MAX961ESA-T [MAXIM]
Comparator, 1 Func, 2000uV Offset-Max, 4.5ns Response Time, CMOS, PDSO8, 0.150 INCH, MS-012AA, SOIC-8;
| 型号： | MAX961ESA-T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Comparator, 1 Func, 2000uV Offset-Max, 4.5ns Response Time, CMOS, PDSO8, 0.150 INCH, MS-012AA, SOIC-8 放大器 光电二极管 |
| 文件： | 总13页 (文件大小：1605K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
General Description
Features
● Ultra-Fast, 4.5ns Propagation Delay
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 VCC. Propagation delay is 4.5ns (5mV
overdrive), while supply current is 5mA per comparator.
● 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)
The MAX961/MAX963/MAX964 and MAX997 have a
shutdown mode in which they consume only 270μA sup-
ply current per comparator. The MAX961/MAX963 pro-
vide complementary outputs and a latch-enable feature.
Latch enable allows the user to hold a valid comparator
output. The MAX999 is available in a tiny 5-pin SOT23
package. The single MAX961/MAX997 and dual MAX962
are available in space-saving 8-pin μMAX® packages.
● TTL/CMOS-Compatible Outputs
● Shutdown Mode
(MAX961/MAX963/MAX964/MAX997)
● Available in Space-Saving Packages:
• 5-Pin SOT23 (MAX999)
• 8-Pin μMAX (MAX961/MAX962/MAX997)
• 16-Pin QSOP (MAX964)
Ordering Information
Applications
● Single 3V/5V Systems
PART
PIN-PACKAGE
TOP MARK
● Portable/Battery-Powered Systems
● Threshold Detectors/Discriminators
● GPS Receivers
● Line Receivers
● Zero-Crossing Detectors
● High-Speed Sampling Circuits
MAX961ESA
MAX961EUA-T
MAX962ESA
MAX962EUA-T
MAX963ESD
MAX964ESE
MAX964EEE
MAX997ESA
MAX997EUA-T
MAX999AAUK+T
MAX999EUK-T
8 SO
8 µMAX
8 SO
8 µMAX
14 SO
16 Narrow SO
16 QSOP
8 SO
—
—
—
—
—
—
—
—
—
Selector Guide
8 µMAX
5 SOT23
5 SOT23
+AFEI
ACAB
Note: All E grade devices are specified over the -40°C to
+85°C operating temperature range. MAX999AAUK is specified
over the -40°C to +125°C operating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Pin Configurations
MAX961
MAX962
MAX963
MAX964
MAX997
MAX999
1
2
2
4
1
1
Yes
No
Yes
No
No
No
Yes
No
Yes
No
Yes
No
No
No
8 SO/μMAX
8 SO/μMAX
14 SO
TOP VIEW
Q
GND
IN+
1
2
3
5
4
V
CC
Yes
Yes
Yes
No
MAX999
16 SO/QSOP
8 SO/μMAX
5 SOT23
IN-
SOT23
Beyond-the-Rails is a trademark and μMAX is a registered
trademark of Maxim Integrated Products, Inc.
Pin Configurations continued at end of data sheet.
