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MAX9389
User Manual
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MAXIM MAX9389 User Manual

General Description
The MAX9389 is a fully differential, high-speed, low-jitter, 8-to-1 ECL/PECL multiplexer (mux) with dual output buffers. The device is designed for clock and data distri­bution applications, and features extremely low propa­gation delay (310ps typ) and output-to-output skew (30ps max).
BB1
, V
BB2
), nominally VCC- 1.425V. The select inputs accept signals between VCCand VEE. Internal pulldowns to VEEensure a low default condition if the select inputs are left open.
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 reference output (V
BB1
, V
BB2
). All the differential inputs have internal bias and clamping circuits that ensure a low output state when the inputs are left open.
The MAX9389 operates with a wide supply range V
CC
­VEEof 2.375V to 5.5V. The device is offered in 32-pin TQFP and thin QFN packages, and operates over the
-40°C to +85°C extended temperature range.
Applications
High-Speed Telecom and Datacom Applications
Central-Office Backplane Clock Distribution
DSLAM/DLC
Features
♦ 310ps Propagation Delay
♦ Guaranteed 2.7GHz Operating Frequency
♦ 0.3ps
RMS
Random Jitter
♦ <30ps Output-to-Output Skew
♦ -2.375V to -5.5V Supplies for Differential
LVECL/ECL
♦ +2.375V to +5.5V Supplies for Differential
LVPECL/PECL
♦ Outputs Low for Open Inputs
♦ Dual Output Buffers
♦ >2kV ESD Protection (Human Body Model)
MAX9389
Differential 8:1 ECL/PECL Multiplexer with
Dual Output Buffers
________________________________________________________________ Maxim Integrated Products 1
Pin Configurations
Ordering Information
V
BB1
V
BB2
V
CC
V
EE
V
CC
V
EE
MUX
8:1
180kΩ
180kΩ165kΩ 180kΩ
232kΩ
D0
D0
D1
D1
D2
D2
D3
D3
D4
SEL0
SEL1
SEL2
D4
Q0
Q0
Q1
Q1
D_
D_
MAX9389
V
EE
D5
D5
D6
D6
D7
D7
Functional Diagram
19-2688; Rev 0; 1/03
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.
Pin Configurations continued at end of data sheet.
*Future product—contact factory for availability.
PART TEMP RANGE PIN-PACKAGE
MAX9389EHJ -40°C to +85°C 32 TQFP
MAX9389ETJ* -40°C to +85°C 32 Thin QFN
TOP VIEW
CC
V
BB2
V
BB1
D0
D0
D1
D1
CC
EE
Q0Q0VCCQ1
V
32 28
MAX9389
10
9
D2D3D2D4D3D5D4
TQFP
1V
2
3
4
5
6
7
8V
293031
Q1
VCCSEL2
26
25
27
24 SEL1
SEL0
23
V
22
CC
D7
14
13
21
15
D7
20
D6
19
D6
18
V
17
EE
1611 12
D5
MAX9389
Differential 8:1 ECL/PECL Multiplexer with Dual Output Buffers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC- VEE= 2.375V 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
= VCC- 1.5V, unless otherwise noted.) (Notes 1–4)
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- V
EE
..............................................................-0.3V to +6.0V
Inputs (D_, D_, SEL_) to V
EE
......................-0.3V to (V
CC
+ 0.3V)
D_ to D_...............................................................................±3.0V
Continuous Output Current .................................................50mA
Surge Output Current........................................................100mA
V
BB
_ Sink/Source Current ..............................................±600µA
Continuous Power Dissipation (T
A
= +70°C)
32-Lead TQFP (derate 13.1mW/°C above +70°C) ...1047mW
θ
JA
in Still Air..........................................................+76°C/W
θ
JC
.........................................................................+25°C/W
32-Lead QFN (derate 21.3mW/°C above +70°C) .....1702mW
