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.
_________________General Description
The MAX961MAX964/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
TM
, 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 270A
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 MAX
packages.
________________________Applications
Single 3V/5V Systems
Portable/Battery-Powered Systems
Threshold Detectors/Discriminators
GPS Receivers
Line Receivers
Zero-Crossing Detectors
High-Speed Sampling Circuits
____________________________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
270A Shutdown Current per Comparator
(MAX961/MAX963/MAX964/MAX997)
Available in Space-Saving Packages:
5-Pin SOT23 (MAX999)
8-Pin MAX (MAX961/MAX962/MAX997)
16-Pin QSOP (MAX964)
______________________Selector Guide
MAX961MAX964/MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
________________________________________________________________ Maxim Integrated Products
1
19-1129; Rev 4; 3/99
PART
MAX961
ESA
MAX961EUA
MAX962
ESA
-40C to +85C
-40C to +85C
-40C to +85C
TEMP RANGE
PIN-
PACKAGE
8 SO
8 MAX
8 SO
_______________Ordering Information
MAX962EUA
-40C to +85C
8 MAX
PART
NO. OF
COMPARATORS
COMPLEMENTARY
OUTPUT
SHUTDOWN
LATCH
ENABLE
PACKAGE
MAX961
1
Yes
Yes
Yes
8 SO/MAX
MAX962
2
No
No
No
8 SO/MAX
MAX963
2
Yes
Yes
Yes
14 SO
MAX964
4
No
Yes
No
16 SO/QSOP
MAX963
ESD
-40C to +85C
14 SO
MAX964
ESE
-40C to +85C
16 Narrow SO
MAX964EEE
-40C to +85C
16 QSOP
__________________Pin Configurations
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
GND
IN-
IN+
1
5
V
CC
Q
MAX999
SOT23-5
2
3
4
Pin Configurations continued at end of data sheet.
MAX997
1
No
Yes
No
8 SO/MAX
MAX999
1
No
No
No
5 SOT23
MAX997
ESA
-40C to +85C
8 SO
MAX997EUA
-40C to +85C
8 MAX
MAX999
EUK-T
-40C to +85C
5 SOT23-5
TOP VIEW
SOT
TOP MARK
--
--
--
--
--
--
--
--
--
ACAB
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)
MAX961MAX964/MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
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.
Supply Voltage, V
CC
to GND................................... -0.3V to +6V
All Other Pins..............................................-0.3V to (V
CC
+ 0.3V)
Duration of Output Short Circuit to GND or V
CC
.......Continuous
Continuous Power Dissipation (T
A
= +70C)
5-Pin SOT23 (derate 7.1mW/C above +70C).......571mW/C
8-Pin SO (derate 5.88mW/C above +70C)...........471mW/C
8-Pin MAX (derate 4.10mW/C above +70C) ......330mW/C
14-Pin SO (derate 8.33mW/C above +70C).........667mW/C
16-Pin SO (derate 8.70mW/C above +70C).........696mW/C
16-Pin QSOP (derate 8.33mW/C above +70C)....667mW/C
Operating Temperature Range
MAX96_E/MAX99_E.........................................-40C to +85C
Storage Temperature Range ............................ -65C to +160C
Lead Temperature (soldering, 10sec) .............................+300C
V
OUT
= 1.4V, V
CC
= 2.7V
I
SINK
= 4mA
I
SOURCE
= 4mA
V
CM
= 0V (Note 6)
(Note 2)
Inferred by PSRR
V
CC
= 5V
V
CC
= 5V
V
CM
= - 0.1V
or 5.1V,
