MAXIM MAX9140, MAX9141, MAX9142, MAX9144 User Manual

General Description

The MAX9140/MAX9141 are single and the MAX9142/
MAX9144 are dual/quad high-speed comparators opti­mized for systems powered from a 3V or 5V supply. The
MAX9141 features latch enable and device shutdown.
These devices combine high speed, low power, and
rail-to-rail inputs. Propagation delay is 40ns, while sup­ply current is only 150µA per comparator.

The input common-mode range of the MAX9140/
MAX9141/MAX9142/MAX9144 extends beyond both
power-supply rails. The outputs pull to within 0.3V of
either supply rail without external pullup circuitry, mak­ing these devices ideal for interface with both CMOS
and TTL logic. All input and output pins can tolerate a
continuous short-circuit fault condition to either rail.
Internal hysteresis ensures clean output switching, even
with slow-moving input signals.

The MAX9140/MAX9141/MAX9142/MAX9144 are high­er-speed, lower-power, and lower-cost upgrades to
industry-standard comparators MAX941/MAX942/
MAX944.

The MAX9140 are offered in tiny 5-pin SC70 and SOT23
packages. The MAX9141 and MAX9142 are available in
8-pin SOT23 and SO packages, while the MAX9144 is
available in both 14-pin SO and TSSOP packages.

Applications

Line Receivers

Battery-Powered Systems

Threshold Detectors/Discriminators

3V/5V Systems

Zero-Crossing Detectors

Sampling Circuits

Features

♦ Fast, 40ns Propagation Delay (10mV Overdrive)
♦ Low Power

150µA Supply Current Per Comparator (3V)

♦ Optimized for 3V and 5V Applications
♦ Rail-to-Rail Input Voltage Range
♦ Low, 500µV Offset Voltage
♦ Internal Hysteresis for Clean Switching
♦ Outputs Swing 300mV of Power Rails
♦ CMOS/TTL-Compatible Outputs
♦ Output Latch (MAX9141 Only)
♦ Shutdown Function (MAX9141 Only)
♦ Available in SC70 and SOT23 Packages

Ordering Information

MAX9140/MAX9141/MAX9142/MAX9144

40ns, Low-Power, 3V/5V, Rail-to-Rail

Single-Supply Comparators

________________________________________________________________

Maxim Integrated Products

1

Pin Configurations

19-2064; Rev 3; 1/10

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.

Note: All E-grade devices are specified over the -40°C to +85°C

operating temperature range. All A-grade devices are specified
over the -40°C to +125°C operating temperature range.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

-

Denotes a package containing lead(Pb).
T = Tape and reel.
/V denotes an automotive qualified part.

TOP VIEW

MAX9140

15V

OUT

2

GND

34

SC70/SOT23

CC

V

CC

+

IN

IN-

GND

IN-IN+

1

2

3

4

SOT23/SO

MAX9141

8

7

6

5

PART* PIN-PACKAGE TOP MARK

MAX9140AAUK+T 5 SOT23 +AFEJ

MAX9140AAXK+T 5 SC70 +ASW

MAX9140AAXK/V+T 5 SC70 +AUG

MAX9140EXK-T 5 SC70 ACC

MAX9140EUK-T 5 SOT23 ADQP

MAX9141EKA-T 8 SOT23 AAFD

MAX9141ESA 8 SO —

MAX9142EKA-T 8 SOT23 AAFE

MAX9142ESA 8 SO —

MAX9144EUD 14 TSSOP —

MAX9144ESD 14 SO —

OUTA

1

INA-

N.C.

OUT

SHDN

LE

OUTA

INA-

INA

GND

1

2

3

+

4

MAX9142

A

SOT23/SO

8

V

CC

7

OUTB

6

INB-

B

5

+

INB

INA

V

INB

INB-

OUTB

2

AD

+

3

4

CC

+

MAX9144

5

BC

6

7

TSSOP/SO

OUTD

14

IND-

13

+

IND

12

GND

11

+

INC

10

INC-

9

OUTC

8

MAX9140/MAX9141/MAX9142/MAX9144

40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 5V, VCM= 0V, SHDN = LE = VCC(MAX9141 only), CL = 15pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at TA= +25°C.) (Note 1)

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.

