19-2078; Rev 2; 10/02
1:10 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
General Description
The MAX9311/MAX9313 are low-skew, 1-to-10 differen-
tial drivers designed for clock and data distribution.
These devices allow selection between two inputs. The
selected input is reproduced at 10 differential outputs.
The differential inputs can be adapted to accept single-
ended inputs by connecting the on-chip V
BB
supply to
one input as a reference voltage.
The MAX9311/MAX9313 feature low part-to-part skew
(30ps) and output-to-output skew (12ps), making them
ideal for clock and data distribution across a backplane
or a board. For interfacing to differential HSTL and
LVPECL signals, these devices operate over a +2.25V
to +3.8V supply range, allowing high-performance clock
or data distribution in systems with a nominal +2.5V or
+3.3V supply. For differential LVECL operation, these
devices operate from a -2.25V to -3.8V supply.
The MAX9311 features an on-chip V
BB
reference output
of 1.425V below the positive supply voltage. The
MAX9313 offers an on-chip V
BB
reference output of
1.32V below the positive supply voltage.
Both devices are offered in space-saving, 32-pin 5mm
✕
5mm TQFP, 5mm x 5mm QFN, and industry-standard
32-pin 7mm x 7mm LQFP packages.
Features
o
+2.25V to +3.8V Differential HSTL/LVPECL
Operation
o
-2.25V to -3.8V LVECL Operation
o
30ps (typ) Part-to-Part Skew
o
12ps (typ) Output-to-Output Skew
o
312ps (typ) Propagation Delay
o
≥
300mV Differential Output at 3GHz
o
On-Chip Reference for Single-Ended Inputs
o
Output Low with Open Input
o
Pin Compatible with MC100LVEP111 (MAX9311)
and MC100EP111 (MAX9313)
o
Offered in Tiny QFN* Package (70% Smaller
Footprint than LQFP)
MAX9311/MAX9313
Ordering Information
PART
MAX9311ECJ
MAX9311EGJ*
MAX9311EHJ*
MAX9313ECJ
MAX9313EGJ*
MAX9313EHJ*
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
32 LQFP (7mm
✕
7mm)
32 QFN (5mm
✕
5mm)
32 TQFP (5mm
✕
5mm)
32 LQFP (7mm
✕
7mm)
32 QFN (5mm
✕
5mm)
32 TQFP (5mm
✕
5mm)
Applications
Precision Clock Distribution
Low-Jitter Data Repeater
*Future product—contact factory for availability.
Pin Configuration
TOP VIEW
V
CC
Q0
32
31
Q0
30
Q1
29
Q1
28
Q2
27
Q2
26
V
CC
25
V
CC
CLKSEL
CLK0
CLK0
V
BB
CLK1
CLK1
V
EE
1
2
3
4
5
6
7
8
9
10
11
Q9
12
Q8
13
Q8
14
Q7
15
Q7
16
V
CC
24
Q3
23
Q3
22
Q4
21
Q4
LQFP (7mm
×
7mm), TQFP (5mm
×
5mm),
QFN (NO LEADS EXTENDING FROM QFN PACKAGE)
MAX9311/MAX9313
CLKSEL
0
19
Q5
18
Q6
17
Q6
1
CLK0, CLK0 CLK1, CLK1
ON
OFF
OFF
ON
MAX9311
MAX9313
20
Q5
V
CC
Q9
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1:10 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
MAX9311/MAX9313
ABSOLUTE MAXIMUM RATINGS
V
CC
- V
EE
...............................................................................4.1V
Inputs (CLK_,
CLK_,
CLKSEL)..............V
EE
- 0.3V to V
CC
+ 0.3V
CLK_ to
CLK_
....................................................................±3.0V
Continuous Output Current .................................................50mA
Surge Output Current........................................................100mA
V
BB
Sink/Source Current ...............................................±0.65mA
Junction-to-Ambient Thermal Resistance in Still Air
7mm x 7mm LQFP .....................................................+90°C/W
Junction-to-Ambient Thermal Resistance with
500 LFPM Airflow
7mm x 7mm LQFP .....................................................+60°C/W
