MAXIM MAX961, MAX964, MAX997, MAX999 User Manual

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 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.

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 fea­ture. Latch enable allows the user to hold a valid com­parator 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.

________________________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
♦ 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)

______________________Selector Guide

MAX961–MAX964/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

MAX961ESA

MAX961EUA
MAX962ESA

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP RANGE

PIN-

PACKAGE

8 SO
8 µMAX
8 SO

_______________Ordering Information

MAX962EUA -40°C to +85°C 8 µMAX

PART

NO. OF

COMPARATORS

COMPLEMENTARY

OUTPUT

SHUTDOWN

LATCH

ENABLE

PACKAGE

MAX961 1 Yes Yes Yes 8 SO/µMAX
MAX962 2 No No No 8 SO/µMAX
MAX963 2 Yes Yes Yes 14 SO
MAX964 4 No Yes No 16 SO/QSOP

MAX963ESD

-40°C to +85°C 14 SO

MAX964ESE

-40°C to +85°C 16 Narrow SO

MAX964EEE -40°C to +85°C 16 QSOP

__________________Pin Configurations

Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.

GND

IN-IN+

15V

CC

Q

MAX999

SOT23-5

2

34

Pin Configurations continued at end of data sheet.

MAX997 1 No Yes No 8 SO/µMAX
MAX999 1 No No No 5 SOT23

MAX997ESA

-40°C to +85°C 8 SO
MAX997EUA -40°C to +85°C 8 µMAX
MAX999EUK-T

-40°C to +85°C 5 SOT23-5

TOP VIEW

SOT

TOP MARK

—
—
—
—
—
—
—
—
—

ACAB

ELECTRICAL CHARACTERISTICS

(VCC= +2.7V to +5.5V, VCM= 0V, C

OUT

= 5pF, V

SHDN

= 0V, VLE= 0V, unless otherwise noted.) (Note 1)

MAX961–MAX964/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, VCCto 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

= +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, 10sec) .............................+300°C

V

OUT

= 1.4V, VCC= 2.7V

I

SINK

= 4mA

I

SOURCE

= 4mA

VCM= 0V (Note 6)

(Note 2)

Inferred by PSRR

V

CC

= 5V

V

CC

= 5V

VCM= - 0.1V
or 5.1V,
VCC= 5V
(Note 3)

mA30 60Capacitive Slew Current

V0.52V

OL

Output Low Voltage

VVCC- 0.52V

OH

Output High Voltage

mV/V0.05 0.3PSRRPower-Supply Rejection Ratio

kΩ130R

INCM

Common-Mode Input Impedance

kΩ8R

IND

Differential Input Impedance

pF3Input Capacitance

V-0.1 VCC+ 0.1V

CMR

V2.7 5.5V

CC

Supply Voltage
Input Common-Mode Voltage

Range

mV

±2.0 ±3.5

V

TRIP

Input-Referred Trip Points

±2.0 ±3.5

TA= +25°C

0.52

VCC- 0.52

0.3

-0.1 VCC+ 0.1

2.7 5.5

±4.0

±6.5

T

MIN

to T

MAX

CONDITIONS UNITS

MIN TYP MAX

SYMBOLPARAMETER

MIN MAX

µMAX,
SOT23

All other
packages

µMAX,
SOT23

VCM= - 0.1V
or 5.1V,
VCC= 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

CMRRCommon-Mode Rejection Ratio

1.0

µMAX,
SOT23

V

IN+

=

V

IN-

= 0V

or V

CC,

VCC= 5V

All other
packages

µA

±15

I

B

Input Bias Current

±15

±15

±30

mVInput-Referred Hysteresis 3.5

VCC= 5.5V, V

IN-

= 0V,

IIN+ = 100µA

V2.1Differential Input Clamp Voltage

µMAX,
SOT23

All other
packages

0.1 0.3 0.5

MAX961–MAX964/MAX997/MAX999

Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,

Beyond-the-Rails Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.7V to +5.5V, VCM= 0V, C

OUT

= 5pF, V

SHDN

= 0V, VLE= 0V, unless otherwise noted.) (Note 1)

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 VCM= -0.1V and V

OSH

is the offset at VCM= 5.1V.