V
CC
= 5V
(Note 3)
mA
30
60
Capacitive Slew Current
V
0.52
V
OL
Output Low Voltage
V
V
CC
- 0.52
V
OH
Output High Voltage
mV/V
0.05
0.3
PSRR
Power-Supply Rejection Ratio
k
130
R
INCM
Common-Mode Input Impedance
k
8
R
IND
Differential Input Impedance
pF
3
Input Capacitance
V
-0.1
V
CC
+ 0.1
V
CMR
V
2.7
5.5
V
CC
Supply Voltage
Input Common-Mode Voltage
Range
mV
2.0
3.5
V
TRIP
Input-Referred Trip Points
2.0
3.5
T
A
= +25C
0.52
V
CC
- 0.52
0.3
-0.1
V
CC
+ 0.1
2.7
5.5
4.0
6.5
T
MIN
to T
MAX
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MIN
MAX
MAX,
SOT23
All other
packages
MAX,
SOT23
V
CM
= - 0.1V
or 5.1V,
V
CC
= 5V
(Note 4)
All other
packages
mV
0.5
1.5
V
OS
Input Offset Voltage
0.5
1.5
2.0
4.5
V
CC
= 5V,
V
CM
= -0.1V
to 5.1V
(Note 5)
mV/V
0.1
0.3
CMRR
Common-Mode Rejection Ratio
1.0
MAX,
SOT23
V
IN+
=
V
IN-
= 0V
or V
CC,
V
CC
= 5V
All other
packages
A
15
I
B
Input Bias Current
15
15
30
mV
Input-Referred Hysteresis
3.5
V
CC
= 5.5V, V
IN-
= 0V,
I
IN
+ = 100A
V
2.1
Differential Input Clamp Voltage
MAX,
SOT23
All other
packages
0.1
0.3
0.5
MAX961MAX964/MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
_______________________________________________________________________________________
3
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)
Note 1:
The MAX961EUA/MAX962EUA/MAX997EUA/MAX999EUK are 100% production tested at T
A
= +25C; 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.
MAX961/MAX963/MAX964/
MAX997, V
OUT
= 0.5V and
V
CC
- 0.5V
Delay until output is valid
Delay until output is high-Z
(>10k)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
5mV overdrive (Note 7)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
V
LOGIC
= 0V or V
CC
V
CC
= 5V
Between t
PD-
and t
PD+
ns
250
t
ON
Shutdown Disable Time
ns
150
t
OFF
Shutdown Time
ns
10
t
LPD
Latch Propagation Delay
ns
5
t
LPW
Latch Pulse Width
ns
5
t
H
Latch-to-Data Hold Time
ns
5
t
SU
Data-to-Latch Setup Time
ns
0.3
t
SKEW
Propagation-Delay Skew
ns
0.3
t
PD
Differential Propagation
Delay
A
1
Shutdown Output
Leakage Current
pF
4
Output Capacitance
ns
4.5
7
t
PD
Propagation Delay
A
15
I
IL
, I
IH
Logic Input Current
V
(V
CC
/ 2)
- 0.4
V
IL
Logic Input Low
ns
2.3
t
R
, t
F
Rise/Fall Time
V
(V
CC
/ 2)
+ 0.4
V
IH
Logic Input High
T
A
= +25C
10
5
5
5
20
8.5
30
(V
CC
/ 2)
- 0.4
(V
CC
/ 2)
+ 0.4
T
MIN
to T
MAX
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
MIN
MAX
Between any two channels or
outputs (Q/
Q)
MAX962/MAX964, V
CC
= 5V
5
8
9
MAX961/MAX963/MAX964/
MAX997, V
CC
= 5V
mA
0.27
0.5
I
SHDN
Shutdown Supply Current
per Comparator
0.5
MAX997/MAX999, V
CC
= 5V
5
6.5
6.5
MAX961/MAX963, V
CC
= 5V
7.2
11
Supply Current
per Comparator
I
CC
11
mA
MAX961MAX964/MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
4
_______________________________________________________________________________________
__________________________________________Typical Operating Characteristics
(V
CC
= +3.0V, C
LOAD
= 5pF, 5mV of overdrive, T
A
= +25C, unless otherwise noted.)
