19-1129; Rev 5; 2/07
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
_________________General Description
The MAX961–MAX964/MAX997/MAX999 are low-power,
ultra-high-speed comparators with internal hysteresis.
These devices are optimized for single +3V or +5V
operation. The input common-mode range extends
100mV Beyond-the-Rails
™
, and the outputs can sink
or source 4mA to within 0.52V of GND and V
CC
.
Propagation delay is 4.5ns (5mV overdrive), while sup-
ply current is 5mA per comparator.
The MAX961/MAX963/MAX964 and MAX997 have a
shutdown mode in which they consume only 270µA
supply current per comparator. The MAX961/MAX963
provide complementary outputs and a latch-enable fea-
ture. Latch enable allows the user to hold a valid com-
parator output. The MAX999 is available in a tiny
SOT23-5 package. The single MAX961/MAX997 and
dual MAX962 are available in space-saving 8-pin
µMAX
®
packages.
____________________________Features
♦
Ultra-Fast, 4.5ns Propagation Delay
♦
Ideal for +3V and +5V Single-Supply Applications
♦
Beyond-the-Rails Input Voltage Range
♦
Low, 5mA Supply Current (MAX997/MAX999)
♦
3.5mV Internal Hysteresis for Clean Switching
♦
Output Latch (MAX961/MAX963)
♦
TTL/CMOS-Compatible Outputs
♦
270µA Shutdown Current per Comparator
(MAX961/MAX963/MAX964/MAX997)
♦
Available in Space-Saving Packages:
5-Pin SOT23 (MAX999)
8-Pin µMAX (MAX961/MAX962/MAX997)
16-Pin QSOP (MAX964)
MAX961–MAX964/MAX997/MAX999
________________________Applications
Single 3V/5V Systems
Portable/Battery-Powered Systems
Threshold Detectors/Discriminators
GPS Receivers
Line Receivers
Zero-Crossing Detectors
High-Speed Sampling Circuits
_______________Ordering Information
PART
MAX961ESA
MAX961EUA-T
MAX962ESA
MAX962EUA-T
MAX963ESD
MAX964ESE
MAX964EEE
MAX997ESA
MAX997EUA-T
MAX999EUA-T
PIN-PACKAGE
8 SO
8 µMAX-8
8 SO
8 µMAX-8
14 SO
16 Narrow SO
16 QSOP
8 SO
8 µMAX-8
5 SOT23-5
TOP
MARK
—
—
—
—
—
—
—
—
—
—
PKG
CODE
S8-2
U8-1
S8-2
U8-1
S14-1
S16-1
E16-1
S8-2
U8-1
U5-1
______________________Selector Guide
COMPLEMENTARY
OUTPUT
NO. OF
COMPARATORS
PIN-PACKAGE
SHUTDOWN
LATCH
ENABLE
Note:
All devices are specified over the -40°C to +85°C operating
temperature range.
PART
__________________Pin Configurations
TOP VIEW
Q
1
5
V
CC
MAX961
MAX962
MAX963
MAX964
MAX997
MAX999
1
2
2
4
1
1
Yes
No
Yes
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
No
Yes
No
No
No
8 SO/µMAX
8 SO/µMAX
14 SO
16 SO/QSOP
8 SO/µMAX
5 SOT23
IN+
3
4
IN-
GND
2
MAX999
SOT23-5
Pin Configurations continued at end of data sheet.
1
Beyond-the-Rails is a trademark and µMAX is a registered
trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
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.