Power-Supply Ranges

Supply Voltage (V

CC

to GND)...........................................+6V

Differential Input Voltage.......................-0.3V to (V

CC

+ 0.3V)

Common-Mode Input Voltage to GND ..-0.3V to (V

CC

+ 0.3V)

LE Input Voltage (MAX9141 only) .........-0.3V to (V

CC

+ 0.3V)

SHDN Input Voltage (MAX9141 only)....-0.3V to (V

CC

+ 0.3V)

Current into Input Pins ......................................................±20mA

Input/Output Short-Circuit Duration to

V

CC

or GND .....................................................Continuous

Continuous Power Dissipation (T

A

= +70°C)

5-Pin SC70 (derate 3.1mW/°C above +70°C).............247mW

5-Pin SOT23 (derate 7.1mW/°C above +70°C)...........571mW

8-Pin SOT23 (derate 9.1mW/°C above +70°C)...........727mW

8-Pin SO (derate 5.9mW/°C above +70°C)..............470.6mW

14-Pin TSSOP (derate 9.1mW/°C above +70°C) ........727mW

14-Pin SO (derate 8.33mW/°C above +70°C)..........666.7mW

Operating Temperature Range

E grade ...........................................................-40°C to +85°C

A grade.........................................................-40°C to +125°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

Operating Supply Voltage V

Input Voltage Range V

Input Hysteresis V

Input Bias Current I

Input Offset Current I

Common-Mode Rejection Ratio CMRR

Power-Supply Rejection Ratio PSRR

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

(Note 2) 2.7 5.5 V

CC

CMR

HYST

(Note 3) -0.2

(Note 4)

OS

(Note 5) 1.5 mV

(Note 6)

B

TA = -40°C to +85°C 8 120

OS

MAX9140AA_ _ 140

V

= 5.5V

CC

(Note 7)

2.7V ≤ V

5.5V

CC

≤

Output High Voltage V

Output Low Voltage V

Output Leakage Current I

LEAK

I

OH

I

OL

SHDN = GND, MAX9141 only (Note 8) 0.04 1 µA

SOURCE

= 4mA

SINK

= 4mA

TA = +25°C 0.5 2.0

TA = -40°C to +85°C 4.5Input Offset Voltage V

MAX9140AA_ _ 6.0

TA = -40°C to +85°C 90 320

MAX9140AA_ _ 350

TA = -40°C to +85°C 80 800

MAX9140AA_ _ 850

TA = -40°C to +85°C 80 750

MAX9140AA_ _ 800

TA = -40°C to +85°C

MAX9140AA_ _ V

TA = -40°C to +85°C 0.3 0.425

MAX9140AA_ _ 0.45

V

+

CC

0.2

V

-

VCC -

0.3

0.425

CC

CC

- 0.47

V

mV

nA

nA

µV/V

µV/V

V

V

MAX9140/MAX9141/MAX9142/MAX9144

40ns, Low-Power, 3V/5V, Rail-to-Rail

Single-Supply Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V, VCM= 0V, SHDN = LE = VCC(MAX9141 only), CL = 15pF, TA= T

MIN

to T

MAX

, unless otherwise noted. Typical values are

at TA= +25°C.) (Note 1)

Note 1: All devices are 100% production tested at T

A

= +25°C. Specifications over temperature are guaranteed by design.

Note 2: Inferred from PSRR test.
Note 3: Inferred from CMRR test. Note also that either or both inputs can be driven to the absolute maximum limit (0.3V beyond either

supply rail) without damage or false output inversion.

Note 4: V

OS

is defined as the center of the input-referred hysteresis zone. See Figure 1.

Note 5: 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 6: The polarity of I

B

reverses direction as V

CM

approaches either supply rail.

Note 7: Specified over the full common-mode voltage range (V

CMR

).

Note 8: Specification is for current flowing into or out of the output pin for V

OUT

driven to any voltage from VCCto GND while the part is

in shutdown.

Note 9: Specified between any two channels in the MAX9142/MAX9144.
Note 10: Specified as the difference between t

PD+

and t

PD-

for any one comparator.

Note 11: Applies to the MAX9141 only for both SHDN and LE.
Note 12: Applies to the MAX9141 only. Comparator is active with LE driven high and is latched with LE driven low (V

OD

= 10mV). See

Figure 2.

Note 13: Applicable to the MAX9141 only. Comparator is active with the SHDN driven high and is shutdown with SHDN driven low.

Shutdown enable time is the delay when the SHDN is driven high to the time the output is valid. Shutdown disable time is the
delay when the SHDN is driven low to the time the comparator shuts down.