19-1129; Rev 7; 9/14
MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Absolute Maximum Ratings
Supply Voltage, V
to GND..................................-0.3V to +6V
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
CC
All Other Pins ........................................... -0.3V to (V
Current into Input Pins .....................................................±20mA
Duration of Output Short Circuit to GND or V ......Continuous
+ 0.3V)
CC
CC
Continuous Power Dissipation (T = +70°C)
MAX96_E/MAX99_E ...................................... -40°C to +85°C
MAX999AAUK.............................................. -40°C to +125°C
Storage Temperature Range............................ -65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300°C
A
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
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
= +2.7V to +5.5V, V
= 0V, C
= 5pF, V
= 0V, V = 0V, unless otherwise noted. T
to T
is -40°C to +85°C for
MAX
CC
CM
OUT
SHDN
LE
MIN
all E grade devices. For MAX999AAUK only, T
to T
is -40°C to +125°C.) (Note 1)
MIN
MAX
T
= +25ºC
TYP
T
to T
A
MIN MAX
PARAMETER
Supply Voltage
SYMBOL
CONDITIONS
Inferred by PSRR
(Note 2)
UNITS
MIN
MAX
MIN
TYP
MAX
V
2.7
5.5
2.7
5.5
V
V
CC
Input Common-Mode
Voltage Range
V
+
V
+
CC
0.1
CC
0.1
V
-0.1
-0.1
CMR
TRIP
µMAX, SOT23
MAX999AAUK
±2.0
±2.0
±3.5
±3.5
±6.5
±8.0
V
= -0.1V
CM
or 5.1V,
Input-Referred Trip Points
Input-Referred Hysteresis
Input Offset Voltage
V
mV
mV
mV
V
= 5V
CC
All other E
packages
(Note 3)
±2.0
±3.5
±4.0
3.5
µMAX, SOT23
MAX999AAUK
±0.5
±1.5
±1.5
±4.5
±6.0
V
= -0.1V
CM
or 5.1V,
±0.5
±0.5
V
OS
V
= 5V
CC
All other E
packages
(Note 4)
±1.5
±15
±2.0
±30
µMAX, SOT23
V
= V
IN-
IN+
Input Bias Current
I
= 0V or V
,
µA
B
CC
All other E
packages
±15
±15
V
= 5V
CC
Differential Input Clamp
Voltage
V
I
= 5.5V, V = 0V,
IN-
= 100µA
CC
IN+
2.1
3
V
Input Capacitance
pF
kΩ
Differential Input
Impedance
R
V
V
= 5V
= 5V
8
IND
CC
CC
Common-Mode Input
Impedance
R
130
kΩ
INCM
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Electrical Characteristics (continued)
(V
= +2.7V to +5.5V, V
= 0V, C
= 5pF, V
= 0V, V = 0V, unless otherwise noted. T
to T
is -40°C to +85°C for
MAX
CC
CM
OUT
SHDN
LE
MIN
all E grade devices. For MAX999AAUK only, T
to T
is -40°C to +125°C.) (Note 1)
MIN
MAX
T
= +25ºC
TYP
T
to T
A
MIN MAX
PARAMETER
SYMBOL
CONDITIONS
UNITS
MIN
MAX
MIN
TYP
MAX
V
V
= 5V,
= -0.1V
CC
µMAX, SOT23
0.1
0.1
0.3
1.0
0.5
Common-Mode Rejection
Ratio
CM
CMRR
PSRR
mV/V
mV/V
to 5.1V
(Note 5)
All other E
packages
0.3
0.3
Power-Supply Rejection
Ratio
V
= 0V (Note 6)
0.05
0.3
CM
V
0.52
-
V
0.52
-
CC
CC
E grade
I
=
SOURCE
Output High Voltage
V
V
OH
4mA
V
0.52
-
V
0.55
-
CC
CC
MAX999AAUK
E grade
0.52
0.52
0.52
0.55
I
=
SINK
Output Low Voltage
V
V
OL
4mA
MAX999AAUK
Capacitive Slew Current
Output Capacitance
V
= 1.4V, V
= 2.7V
30
60
4
mA
pF
OUT
CC
MAX961/MAX963, V
MAX962/MAX964, V
= 5V
= 5V
7.2
5
11
8
11
9
CC
CC
Supply Current per
Comparator
I
mA
CC
MAX997/MAX999E, V = 5V
5
6.5
6.5
6.5
7.0
CC
MAX999AAUK, V
= 5V
5
CC
Shutdown Supply Current
per Comparator
MAX961/MAX963/MAX964/
MAX997, V = 5V
I
0.27
2.3
0.5
0.5
mA
µA
SHDN
CC
MAX961/MAX963/MAX964/
MAX997, V = 5V and
Shutdown Output
Leakage Current
1
20
OUT