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
MAX961–MAX964/MAX997/MAX999
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
to GND................................... -0.3V to +6V
All Other Pins..............................................-0.3V to (V
CC
+ 0.3V)
Current into Input Pins ......................................................±20mA
Duration of Output Short Circuit to GND or V
CC
.......Continuous
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.1mW/°C above +70°C).......571mW/°C
8-Pin SO (derate 5.88mW/°C above +70°C)...........471mW/°C
8-Pin µMAX (derate 4.10mW/°C above +70°C) ......330mW/°C
14-Pin SO (derate 8.33mW/°C above +70°C).........667mW/°C
16-Pin SO (derate 8.70mW/°C above +70°C).........696mW/°C
16-Pin QSOP (derate 8.33mW/°C above +70°C)....667mW/°C
Operating Temperature Range
MAX96_E/MAX99_E.........................................-40°C to +85°C
Storage Temperature Range ............................ -65°C to +160°C
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.
ELECTRICAL CHARACTERISTICS
(V
CC
= +2.7V to +5.5V, V
CM
= 0V, C
OUT
= 5pF, V
SHDN
= 0V, V
LE
= 0V, unless otherwise noted.) (Note 1)
PARAMETER
Supply Voltage
Input Common-Mode Voltage
Range
SYMBOL
V
CC
V
CMR
CONDITIONS
Inferred by PSRR
(Note 2)
V
CM
= - 0.1V
or 5.1V,
V
CC
= 5V
(Note 3)
µMAX,
SOT23
All other
packages
µMAX,
SOT23
All other
packages
µMAX,
SOT23
All other
packages
2.1
3
R
IND
R
INCM
V
CC
= 5V
V
CC
= 5V
V
CC
= 5V,
V
CM
= -0.1V
to 5.1V
(Note 5)
µMAX,
SOT23
All other
packages
V
CC
- 0.52
0.52
30
60
8
130
0.1
0.1
0.05
0.3
0.3
0.3
V
CC
- 0.52
0.52
1.0
mV/V
0.5
0.3
mV/V
V
V
mA
T
A
= +25°C
MIN
2.7
-0.1
±2.0
±2.0
3.5
V
CM
= - 0.1V
or 5.1V,
V
CC
= 5V
(Note 4)
V
IN+
=
V
IN-
= 0V
or V
CC,
V
CC
= 5V
±0.5
±0.5
±1.5
±1.5
±15
±15
±4.5
mV
±2.0
±30
µA
±15
V
pF
kΩ
kΩ
TYP
MAX
5.5
V
CC
+ 0.1
±3.5
±3.5
T
MIN
to T
MAX
MIN
2.7
-0.1
MAX
5.5
V
CC
+ 0.1
±6.5
mV
±4.0
mV
UNITS
V
V
Input-Referred Trip Points
V
TRIP
Input-Referred Hysteresis
Input Offset Voltage
V
OS
Input Bias Current
I
B
Differential Input Clamp Voltage
Input Capacitance
Differential Input Impedance
Common-Mode Input Impedance
V
CC
= 5.5V, V
IN-
= 0V,
I
IN
+ = 100µA
Common-Mode Rejection Ratio
CMRR
Power-Supply Rejection Ratio
Output High Voltage
Output Low Voltage
Capacitive Slew Current
PSRR
V
OH
V
OL
V
CM
= 0V (Note 6)
I
SOURCE
= 4mA
I
SINK
= 4mA
V
OUT
= 1.4V, V
CC
= 2.7V
2
_______________________________________________________________________________________
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +2.7V to +5.5V, V
CM
= 0V, C
OUT
= 5pF, V
SHDN
= 0V, V
LE
= 0V, unless otherwise noted.) (Note 1)
PARAMETER
Output Capacitance
Supply Current
per Comparator
Shutdown Supply Current
per Comparator
Shutdown Output
Leakage Current
Rise/Fall Time
Logic Input High
Logic Input Low
Logic Input Current
Propagation Delay
