19-1789; Rev 2; 1/12
Single/Dual, Ultra-Fast, ECL-Output
Comparators with Latch Enable
General Description
The MAX9691/MAX9692/MAX9693 are ultra-fast ECL
comparators capable of very short propagation delays.
Their design maintains the excellent DC matching char-
acteristics normally found only in slower comparators.
The MAX9691/MAX9692/MAX9693 have differential
inputs and complementary outputs that are fully com-
patible with ECL-logic levels. Output current levels are
capable of driving 50Ω terminated transmission lines.
The ultra-fast operation makes signal processing possi-
ble at frequencies in excess of 600MHz.
The MAX9692/MAX9693 feature a latch-enable (LE)
function that allows the comparator to be used in a
sample-hold mode. When LE is ECL high, the compara-
tor functions normally. When LE is driven ECL low, the
outputs are forced to an unambiguous ECL-logic state,
dependent on the input conditions at the time of the
latch input transition. If the latch-enable function is not
used on either of the two comparators, the appropriate
LE input must be connected to ground; the companion
LE
input must be connected to a high ECL logic level.
These devices are available in SO, QSOP, and tiny
µMAX
®
packages for added space savings.
o
1.2ns Propagation Delay
o
100ps Propagation Delay Skew
o
150ps Dispersion
o
0.5ns Latch Setup Time
o
0.5ns Latch-Enable Pulse Width
o
Available in
µMAX
and QSOP Packages
o
+5V, -5.2V Power Supplies
Features
MAX9691/MAX9692/MAX9693
Ordering Information
PART
MAX9691EUA
MAX9691ESA
TEMP
RANGE
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
8 µMAX
8 SO
MAX9691EPA
-40°C to +85°C
8 PDIP
Note:
Devices are also available in lead(Pb)-free/RoHS-compli-
ant packages. Specify lead-free by adding a “+” after the part
number.
Ordering Information continued at the end of data sheet.
Selector Guide
________________________Applications
High-Speed Line Receivers
Peak Detectors
Threshold Detectors
High-Speed Triggers
MAX9692
1
Yes
MAX9691
PART
COMPARATORS
PER PACKAGE
1
LATCH
ENABLE
No
PIN-
PACKAGE
8
µMAX,
8 SO, 8 PDIP
10
µMAX,
16 SO, 16 PDIP
16 QSOP,
16 SO, 16 PDIP
MAX9693
2
Yes
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Pin Configurations appear at end of data sheet.
_________________________________________________________
Functional Diagrams
IN+
Q OUT
NONINVERTING
INPUT
Q OUT
INVERTING
INPUT
INVERTING
INPUT
NONINVERTING
INPUT
IN-
R
L
MAX9691
V
T
R
L
Q OUT
Q OUT
RL
LE LE
RL
RL
RL
LE LE
V
T
MAX9693
MAX9693
LATCH ENABLE
LATCH ENABLE
THE OUTPUTS ARE OPEN EMITTERS, REQUIRING EXTERNAL PULLDOWN
RESISTORS. THESE RESISTORS MAY BE IN THE RANGE OF 50Ω TO 200Ω
CONNECTED TO -2.0V, OR 240Ω TO 2000Ω CONNECTED TO -5.2V.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Single/Dual, Ultra-Fast, ECL-Output
Comparators with Latch Enable
MAX9691/MAX9692/MAX9693
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (V
CC
) ...............................................-0.3V to +6V
Supply Voltage (V
EE
)................................................-6V to +0.3V
Input Voltage....................................(V
CC
+ 0.3V) to (V
EE
- 0.3V)
Output Short-Circuit Duration ....................................Continuous
Differential Input Voltage ......................................................±5V
Latch Enable ...............................................(V
EE
- 0.3V) to +0.3V
Output Current ....................................................................50mA
Input Current ....................................................................±25mA
