19-2201; Rev 0; 8/01
1:2 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
General Description
The MAX9320/MAX9320A are low-skew, 1-to-2 differen-
tial drivers designed for clock and data distribution. The
input is reproduced at two differential outputs. The dif-
ferential input can be adapted to accept single-ended
inputs by applying an external reference voltage.
The MAX9320/MAX9320A feature ultra-low propagation
delay (208ps), part-to-part skew (20ps), and output-to-
output skew (6ps) with 30mA maximum supply current,
making these devices ideal for clock distribution. 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 distrib-
ution 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 pinout is the only difference between the MAX9320
and MAX9320A. Multiple pinouts are provided to simplify
routing across a backplane to either side of a double-
sided board.
These devices are offered in space-saving 8-pin SOT23*
and industry-standard TSSOP* and SO packages.
Features
o
Improved Second Source of the MC10LVEP11
(MAX9320)
o
+2.25V to +3.8V Differential HSTL/LVPECL
Operation
o
-2.25V to -3.8V LVECL Operation
o
Low 22mA (typ) Supply Current
o
20ps (typ) Part-to-Part Skew
o
6ps (typ) Output-to-Output Skew
o
208ps (typ) Propagation Delay
o
Minimum 300mV Output at 3GHz
o
Outputs Low for Open Input
o
ESD Protection >2kV (Human Body Model)
o
Available in Thermally Enhanced Exposed-Pad
SO Package
MAX9320/MAX9320A
Applications
Precision Clock Distribution
Low-Jitter Data Repeater
Protection Switching
PART
MAX9320EKA-T*
MAX9320ESA
MAX9320EUA*
MAX9320AEKA*
Ordering Information
TEMP.
RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 SOT23
8 SO-EP**
8 TSSOP
8 SOT23
TOP
MARK
—
—
—
AAIW
*Future product—contact factory for availability.
**EP-Exposed pad.
Pin Configurations
Q0 1
Q0 2
MAX9320
60kΩ
8 V
CC
7 D
100kΩ
6 D
V
CC
1
V
CC
V
EE
2
D 3
D 4
60kΩ
MAX9320A
8 Q0
7 Q0
6 Q1
V
CC
1
V
EE
2
D 3
D 4
V
EE
MAX9320
V
CC
60kΩ
100kΩ
100kΩ
8 Q0
7 Q0
6 Q1
5 Q1
Q1 3
100kΩ
Q1 4
100kΩ
100kΩ
5 V
EE
5 Q1
V
EE
TSSOP*/SO
SOT23*
SOT23*
________________________________________________________________
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.
1:2 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
MAX9320/MAX9320A
ABSOLUTE MAXIMUM RATINGS
V
CC
to V
EE
..........................................................................+4.1V
D or
D
.................................................. V
EE
- 0.3V to V
CC
+ 0.3V
D to
D
.................................................................................±3.0V
Continuous Output Current .................................................50mA
Surge Output Current........................................................100mA
Junction-to-Ambient Thermal Resistance in Still Air
8-Pin SOT23.............................................................+112°C/W
8-Pin TSSOP ............................................................+221°C/W
8-Pin SO...................................................................+170°C/W
Junction-to-Ambient Thermal Resistance with 500
LFPM Airflow
8-Pin SOT23...............................................................+78°C/W
8-Pin TSSOP ............................................................+155°C/W
8-Pin SO.....................................................................+99°C/W
Junction-to-Case Thermal Resistance
8-Pin SOT23...............................................................+80°C/W
8-Pin TSSOP ..............................................................+39°C/W
8-Pin SO.....................................................................+40°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 (D,
D,
Q_,
Q_)
.................................>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. Typical values are at V
CC
- V
EE
= +3.3V, V
IHD
= V
CC
-
1.0V, V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Notes 1, 2, 3)
PARAMETER
SYMBOL
CONDITIONS
-40°C
MIN
TYP
MAX
MIN
+25°C
TYP
MAX
MIN
+85°C
TYP
MAX
UNITS
DIFFERENTIAL INPUT (D,
D)
High Voltage of
Differential
Input
Low Voltage of
Differential
Input
V
IHD
V
EE
+ 1.2
V
V
EE
+ 1.2
V
CC
V
EE
+ 1.2
V
CC
V
V
ILD
For V
CC
- V
EE
< +3.0V
For V
CC
- V
EE
≥
+3.0V
V
EE
V
CC
- 0.1
V
CC
- V
EE
3.0
150
V
EE
V
CC
- 0.1
V
CC
- V
EE
3.0
150
V
EE
V
CC
- 0.1
V
CC
- V
EE
3.0
150
V
0.1
0.1
0.1
0.1
0.1
0.1
Differential
Input Voltage
V
IHD
- V
ILD
V
Input High