Supply Current (Per Comparator) I

Propagation Delay

Differential Propagation Delay dt

Propagation Delay Skew VOD = 10mV (Note 10) 2 ns

Logic Input-Voltage High V

Logic Input-Voltage Low V

Logic Input Current IIL, I

Data-to-Latch Setup Time t

Latch-to-Data Hold Time t

Latch Pulse Width t

Latch Propagation Delay t

Shutdown Enable Time (Note 13) 1 µs

Shutdown Disable Time (Note 13) 5 µs

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

MAX9141 165 275

MAX9140,
T

= -40°C to +85°C

A

MAX9140AA_ _ 360

MAX9142/MAX9144 150 250

MAX9141 200 320

MAX9140,
T

= -40°C to +85°C

A

MAX9140AA_ _ 400

MAX9142/MAX9144 165 300

CC

t

,

PD+

t

PD-

PD

IH

IL

IHVLOGIC

S

H

LPW

LPD

VCM = VCC = 3V

VCM = VCC = 5V

MAX9141 only, SHDN = GND;
V

= VCM = 3V

CC

VCC = 3V, VOD = 10mV 40 ns

VOD = 10mV (Note 9) 2 ns

(Note 11)

(Note 11) VCC/2

= 0 to VCC (Note 11) 2 10 µA

(Note 12) 16 ns

(Note 12) 16 ns

(Note 12) 45 ns

(Note 12) 60 ns

150 250

165 300

12 30

(V

/2)

CC

+0.4

/2 V

V

CC

(V

CC

-0.4

/2)

µA

V

MAX9140/MAX9141/MAX9142/MAX9144

40ns, Low-Power, 3V/5V, Rail-to-Rail
Single-Supply Comparators

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3.0V, V

CM

= 0V, CL= 15pF, VOD= 10mV, TA = +25°C, unless otherwise noted.)

5.00

5.05

5.10

5.15

5.20

-40 0-20 20406080100

OUTPUT HIGH VOLTAGE

vs. TEMPERATURE

MAX9140 TOC03

TEMPERATURE (°C)

V

OH

(V)

I

SOURCE

= 4mA

VCC = 5.5V

MAX9140 SUPPLY CURRENT

vs. SUPPLY VOLTAGE

300

250

200

(µA)

150

CC

I

100

50

0

TA = +85°C

TA = +25°C

TA = -40°C

3456

VCC (V)

MAX9140 toc01

OUTPUT LOW VOLTAGE

vs. TEMPERATURE

330

I

= 4mA

SINK

328

326

(mV)

OL

V

324

322

320

-40 0-20 20406080100
TEMPERATURE (°C)

OUTPUT SHORT-CIRCUIT (SINK) CURRENT

vs. TEMPERATURE

50

45

40

MAX9140 TOC02

MAX9140 TOC04

OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)

35

-40 0-20 20406080100

TEMPERATURE (°C)

OUTPUT SHORT-CIRCUIT (SOURCE)

OUTPUT SHORT-CIRCUIT SOURCE CURRENT (mA)

CURRENT vs. TEMPERATURE

45

35

25

15

-40 0-20 20406080100
TEMPERATURE (°C)

MAX9140 TOC05

140

120

100

80

60

INPUT CURRENT (nA)

40

20

0

-50 0 25-25 50 75 100

INPUT BIAS CURRENT

vs. TEMPERATURE

TEMPERATURE (°C)

MAX9140 toc06

MAX9140/MAX9141/MAX9142/MAX9144

40ns, Low-Power, 3V/5V, Rail-to-Rail

Single-Supply Comparators

_________________________________________________________________________________________________

5

Typical Operating Characteristics (continued)

(VCC= 3.0V, V

CM

= 0V, CL= 15pF, VOD= 10mV, TA = +25°C, unless otherwise noted.)

-1.0

-0.4

-0.6

-0.8

-0.2

0

0.2

0.4

0.6

0.8

1.0

-50 0-25 25 50 75 100

TRIP POINT

vs. TEMPERATURE

MAX9140 toc08

TEMPERATURE (°C)

V

OS

(mV)

V

TRIP+

V

TRIP-

-500

-200

-300

-400

-100

0

100

200

300

400

500

-50 0-25 255075100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

MAX9140 toc07

TEMPERATURE (°C)

V

OS

(µV)

INPUT VOLTAGE RANGE

7

6

5

4

3

2

INPUT VOLTAGE RANGE (V)

1

0

-1

-40 0-20 20406080100

vs. TEMPERATURE

V

+

CMR

V

-

CMR

TEMPERATURE (°C)

VCC = 5.5V

MAX9140TOC09

45

40

35

30

PROPAGATION DELAY (nS)

25

20

PROPAGATION DELAY
vs. INPUT OVERDRIVE

t

PD+

t

PD-

04020 60 80 100

INPUT OVERDRIVE (mV)

MAX9140 toc10

PROPAGATION DELAY

vs. TEMPERATURE

50

45

40

35

PROPAGATION DELAY (ns)

30

25

-50 0-25 25 50 75 100

t

PD+

t

PD-

TEMPERATURE (°C)

MAX9140 toc11

55

50

45

40

35

30

PROPAGATION DELAY (ns)

25

20

15 45 6030 75 90 105

PROPAGATION DELAY

vs. CAPACITIVE LOAD

t

PD+

t

PD-

CAPACITIVE LOAD (pF)

MAX9140 toc12