Continuous Power Dissipation (T
A
= +70°C)
8-Pin µMAX (derate 4.8mW/°C above 70°C)...............387.8mW
8-Pin SO (derate 7.4mW/°C above +70°C)..................588.2mW
8-Pin PDIP (derate 9.1mW/°C above +70°C) ...........727.3mW
10-Pin µMAX (derate 8.8mW/°C above +70°C) ...........707.3mW
16-Pin QSOP (derate 9.6mW/°C above +70°C) .........771.5mW
16-Pin SO (derate 13.3mW/°C above +70°C) ..........1066.7mW
16-Pin PDIP (derate 10.5mW/°C above +70°C) .......842.1mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range .............................-55°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +5V, V
EE
= -5.2V, R
L
= 50Ω to V
T
, V
T
= -2V, LE = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
Input Offset Voltage
Temperature Coefficient
Input Offset Current
Input Bias Current
Input Voltage Range
Common-Mode Rejection Ratio
Positive Power-Supply Rejection
Ratio
Negative Power-Supply
Rejection Ratio
Open-Loop Gain
Differential Input Resistance
Differential Input Clamp Voltage
Input Capacitance
Latch Enable Input Current High
Latch Enable Input Current Low
Latch Enable Logic High Voltage
Latch Enable Logic Low Voltage
Logic Output High Voltage
C
IN
I
IH(LE)
I
IL(LE)
V
IH(LE)
V
IL(LE)
T
A
= T
MIN
V
OH
T
A
= T
MAX
T
A
= +25°C
T
A
= T
MIN
Logic Output Low Voltage
V
OL
T
A
= T
MAX
T
A
= +25°C
-1.2
-0.99
-1.06
-1.93
-1.89
-1.89
V
IH(LE)
= 1.1V
V
IL(LE)
= 1.5V
-1.1
-1.5
-0.87
-0.70
-0.76
-1.57
-1.51
-1.55
V
V
SYMBOL
V
OS
∆V
OS
/∆T
I
OS
I
B
V
CM
CMRR
+PSRR
-PSRR
AOL
R
IN
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
Note 1
-2.5V
≤
V
CM
≤
+3.0V (Note 1)
4.5V
≤
V
CC
≤
5.5V
-5.7V
≤
V
EE
≤
-4.7V
V
CM
= 0V
-10mV < V
IN
< 10mV
-2.5
60
80
60
60
70
60
1.7
3
60
0.2
120
10
6
T
A
= +25°C
T
A
= T
MIN
to T
MAX
CONDITIONS
MIN
-6.5
-11.5
10
0.2
5
8
20
30
+3.0
TYP
MAX
6.5
+11.5
UNITS
mV
µV/°C
µA
µA
V
dB
dB
dB
dB
kΩ
V
pF
µA
µA
V
V
2
_______________________________________________________________________________________
Single/Dual, Ultra-Fast, ECL-Output
Comparators with Latch Enable
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +5V, V
EE
= -5.2V, R
L
= 50Ω to V
T
, V
T
= -2V, LE = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SYMBOL
MAX9693
Supply Current
I
CC
MAX9691/
MAX9692
CONDITIONS
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
18
MIN
TYP
34
MAX
46
50
26
36
mA
UNITS
MAX9691/MAX9692/MAX9693
AC ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
EE
= -5.2V, R
L
= 50Ω to V
T
, V
T
= -2V, LE = 0, T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
MAX9691/MAX9692/MAX9693
Propagation Delay (Notes 1, 2)
Rise/Fall Time
Propagation Delay Skew
Dispersion
MAX9692/MAX9693
Latch-Enable Time (Note 1)
Latch-Enable Pulse Width (Note 1)
Setup Time (Note 1)
Hold Time (Note 1)
Channel-to-Channel
Propagation Match
T
LE
(±)
t
pw(LE)
t
s
t
h
t
PDM
Note 2 (MAX9693 only)
T
A
= +25°C
T
A
= T
MIN
to T
MAX
0.5
0.5
0.5
100
1.0
1.8
2.0
1.0
1.0
1.0
ns
ns
ns
ns
ps
t
pd+
, t
pd-
t
r
, t
f
∆
PD
P
DSP
V
OD
from 10mV to 100mV
T
A
= +25°C
T
A
= T
MIN
to T
MAX
10% to 90%
500
100
150
1.2
1.8
2.0
ns
ps
ps
ps
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Guaranteed by design.
Note 2:
V
IN
= 100mV, V
OD
= 10mV.
_______________________________________________________________________________________
3
Single/Dual, Ultra-Fast, ECL-Output
Comparators with Latch Enable
MAX9691/MAX9692/MAX9693
Typical Operating Characteristics
(V
CC
= +5V, V
EE
= -5.2V, R
L
= 50Ω to V
T
, V
T
= -2V, V
OD
= 10mV, T
A
= +25°C, unless otherwise noted.)
