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.
Applications
High-Speed Telecom and Datacom Applications
Central Office Backplane Clock Distribution
DSLAM/DLC
Features
o 318ps (typ) Propagation Delay
o >2.7GHz Toggle Frequency
o 0.3ps(RMS) Random Jitter
o <14ps (max) at +25C 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)
MAX9386/MAX9387/MAX9388
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
________________________________________________________________ Maxim Integrated Products
1
19-2617; Rev 1; 12/02
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.
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
SELECTION
MAX9386EUP
-40
C to +85C 20 TSSOP
5:1 mux with 1
output buffer
MAX9386EEP*
-40
C to +85C 20 QSOP
5:1 mux with 1
output buffer
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
V
CC
SEL2
SEL1
SEL0
D1
D1
DO
DO
TOP VIEW
Q
Q
V
CC
V
BB1
D3
D3
D2
D2
12
11
9
10
V
BB2
V
EE
D4
D4
MAX9386
TSSOP/QSOP
Pin Configurations
Pin Configurations continued at end of data sheet.
Ordering Information continued at end of data sheet.
*Future product--contact factory for availability.
MAX9386/MAX9387/MAX9388
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
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 ...............................................600A
Continuous Power Dissipation (T
A
= +70C)
20-Lead TSSOP (derate 11.0mW/C above +70C) ....880mW
JA
in Still Air ...........................................................+91C/W
JC
...........................................................................+20C/W
24-Lead TSSOP (derate 12.2mW/C above +70C) ....976mW
JA
in Still Air ...........................................................+82C/W
JC
...........................................................................+15C/W
20-Lead QSOP (derate 9.1mW/C above +70C) .......727mW
JA
in Still Air .........................................................+110C/W
JC
...........................................................................+34C/W
24-Lead QSOP (derate 9.5mW/C above +70C) .......762mW
JA
in Still Air .........................................................+105C/W
JC
...........................................................................+34C/W
Operating Temperature Range ...........................-40C to +85C
Junction Temperature ......................................................+150C
Storage Temperature Range .............................-65C to +150C
ESD Protection
Human Body Model (D_, D_, Q_, Q_, SEL_, V
BB_
) .............
2kV
Lead Temperature (soldering, 10s) .................................+300C
DC ELECTRICAL CHARACTERISTICS
(V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50
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 14)
-40
C
+25
C
+85
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
INPUT (D_, D_, SEL_)
Single-Ended
Input High
Voltage
V
IH
V
BB
connected to
the unused input
(Figure 1)
V
CC
-
1.225
V
CC
-
0.880
V
CC
-
1.225
V
CC
-
0.880
V
CC
-
1.225
V
CC
-
0.880
V
Single-Ended
Input Low
Voltage
V
IL
V
BB
connected to
the unused input
(Figure 1)
V
CC
-
1.945
V
CC
-
1.625
V
CC
-
1.945
V
CC
-
1.625
V
CC
-
1.945
V
CC
-
1.625
V
Differential Input
High Voltage
V
IHD
Figure 1
V
EE
+
1.2
V
CC
V
EE
+
1.2
V
CC
V
EE
+
1.2
V
CC
V
Differential Input
Low Voltage
V
ILD
Figure 1
V
EE
V
CC
-
0.095
V
EE
V
CC
-
0.095
V
EE
V
CC
-
0.095
V
V
CC
- V
EE
< 3.0V
0.095
V
CC
-
V
EE
0.095
V
CC
-
V
EE
0.095
V
CC
-
V
EE
Differential Input
Voltage
V
I H D
-
V
I LD
Figure 1
V
CC
- V
EE
3.0V
0.095
3.000
0.095
3.000
0.095
3.000
V
Input Current
I
IN
V
IH,
V
IL,
V
IHD,
V
ILD
-100
+100
-100
+100
-100
+100
A
MAX9386/MAX9387/MAX9388
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
_______________________________________________________________________________________
3
AC ELECTRICAL CHARACTERISTICS
(V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50
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)
-40
C
+25
C
+85
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Differential
Input-to-Output
Delay
t
PLHD
,
t
PHLD
Figure 2
222
309
377
238
318
395
254
333
431
ps
SEL_-to-Output
Delay
t
PLH2
,
t
PHL2
Figure 4, input
transition time = 500ps
(20% to 80%) (Note 8)
1.64
1.4
1.6
ns
Output-to-
Output Skew
t
SKOO
MAX9387 only, Figure 5
(Note 9)
3.9
26
3.9
14
8.0
26
ps
Input-to-Output
Skew
t
SKIO
Figure 6 (Note 10)
7.3
53
7.7
50
8.3
50
ps
P ar t- to- P ar t S kew
t
SKPP
(Note 11)
111
130
133
ps
DC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50
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 14)
-40
C
+25
C
+85
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
OUTPUT (Q_, Q_)
Single-Ended
Output High
Voltage
V
OH
Figure 2
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
Single-Ended
Output Low
Voltage
V
OL
Figure 2
V
CC
-
1.945
V
CC
-
1.695
V
CC
-
1.945
V
CC
-
1.695
V
CC
-
1.945
V
CC
-
1.695
V
Differential
Output Voltage
V
OH
-
V
OL
Figure 2
650
830
650
840
650
840
mV
REFERENCE OUTPUT (V
BB
_
)
Reference
Voltage Output
V
BB1
,
V
BB2
I
BB1
+ I
BB2
=
0.5mA
(Note 5)
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
V
CC
-
1.325
V
POWER SUPPLY
MAX9386
34
50
36
50
38
50
MAX9387
40
60
42
60
45
60
Supply Current
(Note 6)
I
EE
MAX9388
31
47
33
47
35
47
mA
MAX9386/MAX9387/MAX9388
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
4
_______________________________________________________________________________________
Note 1:
Measurements are made with the device in thermal equilibrium.
