19-2617; Rev 1; 12/02
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
MAX9386/MAX9387/MAX9388
General Description
The MAX9386/MAX9387/MAX9388 are fully differential,
high-speed, low-jitter ECL/PECL multiplexers (muxes)
with output buffer(s). The devices are designed for
clock-and-data distribution applications, and feature
extremely low propagation delays (318ps, typ) and out-
put-to-output skews (3.9ps, typ). The MAX9386 is a 5:1
mux with a single output buffer. The MAX9387 is a 5:1
mux with dual output buffers, and is intended for use in
redundant systems. The MAX9388 is a 4:1 mux with a
single output buffer, and is pin compatible with the
MC100EP57.
Three single-ended select inputs, SEL0, SEL1, and
SEL2, control the mux function on the MAX9386/
MAX9387. The MAX9388 has two select inputs, SEL0
and SEL1. The mux select inputs are compatible with
ECL/PECL logic, and are internally referenced to the
on-chip output V
BB
, nominally V
CC
- 1.425V. The select
inputs accept signals between V
CC
and V
EE
. Internal
pulldowns to V
EE
ensure 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 comple-
mentary input is connected to the on-chip reference
output V
BB
. All the differential inputs have internal bias
and clamping circuits that ensure low-default output
states when the inputs are left open.
The MAX9386/MAX9387/MAX9388 operate with a wide
supply range
|
V
CC
- V
EE
|
of 2.375V to 5.5V. The
MAX9386/MAX9388 are offered in 20-pin TSSOP and
QSOP packages. The MAX9387 is offered in 24-pin
TSSOP and QSOP packages.
o
318ps (typ) Propagation Delay
o
>2.7GHz Toggle Frequency
o
0.3ps(RMS) Random Jitter
o
<14ps (max) at +25°C Output-to-Output Skew
(MAX9387)
o
-2.375V to -5.5V Supplies for Differential
LVECL/ECL
o
+2.375V to +5.5V Supplies for Differential
LVPECL/PECL
o
Outputs Low for Open Inputs
o
Dual Output Buffers (MAX9387)
o
Pin Compatible with MC100EP57 (MAX9388EUP)
o
>2kV ESD Protection (Human Body Model)
Features
Ordering Information
PART
MAX9386EUP
TEMP
RANGE
PIN-
PACKAGE
SELECTION
5:1 mux with 1
output buffer
5:1 mux with 1
output buffer
-40°C to +85°C 20 TSSOP
MAX9386EEP* -40°C to +85°C 20 QSOP
Ordering Information continued at end of data sheet.
*Future
product—contact factory for availability.
Pin Configurations
TOP VIEW
DO 1
DO 2
D1 3
D1 4
D2 5
D2 6
D3 7
D3 8
D4 9
D4 10
20 V
CC
19 SEL2
18 SEL1
17 SEL0
Applications
High-Speed Telecom and Datacom Applications
Central Office Backplane Clock Distribution
DSLAM/DLC
MAX9386
16 Q
15 Q
14 V
CC
13 V
BB1
12 V
BB2
11 V
EE
TSSOP/QSOP
Pin Configurations continued at end of data sheet.
________________________________________________________________
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.