WORST-CASE PROPAGATION DELAY
vs. INPUT OVERDRIVE
MAX9691/3-01
WORST-CASE PROPAGATION DELAY
vs. SOURCE IMPEDANCE
MAX9691/3-02
WORST-CASE PROPAGATION DELAY
vs. C
LOAD
MAX9691/3-03
1400
6000
5000
PROPAGATION DELAY (ps)
4000
3000
2000
1000
0
1800
1600
PROPAGATION DELAY (ps)
1400
1200
1000
800
600
PROPAGATION DELAY (ps)
1200
1000
800
600
400
0
10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
0
50 100 150 200 250 300 350 400 450 500
SOURCE IMPEDANCE (Ω)
0
5
10
15
20
25
C
LOAD
(pF)
WORST-CASE PROPAGATION DELAY
vs. TEMPERATURE
MAX9691/3-04
OUTPUT HIGH VOLTAGE
vs. TEMPERATURE
MAX9691/3-05
OUTPUT LOW VOLTAGE
vs. TEMPERATURE
-1.62
-1.64
-1.66
V
OL
(V)
-1.68
-1.70
-1.72
R
PULLDOWN
= 200Ω
R
PULLDOWN
= 100Ω
MAX9691/3-06
1400
1300
PROPAGATION DELAY (ps)
1200
1100
1000
900
800
700
V
OD
= 100mV
600
-40
-15
10
35
60
-0.6
-1.60
-0.7
R
PULLDOWN
= 200Ω
R
PULLDOWN
= 100Ω
V
OH
(V)
-0.8
-0.9
R
PULLDOWN
= 50Ω
-1.0
-1.74
-1.76
-1.78
R
PULLDOWN
= 50Ω
-1.1
85
-40
-15
10
35
60
85
TEMPERATURE (°C)
TEMPERATURE (°C)
-1.80
-40
-15
10
35
60
85
TEMPERATURE (°C)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX9691/3-08
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX9691/3-09
INPUT BIAS CURRENT
vs. DIFFERENTIAL INPUT VOLTAGE
4000
INPUT BIAS CURRENT (µA)
3000
2000
1000
0
-1000
-2000
-3000
-4000
-5000
MAX9691/3-10
2000
1500
INPUT OFFSET VOLTAGE (µV)
1000
500
0
-500
8.0
7.5
INPUT BIAS CURRENT (µA)
7.0
6.5
6.0
5.5
5.0
4.5
4.0
5000
-1000
-1500
-2000
-40
-15
10
35
60
85
TEMPERATURE (°C)
-40
-15
10
35
60
85
-5
-4
-3
-2
-1
0
1
2
3
4
5
TEMPERATURE (°C)
DIFFERENTIAL INPUT VOLTAGE (V)
4
_______________________________________________________________________________________
Single/Dual, Ultra-Fast, ECL-Output
Comparators with Latch Enable
Typical Operating Characteristics (continued)
(V
CC
= +5V, V
EE
= -5.2V, R
L
= 50Ω to V
T
, V
T
= -2V, V
OD
= 10mV, T
A
= +25°C, unless otherwise noted.)
PROPAGATION DELAY
MAX9691/3-11
MAX9691/MAX9692/MAX9693
100MHz OUTPUT RESPONSE
MAX9691/3-12
V
IN
= 100mV
V
OD
= 10mV
V
IN
200mV/div
Q OUT
200mV/div
-1.0V
-1.8V
-1.0V
Q OUT - Q OUT
200mV/div
Q OUT
200mV/div
-1.8V
1ns/div
1ns/div
Pin Description
PIN
MAX9691
1
2
3
4
5
6
7
8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
MAX9692
µMAX
1
2
3
6
7
8
9
10
4
5
—
—
—
—
—
—
—
—
—
—
—
—
—
MAX9692
PDIP/SO
2
3
4
8
11
12
16
1
5, 7, 9, 10,
13, 14, 15
6
—
—
—
—
—
—
—
—
—
—
—
—
—
MAX9693
11
—
—
6
—
—
—
—
—
—
1
2
3, 14
4
5
7
8
9
10
12
13
15
16
NAME
V
CC
IN+
IN-
V
EE
Q OUT
Q
OUT
GND2
GND1
N.C.
LE
Q OUTA
Q
OUTA
GND
LEA
LEA
INA-
INA+
INB+
INB-
LEB
LEB
Q
OUTB
Q OUTB
FUNCTION
Positive Supply. Bypass to GND with a 0.1µF capacitor.
Positive Input
Negative Input
Negative Supply. Bypass to GND with a 0.1µF capacitor.
Output
Complimentary Output
Device Ground
Device Ground
No Connection. Not internally connected.
Latch Enable Input
Channel A Output
Channel A Complementary Output
Device Ground
Channel A Latch Enable Input
Channel A Latch Enable Complementary Input
Channel A Negative Input
Channel A Positive Input
Channel B Positive Input
Channel B Negative Input
Channel B Latch Enable Complementary Input
Channel B Latch Enable Input
Channel B Complementary Output
Channel B Output
_______________________________________________________________________________________
5
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