Junction-to-Case Thermal Resistance
7mm x 7mm LQFP .....................................................+12°C/W
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
ESD Protection
Human Body Model (CLKSEL, CLK_,
CLK_,
Q_,
Q_,
V
BB
).......................................................................2kV
Soldering Temperature (10s) ...........................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(V
CC
- V
EE
= +2.25V to +3.8V, outputs loaded with 50Ω ±1% to V
CC
- 2V, CLKSEL = high or low, unless otherwise noted.) (Notes 1–4)
PARAMETER
SYMBOL
CONDITIONS
-40°C
MIN
V
CC
- 1.23
V
CC
- 1.165
V
EE
V
EE
MAX
MIN
V
CC
- 1.23
V
CC
- 1.165
V
EE
V
EE
+25°C
MAX
MIN
V
CC
- 1.23
V
CC
- 1.165
V
EE
V
EE
+85°C
MAX
UNITS
SINGLE-ENDED INPUT (CLKSEL)
Input High
Voltage
Internal
V
BB
threshold
MAX9311
MAX9313
MAX9311
MAX9313
V
CC
V
CC
V
CC
- 1.62
V
CC
- 1.475
150
-10
+10
-10
V
CC
V
CC
V
CC
- 1.62
V
CC
- 1.475
150
+10
-10
V
CC
V
V
CC
V
CC
- 1.62
V
CC
- 1.475
150
+10
µA
µA
V
IH
Input Low
Voltage
V
IL
Internal
V
BB
threshold
V
Input High
Current
Input Low
Current
I
IH
I
IL
DIFFERENTIAL INPUTS (CLK_,
CLK_)
V
BB
connected MAX9311
to
CLK_
(V
IL
for V
BB
connected
MAX9313
to CLK_),
Figure 1
V
CC
- 1.23
V
CC
V
CC
- 1.23
V
CC
V
CC
- 1.23
V
CC
V
V
CC
- 1.165
V
CC
V
CC
- 1.165
V
CC
V
CC
- 1.165
V
CC
Single-Ended
Input High
Voltage
V
IH
2
_______________________________________________________________________________________
1:10 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
- V
EE
= +2.25V to +3.8V, outputs loaded with 50Ω ±1% to V
CC
- 2V, CLKSEL = high or low, unless otherwise noted.) (Notes 1–4)
PARAMETER
SYMBOL
CONDITIONS
V
BB
connected MAX9311
to
CLK_
(V
IH
for V
BB
connected
MAX9313
to CLK_),
Figure 1
-40°C
MIN
V
EE
MAX
V
CC
- 1.62
V
CC
- 1.475
MIN
V
EE
+25°C
MAX
V
CC
- 1.62
V
CC
- 1.475
MIN
V
EE
+85°C
MAX
V
CC
-1.62
V
V
EE
V
EE
V
EE
V
CC
-1.475
UNITS
MAX9311/MAX9313
Single-Ended
Input Low
Voltage
V
IL
High Voltage
of Differential
Input
Low Voltage
of Differential
Input
Differential
Input Voltage
Input High
Current
CLK_ Input Low
Current
CLK_
Input Low
Current
OUTPUTS (Q_,
Q
_
)
Single-Ended
Output High
Voltage
Single-Ended
Output Low
Voltage
Differential
Output Voltage
REFERENCE (V
BB
)
Reference
Voltage Output
(Note 5)
POWER SUPPLY
Supply Current
(Note 6)
V
IHD
V
EE
+1.2
V
CC
V
EE
+ 1.2
V
CC
V
EE
+1.2
V
CC
V
V
ILD
V
EE
V
CC
- 0.095
V
CC
- V
EE
3.0
150
V
EE
V
CC
- 0.095
V
CC
- V
EE
3.0
150
V
EE
V
CC
- 0.095
V
CC
- V
EE
3.0
150
V
V
IHD -
V
ILD
For V
CC
- V
EE
< 3.0V
For V
CC
- V
EE
≥
3.0V
0.095
0.095
0.095
0.095
0.095
0.095
V
I
IH
I
ILCLK
I
ILCLK
-10
-150
µA
µA
µA
+10
-10
-150
+10
-10
-150
+10
V
OH
Figure 1
V
CC
- 1.025
V
CC
- 0.900
V
CC
- 1.025
V
CC
- 0.900
V
CC
- 1.025
V
CC
- 0.900
V
V
OL
V
OH
-
V
OL
Figure 1
V
CC
- 1.93
670
V
CC
- 1.695
950
V
CC
- 1.93
670
V
CC
- 1.695
950
V
CC
- 1.93
670
V
CC
- 1.695
950
V
Figure 1
mV
MAX9311
V
BB
I
BB
=
±0.5mA
MAX9313
V
CC
- 1.525
V
CC
- 1.38
V
CC
- 1.325
V
CC
- 1.26
V
CC
- 1.525
V
CC
- 1.38
V
CC
- 1.325
V
CC
- 1.26
V
CC
- 1.525
V
CC
- 1.38
V
CC
- 1.325
V
V
CC
- 1.26
I
EE
75
82
95
mA
_______________________________________________________________________________________
3
1:10 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
MAX9311/MAX9313
AC ELECTRICAL CHARACTERISTICS
(V
CC
- V
EE
= 2.25V to 3.8V, outputs loaded with 50Ω ±1% to V
CC
- 2V, input frequency = 1.5GHz, input transition time = 125ps