V
- 5V
CC
Rise/Fall Time
t , t
V
= 5V
ns
V
R
F
CC
V
+ 0.4
/2
V
+ 0.4
/2
CC
CC
Logic-Input High
V
IH
V
- 0.4
/2
V
- 0.4
/2
CC
CC
Logic-Input Low
V
V
IL
Logic-Input Current
I , I
V
= 0V or V
CC
±15
7.0
±30
8.5
µA
IL IH
LOGIC
5mV
overdrive
(Note 7)
E grade
4.5
4.5
Propagation Delay
t
t
ns
PD
PD
MAX999AAUK
7.0
10
Differential Propagation
Delay
Between any two channels
or outputs (Q/Q)
0.3
0.3
ns
ns
Propagation-Delay Skew
t
Between t
and t
PD- PD+
SKEW
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Electrical Characteristics (continued)
(V
= +2.7V to +5.5V, V
= 0V, C
= 5pF, V
= 0V, V = 0V, unless otherwise noted. T
to T
is -40°C to +85°C for
MAX
CC
CM
OUT
SHDN
LE
MIN
all E grade devices. For MAX999AAUK only, T
to T
is -40°C to +125°C.) (Note 1)
MIN
MAX
T
= +25ºC
TYP
T
to T
A
MIN MAX
PARAMETER
SYMBOL
CONDITIONS
UNITS
MIN
MAX
5
MIN
TYP
MAX
Data-to-Latch Setup Time
Latch-to-Data Hold Time
Latch Pulse Width
t
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
MAX961/MAX963 (Note 8)
5
5
ns
ns
ns
ns
SU
t
5
H
t
5
5
LPW
Latch Propagation Delay
t
10
10
LPD
Delay until output is high-Z
(> 10kΩ)
Shutdown Time
t
150
250
ns
ns
OFF
Shutdown Disable Time
t
Delay until output is valid
ON
Note 1: The MAX961EUA/MAX962EUA/MAX997EUA/MAX999EUK are 100% production tested at T = +25°C; all temperature
A
specifications 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
- V
) / 5.2V, where V
is the offset at V
= -0.1V and V
is the offset at V
= 5.1V.
OSL
OSH
OSL
CM
OSH
CM
Note 6: PSRR = (V 2.7 - V 5.5) / 2.8V, where V 2.7 is the offset voltage at V
= 2.7V, and V 5.5 is the offset voltage at
OS
OS
OS
CC
OS
V
= 5.5V.
CC
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
is added to the overdrive.
TRIP
Note 8: Guaranteed by design.
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Typical Operating Characteristics
(V
= +3.0V, C
= 5pF, 5mV of overdrive, T = +25°C, unless otherwise noted.)
CC
LOAD A
PROPAGATION DELAY
vs. INPUT OVERDRIVE
PROPAGATION DELAY
vs. TEMPERATURE
PROPAGATION DELAY
vs. CAPACITIVE LOAD
7.5
6.8
8
7
6
6.6
6.4
6.2
6.0
5.8
7.0
6.5
6.0
5.5
5.0
4.5
t
PD-
t
+
PD
t
-
PD
t
PD+
5.6
5.4
5.2
5
4
t
PD-
4.0
3.5
t
PD+
5.0
0
10 20 30 40 50 60 70 80 90 100
INPUT OVERDRIVE (mV)
-40
-20
0
20
40
60
85
0
20
40
60
80
100
120
TEMPERATURE (°C)
CAPACITIVE LOAD (pF)
PROPAGATION DELAY
vs. SUPPLY VOLTAGE
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
0.5
0.4
0.3
0.2
6.0
5.5
2.80
2.75
2.70
2.65
2.60
T = +85°C
A
T = +25°C
A
T = -40°C
A
T = -40°C
T = +25°C
T = +85°C
A
A
A
t
-
PD
0.1
0
2.55
2.50
t
+
PD
5.0
2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
1
10
100
1000
10,000
1
10
100
1000
10,000
SOURCE CURRENT (µA)
SINK CURRENT (µA)
MAX961/MAX963
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
MAX962/MAX964
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
MAX997/MAX999
SUPPLY CURRENT PER COMPARATOR
vs. SUPPLY VOLTAGE
8.0
7
6
5
4
3
9
8
7
6
5
4
3
7.5
7.0
T = +85°C
A
T = +85°C
A
T = +25°C
A
T = +85°C
A
T = +25°C
A
T = +25°C
A
T = -40°C
A
6.5
6.0
T = -40°C
A
T = -40°C
A
2
3
4
5
6
2
3
4
5
6
2
3
4
5
6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Typical Operating Characteristics (continued)
(V
= +3.0V, C
= 5pF, 5mV of overdrive, T = +25°C, unless otherwise noted.)