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
MAX9386/MAX9387/MAX9388
ABSOLUTE MAXIMUM RATINGS
V
CC
- 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)
20-Lead TSSOP (derate 11.0mW/°C above +70°C) ....880mW
θ
JA
in Still Air ...........................................................+91°C/W
θ
JC
...........................................................................+20°C/W
24-Lead TSSOP (derate 12.2mW/°C above +70°C) ....976mW
θ
JA
in Still Air ...........................................................+82°C/W
θ
JC
...........................................................................+15°C/W
20-Lead QSOP (derate 9.1mW/°C above +70°C) .......727mW
θ
JA
in Still Air .........................................................+110°C/W
θ
JC
...........................................................................+34°C/W
24-Lead QSOP (derate 9.5mW/°C above +70°C) .......762mW
θ
JA
in Still Air .........................................................+105°C/W
θ
JC
...........................................................................+34°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
Lead Temperature (soldering, 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
= 2.375V to 5.5V, outputs loaded with 50Ω
±1%
to V
CC
- 2V. Typical values are at V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V,
V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Notes 1–4)
PARAMETER
SYMBOL
CONDITIONS
-40°C
MIN
TYP
MAX
MIN
+25°C
TYP
MAX
MIN
+85°C
TYP
MAX
UNITS
INPUT (D_,
D_,
SEL_)
Single-Ended
Input High
Voltage
Single-Ended
Input Low
Voltage
Differential Input
High Voltage
Differential Input
Low Voltage
V
IH
V
BB
connected to
the unused input
(Figure 1)
V
BB
connected to
the unused input
(Figure 1)
Figure 1
Figure 1
V
CC
- V
EE
<
3.0V
V
CC
- V
EE
≥
3.0V
V
CC
-
1.225
V
CC
- V
CC
-
0.880 1.225
V
CC
- V
CC
-
0.880 1.225
V
CC
-
0.880
V
V
IL
V
CC
-
1.945
V
EE
+
1.2
V
EE
0.095
0.095
-100
V
CC
- V
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
- V
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
3.000
+100
V
V
IHD
V
ILD
V
V
Differential Input
Voltage
Input Current
V
IHD
- V
ILD
Figure 1
V
3.000 0.095
+100
-100
3.000 0.095
+100
-100
I
IN
V
IH,
V
IL,
V
IHD,
V
ILD
µA
2
_______________________________________________________________________________________
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50Ω
±1%
to V
CC
- 2V. Typical values are at V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V,
V
ILD
= V
CC
- 1.5V, unless otherwise noted.) (Notes 1–4)
PARAMETER
OUTPUT (Q_,
Q_)
Single-Ended
Output High
Voltage
Single-Ended
Output Low
Voltage
Differential
Output Voltage
V
OH
Figure 2
V
CC
-
1.145
V
CC
- V
CC
-
0.895 1.145
V
CC
- V
CC
-
0.895 1.145
V
CC
-
0.895
V
SYMBOL
CONDITIONS
-40°C
MIN
TYP
MAX
MIN
+25°C
TYP
MAX
MIN
+85°C
TYP
MAX
UNITS
MAX9386/MAX9387/MAX9388
V
OL
Figure 2
V
CC
-
1.945
650
830
V
CC
- V
CC
-
1.695 1.945
650
840
V
CC
- V
CC
-
1.695 1.945
650
840
V
CC
-
1.695
V
V
OH
- V
OL
Figure 2
mV
REFERENCE OUTPUT (V
BB
_ )
Reference
Voltage Output
POWER SUPPLY
MAX9386
Supply Current
(Note 6)
I
EE
MAX9387
MAX9388
34
40
31
50
60
47
36
42
33
50
60
47
38
45
35
50
60
47
mA
V
BB1
,
V
BB2
I
BB1
+ I
BB2
=
±0.5mA
(Note 5)
V
CC
- V
CC
- V
CC
- V
CC
- V
CC
- V
CC
- V
CC
- V
CC
- V
CC
-
1.525 1.425 1.325 1.525 1.425 1.325 1.525 1.425 1.325
V
AC ELECTRICAL CHARACTERISTICS
(V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50Ω
±1%
to V
CC
- 2V, V
IHD
- V
ILD
= 0.15V to 1V, f
IN
≤
2.5GHz input duty cycle
= 50%, input transition time = 125ps (20% to 80%). Typical values are at V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, f
IN
=
622MHz, input duty cycle = 50%, input transition time = 125ps (20% to 80%), unless otherwise noted.) (Note 7)
PARAMETER
Differential
Input-to-Output
Delay
SEL_-to-Output
Delay
Output-to-
Output Skew
Input-to-Output
Skew
Part-to-Part Skew
SYMBOL
t
PLHD
,
t
PHLD
t
PLH2
,
t
PHL2
t
SKOO
t
SKIO
t
SKPP
CONDITIONS
-40°C
MIN
222
TYP
309
MAX
377
MIN
238
+25°C