(20% to 80%), CLKSEL = high or low, V
IHD
= V
EE
+ 1.2V to V
CC
, V
ILD
= V
EE
to V
CC
- 0.15V, V
IHD
- V
ILD
= 0.15V to the smaller of 3V or
V
CC
- V
EE
, unless otherwise noted. Typical values are at V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
-1V, V
ILD
= V
CC
-1.5V.) (Note 7)
PARAMETER
Differential
Input-to-
Output Delay
Output-to-
Output Skew
(Note 8)
Part-to-Part
Skew (Note 9)
Added
Random Jitter
(Note 10)
Added
Deterministic
Jitter (Note 10)
SYMBOL CONDITIONS
t
PLHD
,
t
PHLD
-40°C
MIN
220
TYP
321
MAX
380
MIN
220
+25°C
TYP
312
MA
410
MIN
260
+85°C
TYP
322
MAX
400
UNITS
Figure 2
ps
t
SKOO
12
46
12
46
10
35
ps
t
SKPP
f
IN
= 1.5GHz,
Clock pattern
t
RJ
f
IN
= 3.0GHz,
Clock pattern
3Gbps,
2
23
-1 PRBS
pattern
V
OH
- V
OL
≥
350mV, Clock
pattern,
Figure 2
f
MAX
V
OH
- V
OL
≥
500mV, Clock
pattern,
Figure 2
30
1.2
1.2
160
2.5
2.6
30
1.2
1.2
190
2.5
2.6
30
1.2
1.2
140
2.5
ps
ps
(RMS)
2.6
ps
(p-p)
t
DJ
80
95
80
95
80
95
2.0
2.0
3.0
2.0
GHz
Switching
Frequency
1.5
1.5
1.5
Output
Rise/Fall Time
(20% to 80%)
t
R
, t
F
Figure 2
100
112
140
100
116
140
100
121
140
ps
Note 1:
Measurements are made with the device in thermal equilibrium.
Note 2:
Current into a pin is defined as positive. Current out of a pin is defined as negative.
Note 3:
Single-ended input operation using V
BB
is limited to V
CC
- V
EE
= 3.0V to 3.8V for the MAX9311 and V
CC
- V
EE
= 2.7V to 3.8V
for the MAX9313.
Note 4:
DC parameters production tested at T
A
= +25°C. Guaranteed by design and characterization over the full operating temper-
ature range.
Note 5:
Use V
BB
only for inputs that are on the same device as the V
BB
reference.
Note 6:
All pins open except V
CC
and V
EE
.
Note 7:
Guaranteed by design and characterization. Limits are set at ±6 sigma.
Note 8:
Measured between outputs of the same part at the signal crossing points for a same-edge transition.
Note 9:
Measured between outputs of different parts at the signal crossing points under identical conditions for a same-edge
transition.
Note 10:Device
jitter added to the input signal.
4
_______________________________________________________________________________________
1:10 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
MAX9311/MAX9313
Typical Operating Characteristics
(V
CC
= +3.3V, V
EE
= 0, V
IHD
= V
CC
- 0.95V, V
ILD
= V
CC
- 1.25V, input transition time = 125ps (20% to 80%), f
IN
= 1.5GHz, outputs
loaded with 50Ω to V
CC
- 2V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT (I
EE
)
vs. TEMPERATURE
MAX9311 toc01
OUTPUT AMPLITUDE (V
OH
- V
OL
)
vs. FREQUENCY
MAX9311 toc02
TRANSITION TIME vs. TEMPERATURE
MAX9311 toc03
85
80
SUPPLY CURRENT (mA)
75
70
65
60
55
50
-40
-15
10
35
60
0.9
0.8
OUTPUT AMPLITUDE (V)
0.7
0.6
0.5
0.4
0.3
0.2
130
125
TRANSITION TIME (ps)
120
115
t
F
110
105
t
R
0.1
0
85
0
1000
2000
3000
TEMPERATURE (°C)
FREQUENCY (MHz)
100
-40
-15
10
35
60
85
TEMPERATURE (°C)
PROPAGATION DELAY
vs. HIGH VOLTAGE OF
DIFFERENTIAL INPUT (V
IHD
)
MAX9311 toc04
PROPAGATION DELAY
vs. TEMPERATURE
340
PROPAGATION DELAY (ps)
t
PLHD
320
300
280
260
240
220
200
V
IHD
= V
CC
- 0.95V
V
ILD
= V
CC
- 1.1V
t
PHLD
MAX9311 toc05
313
312
PROPAGATION DELAY (ps)
311
310
309
308
307
306
305
304
303
1.0
1.4
1.8
2.2
2.6
3.0
3.4
t
PHLD
t
PLHD
V
IHD -
V
ILD
= 150mV
360
3.8
-40
-15
10
35
60
85
V
IHD
(V)
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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