CC
LOAD A
MAX961/MAX963/MAX964/MAX997
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. TEMPERATURE
VOLTAGE TRIP POINT/INPUT OFFSET
VOLTAGE vs. SUPPLY VOLTAGE
3
2
4
3
310
V
TRIP+
V
CC
= 5.0V
260
210
2
V
TRIP+
1
1
V
OS
0
0
160
110
60
V
OS
-1
-2
-3
-4
-1
V
CC
= 2.7V
-2
-3
V
TRIP-
V
TRIP-
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
85
2
3
4
5
6
TEMPERATURE (°C)
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
INPUT BIAS CURRENT/INPUT OFFSET
CURRENT vs. TEMPERATURE
INPUT BIAS CURRENT (I , I )
B+ B-
vs. COMMON-MODE VOLTAGE
SHORT-CIRCUIT OUTPUT CURRENT
vs. TEMPERATURE
8
6
4.0
3.5
3.0
2.5
2.0
1.5
140
I
B-
V
V
= 5.0V
OUTPUT SHORTED
CC
T = +85ºC
A
= V
TO V (SINKING)
IN
OS
CC
120
100
80
I
B+
NEGATIVE
VALUES
REPRESENT
CURRENT
FLOWING INTO
THE DEVICE
4
T = +25ºC
A
2
OUTPUT SHORTED
TO GND (SOURCING)
0
60
40
20
0
T = -40ºC
A
-2
-4
-6
-8
1.0
0.5
0
I
OS
-0.5
-40
-20
0
20
40
60
80
-40
-20
0
20
40
60
80
-1
0
1
2
3
4
5
6
TEMPERATURE (ºC)
TEMPERATURE (°C)
V
(V)
CM
50MHz RESPONSE
V
IN
= 100mV
P-P
V
OS
INPUT
50mV/div
OUTPUT
1V/div
GND
5ns/div
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Typical Operating Characteristics (continued)
(V
= +3.0V, C
= 5pF, 5mV of overdrive, T = +25°C, unless otherwise noted.)
CC
LOAD A
PROPAGATION DELAY (t
)
PROPAGATION DELAY (t
)
PD+
PD-
MAX997toc15
MAX997toc16
GND
INPUT
50mV/div
INPUT
50mV/div
GND
GND
OUTPUT
1V/div
OUTPUT
1V/div
GND
5ns/div
5ns/div
Pin Description
PIN
MAX997 MAX999 MAX961 MAX962 MAX963 MAX964
NAME
FUNCTION
1, 5
2
—
4
—
2
—
2
—
1
—
1
N.C.
No Connection. Not internally connected.
Comparator A Inverting Input
IN-, INA-
3
3
1
1
2
2
IN+, INA+ Comparator A Noninverting Input
Latch-Enable Input. The output latches when
LE_ is high. The latch is transparent when LE_
is low.
LE, LEA,
LEB
—
—
4
—
3, 5
—
4
2
5
5
4, 11
—
12
16
GND
N.C.
Ground
No Connection. Connect to GND to prevent
parasitic feedback.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
4
6
3
4
5
6
7
8
INB-
INB+
INC-
INC+
IND-
IND+
Comparator B Inverting Input
Comparator B Noninverting Input
Comparator C Inverting Input
Comparator C Noninverting Input
Comparator D Inverting Input
Comparator D Noninverting Input
3
7
—
—
—
—
—
—
—
—
Shutdown Input. The device shuts down when
SHDN is high.
8
—
3
—
8
9
SHDN
—
—
—
—
—
—
—
—
—
—
—
—
6
9
14
11
10
—
QB
QC
QD
QB
Comparator B Output
—
—
—
—
—
10
Comparator C Output
Comparator D Output
Comparator B Complementary Output
Positive Supply Input (V
≤5.5V)
to GND must be
CC
7
5
8
8
12
13
V
CC
6
1
6
7
7
13
14
15
—
Q, QA
Comparator A TTL Output
Comparator A Complementary Output
—
—
—
Q, QA
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
teresis effectively causes one comparator input voltage to
move quickly past the other, thus taking the input out of
the region where oscillation occurs. Standard compara-
tors require hysteresis to be added with external resistors.