Note 6: PSRR = (V

OS

2.7 - VOS5.5) / 2.8V, where VOS2.7 is the offset voltage at VCC= 2.7V, and VOS5.5 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
(>10kΩ)

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

VCC= 5V

Between t

PD-

and t

PD+

ns250t

ON

Shutdown Disable Time

ns150t

OFF

Shutdown Time

ns10t

LPD

Latch Propagation Delay

ns5t

LPW

Latch Pulse Width

ns5t

H

Latch-to-Data Hold Time

ns5t

SU

Data-to-Latch Setup Time

ns0.3t

SKEW

Propagation-Delay Skew

ns0.3t

PD

Differential Propagation
Delay

µA1

Shutdown Output
Leakage Current

pF4Output Capacitance

ns4.5 7t

PD

Propagation Delay

µA±15IIL, I

IH

Logic Input Current

V

(VCC/ 2)

- 0.4

V

IL

Logic Input Low

ns2.3tR, t

F

Rise/Fall Time

V

(V

CC

/ 2)

+ 0.4

V

IH

Logic Input High

TA= +25°C

10

5

5

5

20

8.5

±30

(VCC/ 2)

- 0.4

(VCC/ 2)

+ 0.4

T

MIN

to T

MAX

CONDITIONS UNITS

MIN TYP MAX

SYMBOLPARAMETER

MIN MAX

Between any two channels or
outputs (Q/

Q)

MAX962/MAX964, VCC= 5V 58 9

MAX961/MAX963/MAX964/
MAX997, VCC= 5V

mA0.27 0.5I

SHDN

Shutdown Supply Current
per Comparator

0.5

MAX997/MAX999, VCC= 5V 5 6.5 6.5

MAX961/MAX963, VCC= 5V 7.2 11

Supply Current
per Comparator

I

CC

11

mA

MAX961–MAX964/MAX997/MAX999

Single/Dual/Quad, Ultra-High-Speed, +3V/+5V,
Beyond-the-Rails Comparators

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

(VCC= +3.0V, C

LOAD

= 5pF, 5mV of overdrive, TA= +25°C, unless otherwise noted.)

0102030405060708090100

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

tPD+

t

PD

-

0120

CAPACITIVE LOAD (pF)

6020 40 10080

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)

5.03.0 4.0 6.0

MAX997toc04

PROPAGATION DELAY
vs. SUPPLY VOLTAGE

5.0

PROPAGATION DELAY (ns)

5.5

6.0

tPD+

tPD-

26

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

5

6.0

6.5

7.0

7.5

8.0

34

MAX997toc07A

MAX961/MAX963

SUPPLY CURRENT PER COMPARATOR

vs. SUPPLY VOLTAGE

TA = +85°C

TA = -40°C

TA = +25°C

1101001000 10,000

SOURCE CURRENT (µA)

MAX997toc05

OUTPUT HIGH VOLTAGE

vs. SOURCE CURRENT

V

OH

(V)

2.50

2.55

2.60

2.65

2.70

2.80

2.75

TA = -40°C

TA = +25°C

TA = +85°C

110100 1000 10,000

SINK CURRENT (µA)

MAX997toc06

OUTPUT LOW VOLTAGE

vs. SINK CURRENT

V

OL

(V)

0

0.1

0.2

0.3

0.4

0.5

TA = -40°C

TA = +85°C

TA = +25°C

3

4

5

6

7

26

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

534

MAX997toc07B

MAX962/MAX964

SUPPLY CURRENT PER COMPARATOR

vs. SUPPLY VOLTAGE

TA = -40°C

TA = +85°C

TA = +25°C

3

4

5

6

7

8

9

26

SUPPLY VOLTAGE (V)

SUPPLY CURRENT (mA)

534

MAX9997toc7C

MAX997/MAX999

SUPPLY CURRENT PER COMPARATOR

vs. SUPPLY VOLTAGE

TA = -40°C

TA = +85°C

TA = +25°C