MAXIM MAX9380 User Manual
General Description
The MAX9380 is a high-speed, low-jitter 2:1 multiplexer
for clock and data distribution applications. The device
selects one of the two single-ended inputs and converts it to a differential output.
The MAX9380 features low part-to-part skew of 33ps
and propagation delay of 263ps.
The MAX9380 operates from a +3.0V to +3.8V supply for
LVPECL applications or from a -3.0V to -3.8V supply for
LVECL applications. The input is selected by a single select
input. The select and data inputs feature internal pulldown
resistors that ensure a low default state if left open.
These devices are specified for operation from -40°C to
+85°C, and are available in space-saving 8-pin µMAX
and SO packages.
Applications
Precision Clock Distribution
DSLAM
DLC
Base Station
ATE
Features
♦ >300mV Differential Output at 3.5GHz
♦ Low 20mA Supply Current
♦ 33ps (typ) Part-to-Part Skew
♦ 263ps (typ) Propagation Delay
♦ <0.2ps
RMS
Added Random Jitter
♦ High-Speed Select Input
♦ Output Low with Open Inputs
♦ Pin Compatible with MC10EP58
MAX9380
Single-Ended-to-Differential
LVECL/LVPECL 2:1 Multiplexer
________________________________________________________________ Maxim Integrated Products 1
Pin Configuration
INPUTS OUTPUTS
Da (SEL = high) or
Db (SEL = low)
Q Q
High H L
Low or open L H
PART
PIN-PACKAGE
MAX9380EUA*
8 µMAX
MAX9380ESA
8 SO-EP**
Input/Output Function Table
19-2236; Rev 0; 10/01
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.
Ordering Information
*Future product—contact factory for availability.
**EP = Exposed paddle.
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
TOP VIEW
NC
Db
SEL
1
MAX9380
2Da
75kΩ
3
75kΩ
4
75kΩ
1
0
µMAX/SO
87V
6
5
CC
Q
Q
V
EE
MAX9380
Single-Ended-to-Differential
LVECL/LVPECL 2:1 Multiplexer
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC- VEE= +3.0V to +3.8V, outputs terminated with 50Ω to VCC- 2.0V, unless otherwise noted.) (Notes 1, 2, 3)
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.
VCC- VEE...............................................................-0.3V to +4.1V
Inputs (Da, Db, SEL).............................V
EE
- 0.3V to VCC+ 0.3V
Output Current (Continuous)...............................................50mA
Output Current (Surge) .....................................................100mA
Junction-to-Ambient Thermal Resistance in Still Air
8-Pin µMAX ..............................................................+221°C/W
8-Pin SO* .................................................................+170°C/W
Junction-to-Ambient Thermal Resistance with
500LFPM Airflow
8-Pin µMAX ..............................................................+155°C/W
8-Pin SO* ...................................................................+99°C/W
Junction-to-Case Thermal Resistance
8-Pin µMAX ................................................................+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 (Inputs and Outputs) .........................2kV
Soldering Temperature (10s) ...........................................+300°C
* Rating is for exposed paddle not connected.
PARAMETER SYMBOL CONDITIONS
INPUTS (Da, Db, SEL)
Input High Voltage V
Input Low Voltage V
IH
IL
MIN TYP MAX MIN TYP MAX MIN TYP MAX
VCC -
1.210
VCC -
1.935
-40°C +25°C +85°C
VCC -
0.885
VCC -
1.610
VCC -
1.145
VCC -
1.870
VCC -
0.820
VCC -
1.545
VCC -
1.085
VCC -
1.81
VCC -
0.760
VCC -
1.485
UNITS
V
V
Input High Current I
Input Low Current I
OUTPUTS (Q, Q)
Single-Ended
Output High
Voltage
Single-Ended
Output Low
Voltage
Differential Output
Voltage
POWER SUPPLY
Supply Current I
VOH -
VIN = V
IH
IL
V
OH
V
OL
V
OL
EE
IH(MAX)
VIN = V
IL(MIN)
Figure 1
Figure 1
Figure 1 550 748 550 741 550 734 mV
(Note 4) 18 26 20 26 22 30 mA
0.5 0.5 0.5 µA
V
-
VCC -
CC
1.135
0.979
V
-
VCC -
CC
1.935
1.721
150 150 150 µA
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
0.885
VCC -
1.685
1.07
VCC -
1.87
0.959
VCC -
1.698
0.82
VCC -
1.62
1.01
VCC -
1.81
0.947
VCC -
1.681
0.76
VCC -
1.56
V
V
MAX9380
Single-Ended-to-Differential
LVECL/LVPECL 2:1 Multiplexer
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS
(VCC- VEE= +3.0V to +3.8V, outputs loaded with 50Ω to VCC- 2V, VIH= VCC- 1.11V, VIL= VCC- 1.53V, input frequency = 2.0GHz,
input transition time = 125ps (20% to 80%). Typical values are at V
CC
- VEE= +3.3V, unless otherwise noted.) (Notes 1, 5)
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 are production tested at +25°C. DC limits are guaranteed by design and characterization over the full oper-
ating temperature range.
Note 4: All pins are open except V
CC
and VEE.
Note 5: Guaranteed by design and characterization. Limits are set to ±6 sigma.
Note 6: Measured between outputs of different parts at the signal crossing points under identical conditions for a same-edge transition.
Note 7: Device jitter added to the input signal.
PARAMETER SYMBOL CONDITIONS
Data Input-to-Output
Delay
Select Input-toOutput Delay
Part-to-Part Skew t
Added Random
Jitter (Note 7)
Added Deterministic
Jitter (Note 7)
Switching Frequency f
Output Rise/Fall
Time (20% to 80%)
t
PLH1
t
PHL1
t
PLH2
t
PHL2
SKPP
t
t
MAX
t
R
,
Figure 1 176 258 298 192 263 316 222 277 385 ps
,
Figure 2 210 304 329 219 308 360 247 318 392 ps
,
Data input to
output (Note 6)
fIN = 3.2GHz,
RJ
clock pattern
2.0Gbps, 223 - 1
PRBS
DJ
3.2Gbps, 223 - 1
PRBS
VOH - VOL ≥
300mV
1
V
550mV
Figure 1 50 96 50 96 50 98 ps
, t
Figure
F
OH
- VOL ≥
MIN TYP MAX MIN TYP MAX MIN TYP MAX
3.0 3.5 3.0 3.5 3.0 3.5
2.0 2.0 2.0
-40°C +25°C +85°C
27 122 33 124 14 163 ps
1.2 0.2 1.2 1.2
51 36 51 51
77 48 77 77
UNITS
ps
(RMS)
ps
(p-p)
GHz
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