The fixed internal hysteresis eliminates these resistors.
Detailed Description
The MAX961–MAX964/MAX997/MAX999 single-supply
comparators feature internal hysteresis, ultra-high-speed
operation, and low power consumption. Their outputs are
guaranteed to pull within 0.52V of either rail without exter-
nal pullup or pulldown circuitry. Beyond-the-Rails input
voltage range and low-voltage, single-supply operation
make these devices ideal for portable equipment. These
comparators all interface directly to CMOS logic.
The MAX961/MAX963 include internal latches that allow
storage of comparison results. LE has a high input
impedance. If LE is low, the latch is transparent (i.e., the
comparator operates as though the latch is not present).
The comparator’s output state is stored when LE is pulled
high. All timing constraints must be met when using the
latch function (Figure 2).
Timing
Most high-speed comparators oscillate in the linear region
because of noise or undesirable parasitic feedback. This
can occur when the voltage on one input is close to or
equal to the voltage on the other input. These devices
have a small amount of internal hysteresis to counter
parasitic effects and noise.
Input Stage Circuitry
The MAX961–MAX964/MAX997/MAX999 include internal
protection circuitry that prevents damage to the preci-
sion input stage from large differential input voltages.
This protection circuitry consists of two groups of three
front-to-back diodes between IN+ and IN-, as well as two
200Ω resistors (Figure 3). The diodes limit the differential
voltage applied to the comparator’s internal circuitry to no
The added hysteresis of the MAX961–MAX964/MAX997/
MAX999 creates two trip points: one for the rising input
voltage and one for the falling input voltage (Figure 1).
The difference between the trip points is the hysteresis.
When the comparator’s input voltages are equal, the hys-
more than 3V , where V is the diode’s forward-voltage
F
F
drop (about 0.7V at +25°C).
V
TRIP+
V
IN+
V
HYST
V
TRIP+
+ V
2
TRIP-
V
=
OS
V
IN-
= 0V
V
TRIP-
V
OH
V
V
Q
OL
Q
OH
V
OL
Figure 1. Input and Output Waveforms, Noninverting Input Varied
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
t
SU
t
H
DIFFERENTIAL
INPUT
V
V
OS
VOLTAGE
t
LPW
CC
V
2
CC
LE
0V
t
t
LPD
PD
V
OH
V
CC
2
Q
V
OL
V
CC
2
Q
t
t
SKEW
SKEW
Figure 2. MAX961/MAX963 Timing Diagram
For a large differential input voltage (exceeding 3V ), this
F
protection circuitry increases the input bias current at IN+
(source) and IN- (sink).
MAX961–MAX964
MAX997
(IN+ − IN−) − 3V
2× 200
F
Input current =
MAX999
Input currents with large differential input voltages should
not be confused with input bias currents (I ). As long as
200Ω
B
TO INTERNAL
CIRCUITRY
IN+
IN-
the differential input voltage is less than 3V , this input
F
current is less than 2I .
B
The input circuitry allows the MAX961–MAX964/MAX997/
MAX999’s input common-mode range to extend 100mV
beyond both power-supply rails. The output remains in
the correct logic state if one or both inputs are within the
common-mode range. Taking either input outside the
common-mode range causes the input to saturate and the
propagation delay to increase.