TYP
318
MAX
395
MIN
254
+85°C
TYP
333
MAX
431
UNITS
Figure 2
ps
Figure 4, input
transition time = 500ps
(20% to 80%) (Note 8)
MAX9387 only, Figure 5
(Note 9)
Figure 6 (Note 10)
(Note 11)
3.9
7.3
1.64
1.4
1.6
ns
26
53
111
3.9
7.7
14
50
130
8.0
8.3
26
50
133
ps
ps
ps
_______________________________________________________________________________________
3
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
MAX9386/MAX9387/MAX9388
AC ELECTRICAL CHARACTERISTICS (continued)
V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50Ω
±1%
to V
CC
- 2V, V
IHD
- V
ILD
= 0.15V to 1V, f
IN
≤
2.5GHz input duty cycle
= 50%, input transition time = 125ps (20% to 80%). Typical values are at V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, f
IN
=
622MHz, input duty cycle = 50%, input transition time = 125ps (20% to 80%), unless otherwise noted.) (Note 7)
PARAMETER
Added Random
Jitter (Note 12)
Added
Deterministic
Jitter (Note 12)
Switching
Frequency
Select Toggle
Frequency
Output Rise and
Fall Time (20%
to 80%)
SYMBOL
CONDITIONS
Clock
pattern
PRBS
2
23
- 1
f
IN
= 156MHz
f
IN
= 622MHz
f
IN
= 2.5GHz
f
IN
= 156Mbps
f
IN
= 622Mbps
2.7
100
T
DJ
-40°C
MIN
TYP
0.3
0.3
0.3
33
21
MAX
1.15
1.15
1.15
95
61
2.7
100
MIN
+25°C
TYP
0.3
0.3
0.3
33
21
MAX
1.15
1.15
1.15
95
61
2.7
100
MIN
+85°C
TYP
0.3
0.3
0.3
33
21
MAX
1.15
1.15
1.15
95
ps
P-P
61
GHz
MHz
ps(RMS)
UNITS
t
RJ
f
MAX
f
SEL
V
OH
- V
OL
≥
300mV,
Figure 2
t
R
, t
F
Figure 2
67
105
138
74
117
155
81
128
165
ps
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
Measurements are made with the device in thermal equilibrium.
Current into an I/O pin is defined as positive. Current out of an I/O pin is defined as negative.
DC parameters production tested at T
A
= +25°C and guaranteed by design over the full operating temperature range.
Single-ended data input operation using V
BB_
is limited to (V
CC
- V
EE
)
≥
3.0V.
Use V
BB_
only for inputs that are on the same device as the V
BB_
reference.
All pins open except V
CC
and V
EE
.
Guaranteed by design and characterization. Limits are set at ±6 sigma.
Measured from the 50% point of the input signal with the 50% point equal to V
BB
, to the 50% point of the output signal.
Measured between outputs of the same part at the signal crossing points for a same-edge transition.
Measured between input-to-output paths of the same part at the signal crossing points for a same-edge transition of the
differential input signal.
Note 11:
Measured between outputs of different parts at the signal crossing points under identical conditions for a same-edge
transition.
Note 12:
Device jitter added to the differential input signal.
4
_______________________________________________________________________________________
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
Typical Operating Characteristics
(V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, outputs loaded with 50Ω
±1%
to V
CC
- 2V, f
IN
= 1.5GHz, input duty cycle =
50%, input transition time = 125ps (20% to 80%), unless otherwise noted.)
MAX9386/MAX9387/MAX9388
SUPPLY CURRENT (I
EE
)
vs. TEMPERATURE
MAX9386 toc01
OUTPUT AMPLITUDE (V
OH
- V
OL
)
vs. FREQUENCY
MAX9386 toc02
OUTPUT RISE/FALL
vs. TEMPERATURE
MAX9386 toc03
60
55
SUPPLY CURRENT (mA)
50
45
40
35
30
25
20
-40
-15
10
35
60
1000
150
140
RISE/FALL TIME (ps)
130
120
110
RISE
100
90
FALL
800
OUTPUT VOLTAGE (mV)
600
400
200
0
85
0
400
800
1200 1600 2000 2400 2800
TEMPERATURE (°C)
FREQUENCY (MHz)
-40
-15
10
35
60
85
TEMPERATURE (°C)
DIFFERENTIAL PROPAGATION DELAY
vs. INPUT HIGH VOLTAGE
MAX9386 toc04
DIFFERENTIAL PROPAGATION DELAY
vs. TEMPERATURE
MAX9386 toc05
370
360
PROPAGATION DELAY (ps)
350
340
330
320
310
300
290
280
270
1.2
1.5
1.8
2.1
2.4
2.7
t
PLHD
t
PHLD
350
340
TRANSITION TIME (ps)
330
320
310
300
290
280
t
PLHD
t
PHLD
3.0
-40
-15
10
35
60
85
INPUT HIGH VOLTAGE (V)
TEMPERATURE (°C)
_______________________________________________________________________________________
5
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