Current
D Input Low
Current
D
Input Low
Current
Single-Ended
Output High
Voltage
I
IH
I
ILD
I
ILD
-10
-150
µA
µA
µA
100
-10
-150
100
-10
-150
100
DIFFERENTIAL OUTPUTS (Q_,
Q
__
)
V
OH
Figure 1
V
CC
- 1.135
V
CC
- 0.885
V
CC
- 1.07
V
CC
- 0.82
V
CC
- 1.01
V
CC
- 0.76
V
2
_______________________________________________________________________________________
1:2 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. Typical values are at V
CC
- V
EE
= +3.3V, V
IHD
= V
CC
-
1.0V, V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Notes 1, 2, 3)
PARAMETER
Single-Ended
Output Low
Voltage
Differential
Output Voltage
POWER SUPPLY
Supply Current
(Note 4)
I
EE
20
28
22
28
23
30
mA
SYMBOL
CONDITIONS
-40°C
MIN
V
CC
- 1.935
550
TYP
MAX
MIN
+25°C
TYP
MAX
V
CC
- 1.62
MIN
V
CC
- 1.81
550
+85°C
TYP
MAX
V
CC
- 1.56
UNITS
MAX9320/MAX9320A
V
OL
V
OH
- V
OL
Figure 1
V
CC
V
CC
- 1.685 - 1.87
550
V
Figure 1
mV
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%), 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
. Typical
values are at V
CC
- V
EE
= +3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Note 5)
PARAMETER
Differential
Input-to-
Output Delay
Output-to-
Output Skew
(Note 6)
Part-to-Part
Skew (Note 7)
Added
Random Jitter
(Note 8)
Added
Deterministic
Jitter (Note 8)
SYMBOL
t
PLHD
,
t
PHLD
CONDITIONS
-40°C
MIN
145
TYP
220
MAX
265
MIN
155
+25°C
TYP
208
MAX
265
MIN
160
+85°C
TYP
203
MAX
270
UNITS
Figure 1
ps
t
SKOO
6
30
6
30
6
30
ps
t
SKPP
f
IN
= 1.5GHz, Clock
pattern
t
RJ
f
IN
= 3.0GHz, Clock
pattern
3.0Gbps
2
23
-1 PRBS pattern
20
1.7
0.6
120
2.8
1.5
20
1.7
0.6
110
2.8
1.5
20
1.7
0.6
110
2.8
ps
ps
(RMS)
1.5
ps
(p-p)
t
DJ
57
80
57
80
57
80
_______________________________________________________________________________________
3
1:2 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
MAX9320/MAX9320A
AC ELECTRICAL CHARACTERISTICS (continued)
(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%), 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
. Typical
values are at V
CC
- V
EE
= +3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Note 5)
PARAMETER
SYMBOL
CONDITIONS
V
OH
- V
OL
≥
300mV,
Clock pattern,
Figure 1
f
MAX
V
OH
- V
OL
≥
550mV,
Clock pattern,
Figure 1
-40°C
MIN
3.0
TYP
MAX
MIN
3.0
+25°C
TYP
MAX
MIN
3.0
GHz
2.0
2.0
2.0
+85°C
TYP
MAX
UNITS
Switching
Frequency
Output
Rise/Fall Time
(20% to 80%)
t
R
, t
F
Figure 1
50
88
120
50
89
120
50
90
120
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:
DC parameters production tested at T
A
= +25°C. Guaranteed by design and characterization over the full operating temper-
ature range.
Note 4:
All pins open except V
CC
and V
EE
.
Note 5:
Guaranteed by design and characterization. Limits are set at ±6 sigma.
Note 6:
Measured between outputs of the same part at the signal crossing points for a same-edge transition.
Note 7:
Measured between outputs of different parts at the signal crossing points under identical conditions for a same-edge transi-
tion.
Note 8:
Device jitter added to the input signal.
4
_______________________________________________________________________________________
1:2 Differential LVPECL/LVECL/HSTL
Clock and Data Drivers
Typical Operating Characteristics
(V
CC
= +3.3V, V
EE
= 0, input transition time = 125ps (20% to 80%), V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, f
IN
= 1.5GHz, outputs loaded
with 50Ω to V
CC
- 2V, T
A
= +25°C, unless otherwise noted.)
OUTPUT AMPLITUDE, V
OH
- V
OL
vs. FREQUENCY
0.8
OUTPUT AMPLITUDE (V)
0.7
0.6
0.5
0.4
0.3
0.2
86
0.1
0
-40
-15
10
35
60
85
0
500
1000 1500 2000 2500 3000 3500
FREQUENCY (MHz)
TEMPERATURE (°C)
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
MAX9320 toc02
MAX9320/MAX9320A
SUPPLY CURRENT, I
EE
vs. TEMPERATURE
24
23
SUPPLY CURRENT (mA)
22
21
20
19
18
17
16
15
MAX9320 toc01
TRANSITION TIME vs. TEMPERATURE
MAX9320 toc03
25
0.9
91
90
TRANSITION TIME (ps)
89
88
t
R
87
t
F
PROPAGATION DELAY vs.
HIGH VOLTAGE OF DIFFERENTIAL INPUT, V
IHD
V
IHD
- V
ILD
= 0.5V
220
PROPAGATION DELAY (ps)
215
210
205
t
PHLD
200
195
1.0
1.4
1.8
2.2
2.6
3.0
3.4
3.8
V
IHD
(V)
MAX9320 toc04
PROPAGATION DELAY vs. TEMPERATURE
230
PROPAGATION DELAY (ps)
220
210
200
190
180
170
160
-40
-15
10
35
60
85
TEMPERATURE (°C)
t
PHLD
t
PLHD
MAX9320 toc05
225
240
t
PLHD
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5
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