristics
(TA = -40
o
C to +85
o
C, VDD = 3.3V ±10%, 2.5V ±5%)
Symbol
f
max
t
pd
T
sk
t
r
/t
f
t
odc
t
j
Notes:
1. Measured from the differential input to the differential output crossing point
2. Defined as skew between outputs at the same supply voltage and with equal loads. Measured at the output differential crossing point
Parameter
Output Frequency
Propagation Delay
(1)
Output-to-output Skew
(2)
Device to Device skew
Output Rise/Fall time
Output duty cycle
Buffer additive jitter RMS
Conditions
Min
Typ
3
Max
500
20
200
Units
GHz
ps
ps
ps
ps
%
fs
20% - 80%
LVPECL Input, f ≤ 3 GHz
50% input Duty cycle,
156.25MHz with 12KHz to
20MHz integration range
20
47
7
80
53
20
Thermal Information
Symbol
Θ
JA
Θ
JC
Description
Junction-to-ambient thermal resistance
Junction-to-case thermal resistance
4
57.7 °C/W
32.2 °C/W
16-0092
PI6C5913004 Rev B
4/27/2016
PI6C5913004
3 GHz 1:4 LVPECL Fanout Buffer
Phase Noise Plots
Configuration Test Load Board Termination for LVPECL Outputs
LVPECL Buffer
V
DD
Z o = 50
L = 0 ~ 10 in.
100
Z o = 50
150
150
16-0092
5
PI6C5913004 Rev B
4/27/2016
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