MAXIM MAX9384 Technical data
General Description
The MAX9384 fully differential dual 2:1 multiplexer
(mux) features extremely low propagation delay (560ps
max) and output-to-output skew (40ps max). The
device is ideal for clock and data multiplexing applications. The two 2:1 muxes are controlled individually or
simultaneously through mux select inputs COM_SEL,
SEL0, and SEL1. The mux select inputs are compatible
with ECL/PECL logic, and are referenced to on-chip
outputs V
BB0
and V
BB1
, nominally VCC- 1.33V.
The differential inputs D, D can be configured to accept
a single-ended signal when the unused complementary
input is connected to the on-chip supply output VBBas
a reference voltage. All the differential inputs have bias
and clamp circuits that force the outputs to a low
default when the inputs are left open or at VEE. The single-ended mux select inputs have pulldowns to VEE,
providing low default inputs when the select inputs are
left open.
The device operates with a wide supply range (VCCVEE) of +3.0V to +5.5V for PECL or -3.0V to -5.5V for
ECL, and is pin compatible with the MC100LVEL56 and
MC100EL56. The MAX9384 is offered in a 20-pin wide
SO package, and is specified for operation from -40°C
to +85°C.
Applications
High-Speed Telecom, Datacom Applications
Central-Office Backplane Clock Distribution
Access Multiplexers (DSLAM/DLC)
Features
♦ 40ps
P-P
Deterministic Jitter
♦ 440ps Differential Propagation Delay
♦ 12ps Output-to-Output Skew
♦ Individual and Common Select
♦ +3.0V to +5.5V Supplies for Differential
LVPECL/PECL
♦ -3.0V to -5.5V Supplies for Differential LVECL/ECL
♦ Outputs Low for Inputs Open or at V
EE
♦ >2kV ESD Protection (Human Body Model)
♦ Pin Compatible with MC100LVEL56 and
MC100EL56
MAX9384
ECL/PECL Dual Differential 2:1 Multiplexer
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
V
CC
SEL0D0b
V
BB0
V
BB1
D0a
TOP VIEW
COM_SEL
SEL1
V
CC
Q1
D1a
D1b
12
11
9
10 V
EE
MAX9384
SO
DOa
DOb
D1a
D1b
Q1
Q0
Q0
Pin Configuration
19-2484; Rev 0; 7/02
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.
Functional Diagram appears at end of data sheet.
PART TEMP RANGE PIN-PACKAGE
MAX9384EWP -40°C to +85°C 20 Wide SO
MAX9384
ECL/PECL Dual Differential 2:1 Multiplexer
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC- VEE= 3.0V to 5.5V, outputs loaded with 50Ω ±1% to VCC- 2V. Typical values are at VCC- VEE= 3.3V, V
IHD
= VCC- 1V, V
ILD
=
V
CC
- 1.5V, 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 6.0V
Inputs (D_, D_, SEL_, COM_SEL) to V
EE
....-0.3V to (VCC+ 0.3V)
D_ to D_ ..............................................................................±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
20-Lead Wide SO ....................................................+100°C/W
Junction-to-Ambient Thermal Resistance with
500LFPM Airflow
20-Lead Wide SO ......................................................+58°C/W
Junction-to-Case Thermal Resistance
20-Lead Wide SO ......................................................+20°C/W
Continuous Power Dissipation (T
A
= +70°C)
20-Lead Wide SO
(derate 10mW/°C above +70°C)..................................800mW
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_, SEL_, COM_SEL) .................................≥ 2kV
Soldering Temperature (10s) ...........................................+300°C
-40°C +25°C +85°C
PARAMETER
SYMBOL
CONDITIONS
UNITS
SINGLE-ENDED INPUT SEL_, COM_SEL
Input High
Voltage
V
IH
Internally
referenced to
V
BB
, Figure 1
V
CC
-
VCC -
VCC -
V
Input Low
Voltage
V
IL
Internally
referenced to
V
BB
, Figure 1
V
CC
-
VCC -
VCC -
VCC -
VCC -
VCC -
V
Input Current I
IN
VIH, V
IL
µA
DIFFERENTIAL INPUT (D_, D_)
Single-Ended
Input High
Voltage
V
IH
VBB connected to
the unused input,
Figure 1
V
CC
-
VCC -
VCC -
V
Single-Ended
Input Low
Voltage
V
IL
VBB connected to
the unused input,
Figure 1
V
CC
-
VCC -
VCC -
VCC -
VCC -
VCC -
V
High Voltage of
Differential Input
V
IHD
Figure 1
V
EE
+
VEE +
VEE +
V
Low Voltage of
Differential Input
V
ILD
Figure 1
VCC -
VCC -
VCC -
V
Differential Input
Voltage
V
IHD
-
V
ILD
Figure 1
V
Input Current I
IN
µA
MIN TYP MAX MIN TYP MAX MIN TYP MAX
VIH, VIL, V
V
1.165
1.810
-10 +50 -10 +50 -10 +50
1.165
1.810
1.3
V
EE
CC
1.475
V
CC
1.475
V
CC
0.095
1.165
1.810
1.165
1.810
1.2
V
EE
0.095 3.0 0.095 3.0 0.095 3.0
IHD
, V
-100 +100 -100 +100 -100 +100
ILD
V
CC
1.475
V
CC
1.475
V
CC
0.095
1.165
1.810
1.165
1.810
1.2
V
EE
V
CC
1.475
V
CC
1.475
V
CC
0.095
MAX9384
ECL/PECL Dual Differential 2:1 Multiplexer
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC- VEE= 3.0V to 5.5V, outputs loaded with 50Ω ±1% to VCC- 2V. Typical values are at VCC- VEE= 3.3V, V
IHD
= VCC- 1V, V
ILD
=
V
CC
- 1.5V, unless otherwise noted.) (Notes 1, 2, 3)
-40°C +25°C +85°C
PARAMETER
SYMBOL
CONDITIONS
UNITS
OUTPUT (Q_, Q_)
Single-Ended
Output High
Voltage
V
OH
Figure 2
V
CC
-
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
V
Single-Ended
Output Low
Voltage
V
OL
Figure 2
V
CC
-
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
V
Differential
Output Voltage
VOH -
V
OL
Figure 2
mV
REFERENCE OUTPUT (VBB)
Reference
Voltage Output
V
BB
IBB = ±0.5mA
(Note 4)
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
VCC -
V
SUPPLY
Supply Current I
EE
(Note 5)
mA
MIN TYP MAX MIN TYP MAX MIN TYP MAX
1.085
0.998
0.880
1.025
0.947
0.880
1.025
1.830
1.707
1.555
1.810
1.685
1.620
1.810
600 640 660
1.38
1.322
1.26
1.38
1.330
15 24 17 24 19 24
1.26
1.38
0.929
1.690
1.335
0.880
1.620
1.26
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