Note 2:
Current into an I/O pin is defined as positive. Current out of an I/O pin is defined as negative.
Note 3:
DC parameters production tested at T
A
= +25C and guaranteed by design over the full operating temperature range.
Note 4:
Single-ended data input operation using V
BB_
is limited to (V
CC
- V
EE
)
3.0V.
Note 5:
Use V
BB_
only for inputs that are on the same device as the V
BB_
reference.
Note 6:
All pins open except V
CC
and V
EE
.
Note 7:
Guaranteed by design and characterization. Limits are set at 6 sigma.
Note 8:
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.
Note 9:
Measured between outputs of the same part at the signal crossing points for a same-edge transition.
Note 10: 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.
AC ELECTRICAL CHARACTERISTICS (continued)
V
CC
- V
EE
= 2.375V to 5.5V, outputs loaded with 50
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)
-40
C
+25
C
+85
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
f
IN
= 156M H z
0.3
1.15
0.3
1.15
0.3
1.15
f
IN
= 622M H z
0.3
1.15
0.3
1.15
0.3
1.15
Added Random
Jitter (Note 12)
t
RJ
Clock
pattern
f
IN
= 2.5GH z
0.3
1.15
0.3
1.15
0.3
1.15
ps(RMS)
f
IN
= 156M b p s
33
95
33
95
33
95
Added
Deterministic
Jitter (Note 12)
T
DJ
PRBS
2
23
- 1
f
IN
= 622M b p s
21
61
21
61
21
61
ps
P-P
Switching
Frequency
f
MAX
V
OH
- V
OL
300mV,
Figure 2
2.7
2.7
2.7
GHz
Select Toggle
Frequency
f
SEL
100
100
100
MHz
Output Rise and
Fall Time (20%
to 80%)
t
R
, t
F
Figure 2
67
105
138
74
117
155
81
128
165
ps
MAX9386/MAX9387/MAX9388
Differential 5:1 or 4:1 ECL/PECL Multiplexers
with Single/Dual Output Buffers
_______________________________________________________________________________________
5
Typical Operating Characteristics
(V
CC
- V
EE
= 3.3V, V
IHD
= V
CC
- 1V, V
ILD
= V
CC
- 1.5V, outputs loaded with 50
1% to V
CC
- 2V, f
IN
= 1.5GHz, input duty cycle =
50%, input transition time = 125ps (20% to 80%), unless otherwise noted.)
SUPPLY CURRENT (I
EE
)
vs. TEMPERATURE
MAX9386 toc01
TEMPERATURE (
C)
SUPPLY CURRENT (mA)
60
35
-15
10
25
30
35
40
45
50
55
60
20
-40
85
OUTPUT AMPLITUDE (V
OH
- V
OL
)
vs. FREQUENCY
MAX9386 toc02
FREQUENCY (MHz)
OUTPUT VOLTAGE (mV)
2400
2000
1600
1200
800
400
200
400
600
800
1000
0
0
2800
OUTPUT RISE/FALL
vs. TEMPERATURE
MAX9386 toc03
TEMPERATURE (
C)
RISE/FALL TIME (ps)
60
35
10
-15
100
110
120
130
140
150
90
-40
85
FALL
RISE
DIFFERENTIAL PROPAGATION DELAY
vs. INPUT HIGH VOLTAGE
MAX9386 toc04
INPUT HIGH VOLTAGE (V)
PROPAGATION DELAY (ps)
2.7
2.4
2.1
1.8
1.5
280
290
300
310
320
330
340
350
360
370
270
1.2
3.0
t
PLHD
t
PHLD
DIFFERENTIAL PROPAGATION DELAY
vs. TEMPERATURE
MAX9386 toc05
TEMPERATURE (
C)
TRANSITION TIME (ps)
60
35
10
-15
290
300
310
320
330
340
350
280
-40
85
t
PLHD
t
PHLD
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