Differential Propagation
Delay
Propagation-Delay Skew
Data-to-Latch Setup Time
Latch-to-Data Hold Time
Latch Pulse Width
Latch Propagation Delay
Shutdown Time
Shutdown Disable Time
t
R
, t
F
V
IH
V
IL
I
IL
, I
IH
t
PD
t
PD
t
SKEW
t
SU
t
H
t
LPW
t
LPD
t
OFF
t
ON
V
LOGIC
= 0V or V
CC
5mV overdrive (Note 7)
Between any two channels or
outputs (Q/Q)
Between t
PD-
and t
PD+
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
Delay until output is high-Z
(>10kΩ)
Delay until output is valid
150
250
4.5
0.3
0.3
5
5
5
10
5
5
5
10
MAX961/MAX963, V
CC
= 5V
I
CC
MAX962/MAX964, V
CC
= 5V
MAX997/MAX999, V
CC
= 5V
I
SHDN
MAX961/MAX963/MAX964/
MAX997, V
CC
= 5V
MAX961/MAX963/MAX964/
MAX997, V
OUT
= 0.5V and
V
CC
- 0.5V
V
CC
= 5V
(V
CC
/ 2)
+ 0.4
(V
CC
/ 2)
- 0.4
±15
7
2.3
(V
CC
/ 2)
+ 0.4
(V
CC
/ 2)
- 0.4
±30
8.5
SYMBOL
CONDITIONS
T
A
= +25°C
MIN
TYP
4
7.2
5
5
0.27
11
8
6.5
0.5
11
9
6.5
0.5
mA
mA
MAX
T
MIN
to T
MAX
MIN
MAX
UNITS
pF
MAX961–MAX964/MAX997/MAX999
1
20
µA
ns
V
V
µA
ns
ns
ns
ns
ns
ns
ns
ns
ns
Note 1:
The MAX961EUA/MAX962EUA/MAX997EUA/MAX999EUK are 100% production tested at T
A
= +25°C; all temperature specifica-
tions are guaranteed by design.
Note 2:
Inferred by CMRR. Either input can be driven to the absolute maximum limit without false output inversion, provided that the other
input is within the input voltage range.
Note 3:
The input-referred trip points are the extremities of the differential input voltage required to make the comparator output change
state. The difference between the upper and lower trip points is equal to the width of the input-referred hysteresis zone. (See
Figure 1.)
Note 4:
Input offset voltage is defined as the mean of the trip points.
Note 5:
CMRR = (V
OSL
- V
OSH
) / 5.2V, where V
OSL
is the offset at V
CM
= -0.1V and V
OSH
is the offset at V
CM
= 5.1V.
Note 6:
PSRR = (V
OS
2.7 - V
OS
5.5) / 2.8V, where V
OS
2.7 is the offset voltage at V
CC
= 2.7V, and V
OS
5.5 is the offset voltage at
V
CC
= 5.5V.
Note 7:
Propagation delay for these high-speed comparators is guaranteed by design characterization because it cannot be accurately
measured using automatic test equipment. A statistically significant sample of devices is characterized with a 200mV step and
100mV overdrive over the full temperature range. Propagation delay can be guaranteed by this characterization, since DC tests
ensure that all internal bias conditions are correct. For low overdrive conditions, V
TRIP
is added to the overdrive.
Note 8:
Guaranteed by design.
_______________________________________________________________________________________
3
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
MAX961–MAX964/MAX997/MAX999
__________________________________________Typical Operating Characteristics
(V
CC
= +3.0V, C
LOAD
= 5pF, 5mV of overdrive, T
A
= +25°C, unless otherwise noted.)