TO INTERNAL
CIRCUITRY
200Ω
Figure 3. Input Stage Circuitry
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
V
CC
I
SOURCE
MAX961–MAX964
MAX997
MAX999
Q, Q
I
SINK
GND
Figure 4. Output Stage Circuitry
Figure 5. MAX961 PCB Layout
Output Stage Circuitry
The MAX961–MAX964/MAX997/MAX999 contain a cur-
rent-driven output stage, as shown in Figure 4. During an
Applications Information
Circuit Layout and Bypassing
The MAX961–MAX964/MAX997/MAX999’s high band-
width requires a high-speed layout. Follow these layout
guidelines:
output transition, I
or I
is pushed or pulled to
SOURCE
SINK
the output pin. The output source or sink current is high
during the transition, creating a rapid slew rate. Once the
1) Use a PCB with a good, unbroken, low-inductance
ground plane.
output voltage reaches V
or V , the source or sink
OH
OL
current decreases to a small value, capable of maintain-
ing the V or V in static condition. This decrease in
OH
OL
2) Place a decoupling capacitor (a 0.1μF ceramic sur-
current conserves power after an output transition has
occurred.
face-mount capacitor is a good choice) as close to
V
as possible.
CC
One consequence of a current-driven output stage is a
linear dependence between the slew rate and the load
capacitance. A heavy capacitive load slows down the volt-
age output transition.
3) On the inputs and outputs, keep lead lengths short to
avoid unwanted parasitic feedback around the com-
parators. Keep inputs away from outputs. Keep imped-
ance between the inputs low.
4) Solder the device directly to the printed circuit board
rather than using a socket.
Shutdown Mode
When SHDN is high, the MAX961/MAX963/MAX964/
MAX997 shut down. When shut down, the supply current
drops to 270μA per comparator, and the outputs become
high impedance. SHDN has a high input impedance.
Connect SHDN to GND for normal operation. Exit shut-
down with LE low; otherwise, the output is indeterminate.
5) Refer to Figure 5 for a recommended circuit layout.
6) For slow-moving input signals, take care to prevent
parasitic feedback. A small capacitor (1000pF or less)
placed between the inputs can help eliminate oscil-
lations in the transition region. This capacitor causes
negligible degradation to t
ance is low.
when the source imped-
PD
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Pin Configurations
TOP VIEW
1
2
3
4
8
7
6
5
V
1
2
3
4
8
7
6
5
INA+
INA-
INB+
INB-
V
IN+
IN-
CC
CC
QA
Q
MAX962
SO/MAX
MAX961
SO/MAX
QB
Q
SHDN
LE
GND
GND
INA-
INA+
LEA
1
2
3
4
5
6
7
14 QA
13 QA
12
INA-
INA+
INB-
INB+
INC-
INC+
IND-
IND+
1
2
3
4
5
6
7
8
16 N.C.
SHDN
1
8
7
6
5
N.C.
IN-
15 QA
14 QB
V
CC
2
3
4
MAX997
V
CC
Q
IN+
GND
LEB
11 GND
MAX963
MAX964
13 V
CC
GND
N.C.
10 QB
12 GND
11 QC
10 QD
INB-
INB+
9
8
QB
SO/MAX
SHDN
9
SHDN
SO
SO/QSOP
Chip Information
MAX961/MAX962 TRANSISTOR COUNT: 286
MAX963/MAX964 TRANSISTOR COUNT: 607
MAX997/MAX999 TRANSISTOR COUNT: 142
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
LAND PATTERN NO.
5 SOT23
8 SO
U5+1
S8-2
21-0057
21-0041
21-0036
21-0041
21-0041
21-0055
90-0174
90-0096
90-0092
90-0112
90-0097
90-0167
8 µMAX
14 SO
U8-1
S14-1
S16-1
E16-1
16 SO
16 QSOP
Maxim Integrated
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MAX961–MAX964/
MAX997/MAX999
Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators
Revision History
REVISION REVISION
PAGES
DESCRIPTION
CHANGED
NUMBER
DATE
0
1
2
3
4
5
6
7
9/96
Initial release
—
12/96
3/97
Added 8-pin µMAX packages. Correct minor errors.
Added dual and quad MAX963/MAX964 packages.
Added new MAX997 and MAX999 parts.
1, 2, 3
1, 2, 3
1, 2, 3
2, 3, 4, 5, 6
2
7/97
3/99
New wafer fab/process change to CB20. Update specifications and TOCs.
Added new Current into Input Pins in the Absolute Maximum Ratings.
Added new MAX999AAUK part and specifications.
2/07
12/08
9/14
1, 2, 3
13
Removed automotive reference from Revision History.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
©
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
2014 Maxim Integrated Products, Inc.
│ 13
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