0
10 20
30 40 50 60 70
80
90 100
INPUT OVERDRIVE (mV)
MAX997toc01
PROPAGATION DELAY
vs. INPUT OVERDRIVE
PROPAGATION DELAY (ns)
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.5
7.0
t
PD-
t
PD+
5.0
-40
85
TEMPERATURE (C)
PROPAGATION DELAY (ns)
20
5.2
5.4
5.6
5.8
6.0
6.2
6.4
6.6
6.8
-20
0
60
40
MAX997toc0202
PROPAGATION DELAY
vs. TEMPERATURE
t
PD
+
t
PD
-
0
120
CAPACITIVE LOAD (pF)
60
20
40
100
80
MAX997toc03
PROPAGATION DELAY
vs. CAPACITIVE LOAD
PROPAGATION DELAY (ns)
8
7
6
5
4
t
PD+
t
PD-
2.5
3.5
4.5
5.5
SUPPLY VOLTAGE (V)
5.0
3.0
4.0
6.0
MAX997toc04
PROPAGATION DELAY
vs. SUPPLY VOLTAGE
5.0
PROPAGATION DELAY (ns)
5.5
6.0
t
PD
+
t
PD
-
2
6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5
6.0
6.5
7.0
7.5
8.0
3
4
MAX997toc07A
MAX961/MAX963
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
T
A
= +85C
T
A
= -40C
T
A
= +25C
1
10
100
1000
10,000
SOURCE CURRENT (A)
MAX997toc05
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
V
OH
(V)
2.50
2.55
2.60
2.65
2.70
2.80
2.75
T
A
= -40C
T
A
= +25C
T
A
= +85C
1
10
100
1000
10,000
SINK CURRENT (A)
MAX997toc06
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
V
OL
(V)
0
0.1
0.2
0.3
0.4
0.5
T
A
= -40C
T
A
= +85C
T
A
= +25C
3
4
5
6
7
2
6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5
3
4
MAX997toc07B
MAX962/MAX964
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
T
A
= -40C
T
A
= +85C
T
A
= +25C
3
4
5
6
7
8
9
2
6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
5
3
4
MAX9997toc7C
MAX997/MAX999
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
T
A
= -40C
T
A
= +85C
T
A
= +25C
MAX961MAX964/MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
_______________________________________________________________________________________
5
60
-40
80
310
260
TEMPERATURE (C)
SHUTDOWN SUPPLY CURRENT (
A)
20
160
110
-20
0
60
210
40
MAX997toc08
MAX961/MAX963/MAX964/MAX997
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
V
CC
= 5.0V
V
CC
= 2.7V
2
6
SUPPLY VOLTAGE (V)
5
3
4
MAX997toc10
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. SUPPLY VOLTAGE
-3
-4
TRIP POINT / V
OS
(mV)
4
3
2
1
0
-1
-2
V
TRIP+
V
OS
V
TRIP-
-1
0
1
2
3
4
5
6
V
CM
(V)
MAX997toc11
INPUT BIAS CURRENT (I
B+
, I
B-
)
vs. COMMON-MODE VOLTAGE
I
B+
, I
B-
(
A)
-6
-4
-2
0
2
4
6
8
-8
V
CC
= 5.0V
V
IN
= V
OS
NEGATIVE
VALUES
REPRESENT
CURRENT
FLOWING INTO
THE DEVICE
T
A
= -40C
T
A
= +85C
T
A
= +25C
-0.5
-40
80
TEMPERATURE (C)
INPUT BIAS/OFFSET CURRENT (
A)
20
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-20
0
60
40
MAX997toc12
INPUT BIAS CURRENT/INPUT OFFSET
CURRENT vs. TEMPERATURE
I
OS
I
B+
I
B-
____________________________Typical Operating Characteristics (continued)
(V
CC
= +3.0V, C
LOAD
= 5pF, 5mV of overdrive, T
A
= +25C, unless otherwise noted.)
0
-40
80
140
120
TEMPERATURE (C)
SHORT-CIRCUIT CURRENT (mA)
20
60
40
20
-20
0
60
80
100
40
MAX997toc13
SHORT-CIRCUIT OUTPUT CURRENT
vs. TEMPERATURE
OUTPUT SHORTED
TO GND (SOURCING)
OUTPUT SHORTED
TO V
CC
(SINKING)
3
-3
-40
85
2
V
TRIP+
V
TRIP-
V
OS
1
TEMPERATURE (C)
TRIP POINT / V
OS
(mV)
20
-1
-2
-20
0
60
0
40
MAX997toc09
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. TEMPERATURE
MAX997toc14
50MHz RESPONSE
V
OS
V
IN
= 100mVp-p
GND
5ns/div
OUTPUT
1V/div
INPUT
50mV/div
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