PROPAGATION DELAY
vs. INPUT OVERDRIVE
MAX997toc01
PROPAGATION DELAY
vs. TEMPERATURE
MAX997toc0202
PROPAGATION DELAY
vs. CAPACITIVE LOAD
MAX997toc03
7.5
7.0
PROPAGATION DELAY (ns)
6.5
6.0
5.5
5.0
4.5
t
PD-
4.0
3.5
0
t
PD+
6.8
6.6
PROPAGATION DELAY (ns)
6.4
6.2
6.0
5.8
5.6
5.4
5.2
5.0
t
PD
+
t
PD
-
8
PROPAGATION DELAY (ns)
7
t
PD-
6
t
PD+
5
4
-40
-20
0
20
40
60
85
0
20
40
60
80
100
120
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
PROPAGATION DELAY
vs. SUPPLY VOLTAGE
MAX997toc04
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
V
OL
(V)
MAX997toc05
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX997toc06
6.0
2.80
2.75
2.70
0.5
PROPAGATION DELAY (ns)
0.4
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
5.5
V
OH
(V)
0.3
t
PD
-
2.65
2.60
0.2
t
PD
+
5.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
SUPPLY VOLTAGE (V)
2.55
2.50
1
10
100
1000
10,000
SOURCE CURRENT (µA)
0.1
0
1
10
100
1000
10,000
SINK CURRENT (µA)
MAX961/MAX963
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
MAX997toc07A
MAX962/MAX964
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
MAX997toc07B
MAX997/MAX999
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
MAX9997toc7C
8.0
7
9
8
SUPPLY CURRENT (mA)
7
6
T
A
= +85°C
5
4
T
A
= -40°C
T
A
= +25°C
SUPPLY CURRENT (mA)
7.0
T
A
= +85°C
T
A
= +25°C
SUPPLY CURRENT (mA)
7.5
6
5
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
6.5
T
A
= -40°C
4
6.0
2
3
4
SUPPLY VOLTAGE (V)
5
6
3
2
3
4
SUPPLY VOLTAGE (V)
5
6
3
2
3
4
SUPPLY VOLTAGE (V)
5
6
4
_______________________________________________________________________________________
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
MAX961–MAX964/MAX997/MAX999
____________________________Typical Operating Characteristics (continued)
(V
CC
= +3.0V, C
LOAD
= 5pF, 5mV of overdrive, T
A
= +25°C, unless otherwise noted.)
MAX961/MAX963/MAX964/MAX997
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
MAX997toc08
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. TEMPERATURE
MAX997toc09
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. SUPPLY VOLTAGE
3
TRIP POINT / V
OS
(mV)
2
1
0
-1
-2
V
OS
V
TRIP+
MAX997toc10
310
SHUTDOWN SUPPLY CURRENT (µA)
V
CC
= 5.0V
3
2
TRIP POINT / V
OS
(mV)
1
V
OS
0
-1
-2
V
TRIP-
-3
V
TRIP+
4
260
210
160
V
CC
= 2.7V
110
-3
-4
20
40
60
85
2
3
4
V
TRIP-
60
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
-40
-20
0
5
6
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT (I
B+
, I
B-
)
vs. COMMON-MODE VOLTAGE
MAX997toc11
8
6
4
I
B+
, I
B-
(µA)
2
0
-2
-4
-6
-8
-1
0
1
2
3
4
5
6
V
CM
(V)
T
A
= -40°C
T
A
= +85°C
T
A
= +25°C
V
CC
= 5.0V
V
IN
= V
OS
NEGATIVE
VALUES
REPRESENT
CURRENT
FLOWING INTO
THE DEVICE
INPUT BIAS CURRENT/INPUT OFFSET
CURRENT vs. TEMPERATURE
INPUT BIAS/OFFSET CURRENT (µA)
I
B-
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-0.5
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
I
OS
I
B+
MAX997toc12
SHORT-CIRCUIT OUTPUT CURRENT
vs. TEMPERATURE
OUTPUT SHORTED
TO V
CC
(SINKING)
MAX997toc13
4.0
140
SHORT-CIRCUIT CURRENT (mA)
120
100
80
60
40
20
0
-40
-20
0
20
40
60
80
TEMPERATURE (°C)
OUTPUT SHORTED
TO GND (SOURCING)
50MHz RESPONSE
V
IN
= 100mV
P-P
V
OS
MAX997toc14
INPUT
50mV/div
OUTPUT
1V/div
GND
5ns/div
_______________________________________________________________________________________
5
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