θ
JA
in Still Air..........................................................+47°C/W
θ
JC
...........................................................................+2°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_, SEL_, V
BB
_) .............≥2kV
Soldering Temperature (10s) ...........................................+300°C
PARAMETER SYMBOL CONDITIONS
INPUT (D_, D_, SEL_)
Single-Ended Input High Voltage
MIN TYP MAX MIN TYP MAX MIN TYP MAX
V
V
BB_
IH
unused input, Figure 1
connected to the
V
CC
1.225
-
-40°C +25°C +85°C
VCC -
V
0.880
CC
1.225
-
VCC -
0.880
V
CC
1.225
-
VCC -
0.880
UNITS
V
Single-Ended Input Low Voltage
Differential Input High Voltage
Differential Input Low Voltage
Differential Input
V
Voltage
Input Current I
OUTPUT (Q_, Q_)
Single-Ended Output High Voltage
V
V
V
IHD
V
V
V
connected to the
BB_
IL
unused input, Figure 1
Figure 1
IHD
Figure 1 V
ILD
V
3.0V
V
ILD
­Figure 1
3.0V
V
IN
IH, VIL, VIHD, VILD
Figure 2
OH
CC
CC
- VEE <
- VEE ≥
VCC -
1.945
V
EE
1.2
EE
0.095
+
V
CC
1.625
V
CC
V
CC
0.095
V
CC
V
EE
-
-
-
VCC -
1.945
V
EE
1.2
V
EE
0.095
V
-
VCC -
CC
1.625
1.945
+
V
CC
V
CC
0.095
V
CC
V
EE
-
-
V
EE
1.2
V
EE
0.095
+
V
CC
1.625
V
CC
V
CC
0.095
V
CC
V
EE
-
-
-
0.095 3.000 0.095 3.000 0.095 3.000
-60 +60 -60 +60 -60 +60 µA
V
CC
1.145
-
V
CC
0.895
-
V
CC
1.145
-
V
CC
0.895
-
V
CC
1.145
-
V
-
CC
0.895
V
V
V
V
V
MAX9389
Differential 8:1 ECL/PECL Multiplexer with
Dual Output Buffers
_______________________________________________________________________________________ 3
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC- VEE= 2.375V 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
= VCC- 1.5V, unless otherwise noted.) (Notes 1–4)
AC ELECTRICAL CHARACTERISTICS
(VCC- VEE= 2.375V to 5.5V, outputs loaded with 50Ω±1% to VCC- 2V, V
IHD
- V
ILD
= 0.15V to 1V, fIN≤ 2.5GHz, input duty cycle = 50%,
input transition time = 125ps (20% to 80%). Typical values are at V
CC
- VEE= 3.3V, V
IHD
= VCC- 1V, V
ILD
= VCC- 1.5V, fIN= 622 MHz,
input duty cycle = 50%, input transition time = 125ps (20% to 80%.)) (Note 7)
PARAMETER SYMBOL CONDITIONS
Single-Ended Output Low
V
OL
Figure 2
Voltage
Differential Output Voltage
V
OH
V
­Figure 2 650 830 650 840 650 840 mV
OL
-40°C +25°C +85°C
MIN TYP MAX MIN TYP MAX MIN TYP MAX
V
CC
1.945
-
V
CC
1.695
-
V
CC
1.945
-
V
CC
1.695
-
V
CC
1.945
-
REFERENCE OUTPUT (VBB_ )
Reference Voltage Output
V V
BB1
BB2
I
+ I
BB1
(Note 5)
= ±0.5mA
BB2
V
CC
1.525
-
V
CC
1.425
-
V
CC
1.325
-
V
CC
1.525
-
V
CC
1.425
-
V
CC
1.325
-
V
CC
1.525
-
V
CC
1.425
POWER SUPPLY
Supply Current I
(Note 6) 50 70 53 70 55 70 mA
EE
PARAMETER SYMBOL CONDITIONS
Differential Input­to-Output Delay
SEL_-to-Output Delay
t
PLHD
t
PHLD
t
PLH2
t
PHL2
,
Figure 2 216 301 370 237 310 416 255 329 456 ps
Figure 4, input
,
transition time = 500ps (20% to 80%) (Note 8)
MIN TYP MAX MIN TYP MAX MIN TYP MAX
-40°C +25°C +85°C
1.34 2 1.25 2 1.44 2 ns
-
V
CC
1.695
V
CC
1.325
UNITS
­V
­V
UNITS
Output-to-Output Skew
Input-to-Output Skew
Part-to-Part Skew
Added Random Jitter (Note 12)
Added Deterministic Jitter (Note 12)
t
SKOO
t
t
SKPP
Figure 5 (Note 9) 15 15 30 ps
Figure 6 (Note 10) 50 50 55 ps
SKIO
(Note 11) 125 150 160 ps
Clock
t
RJ
pattern
PRBS
T
DJ
2
fIN = 156MHz 0.3 1.15 0.3 1.15 0.3 1.15
fIN = 622MHz 0.3 1.15 0.3 1.15 0.3 1.15
f
= 2.5GHz 0.3 1.15 0.3 1.15 0.3 1.15
IN
fIN = 156Mbps 33 95 33 95 33 95
23
- 1 f
= 622Mbps 21 61 21 61 21 61
IN
ps
ps
RMS
P-P
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