MAXIM MAX9140, MAX9141, MAX9142, MAX9144 Technical data

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

0.45mW Power Dissipation Per Comparator (3V)
150µA Supply Current

♦ Optimized for 3V and 5V Applications

(Operation Down to 2.7V)

♦ 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

1

2

3

4

8

7

6

5

N.C.

OUT

GND

LE

SHDN

IN-

IN

+

V

CC

V

CC

V

CC

SOT23/SO

1

2

3

4

8

7

6

5

OUTB

INB-

INB

+

GND

INA

+

INA-

OUTA

MAX9142

SOT23/SO

14

13

12

11

10

9

8

1

2

3

4

5

6

7

OUTD

IND-

IND

+

GND

INA

+

INA-

OUTA

INC

+

INC-

OUTC

OUTB

INB-

INB

+

TSSOP/SO

MAX9141

MAX9144

TOP VIEW

A

B

AD

BC

GND

IN-IN+

15V

CC

OUT

SC70/SOT23

2

34

MAX9140

Pin Configurations

19-2064; Rev 1; 1/07

PART*

TOP

PKG

CODE

MAX9140EXK-T

5 SC70-5 ACC X5-1

MAX9140EUK-T

5 SOT23-5

U5-1

MAX9141EKA-T

8 SOT23-8 AAFD K8-5

MAX9141ESA 8 SO — S8-2

MAX9142EKA-T

8 SOT23-8 AAFE K8-5

MAX9142ESA 8 SO — S8-2

MAX9144EUD 14 TSSOP —

U14-1

MAX9144ESD 14 SO — S14-1

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.

*All devices specified over the -40°C to +85°C tempera-

ture range.

PIN-PACKAGE

MARK

ADQP

MAX9140/MAX9141/MAX9142/MAX9144

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

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(VCC= 5V, VCM= 0, 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 ...........................-40°C to +85°C

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

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

PARAMETER

SYMBOL

CONDITIONS MIN

TYP

MAX

UNITS

Operating Supply Voltage V

CC

(Note 2) 2.7 5.5 V

Input Voltage Range V

CMR

(Note 3) -0.2

0.2

V

TA = +25°C 0.5 2

Input Offset Voltage V

OS

(Note 4)

4.5

mV

Input Hysteresis

(Note 5) 1.5 mV

Input Bias Current I

B

(Note 6) 90 320 nA

Input Offset Current I

OS

8 120 nA

Common-Mode Rejection Ratio

VCC = 5.5V (Note 7) 80 800 µV/V

Power-Supply Rejection Ratio PSRR 2.7V ≤ VCC ≤ 5.5V 80 750 µV/V

Output High Voltage V

OH

I

SOURCE

= 4mA

0.3

V

Output Low Voltage V

OL

I

SINK

= 4mA 0.3

V

Output Leakage Current I

LEAK

SHDN = GND, MAX9141 only (Note 8)

1µA

MAX9141

275

MAX9140/MAX9142/
MAX9144

250

MAX9141

320

MAX9140/MAX9142/
MAX9144

300

Supply Current (Per Comparator)

I

CC

MAX9141 only, SHDN = GND;
V

CC

= V

CM

= 3V

12 30

µA

Propagation Delay

t

PD+

,

t

PD-

VCC = 3V, VOD = 10mV 40 ns

Differential Propagation Delay dt

PD

VOD = 10mV (Note 9) 2 ns

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

Logic Input-Voltage High V

IH

(Note 11)

+0.4

V

Logic Input-Voltage Low V

IL

(Note 11)

-0.4

V

Logic Input Current

V

LOGIC

= 0 to VCC (Note 11) 2 10 µA

VCC +

TA = T

V

HYST

CMRR

VCM = VCC = 3V

VCM = VCC = 5V

IIL, I

IH

MIN

to T

MAX

VCC -

0.425

(V

/ 2)

CC

VCC -

0.04

165

150

200

165

V

CC

V

CC

/ 2

/ 2

(V

0.425

CC

/ 2)

MAX9140/MAX9141/MAX9142/MAX9144

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

Single-Supply Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= 5V, VCM= 0, 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.

PARAMETER

SYMBOL

CONDITIONS MIN

TYP

MAX

UNITS

Data-to-Latch Setup Time t

S

(Note 12) 16 ns

Latch-to-Data Hold Time t

H

(Note 12) 16 ns

Latch Pulse Width t

LPW

(Note 12) 45 ns

Latch Propagation Delay t

LPD

(Note 12) 60 ns

Shutdown Enable Time (Note 13) 1 µs

Shutdown Disable Time (Note 13) 5 µs

MAX9140/MAX9141/MAX9142/MAX9144

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

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3.0V, V

CM

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

0

100

50

200

150

250

300

3456

MAX9140 SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX9140 toc01

VCC (V)

I

CC

(µA)

TA = +85°C

TA = +25°C

TA = -40°C

320

322

326

324

328

330

-40 0-20 20 40 60 80 100

OUTPUT LOW VOLTAGE

vs. TEMPERATURE

MAX9140 TOC02

TEMPERATURE (°C)

V

OL

(mV)

I

SINK

= 4mA

5.00

5.05

5.10

5.15

5.20

-40 0-20 20 40 60 80 100

OUTPUT HIGH VOLTAGE

vs. TEMPERATURE

MAX9140 TOC03

TEMPERATURE (°C)

V

OH

(V)

I

SOURCE

= 4mA

VCC = 5.5V

35

40

45

50

-40 0-20 20 40 60 80 100

OUTPUT SHORT-CIRCUIT (SINK) CURRENT

vs. TEMPERATURE

MAX9140 TOC04

TEMPERATURE (°C)

OUTPUT SHORT-CIRCUIT SINK CURRENT (mA)

15

25

35

45

-40 0-20 20 40 60 80 100

OUTPUT SHORT-CIRCUIT (SOURCE)

CURRENT vs. TEMPERATURE

MAX9140 TOC05

TEMPERATURE (°C)

OUTPUT SHORT-CIRCUIT SOURCE CURRENT (mA)

0

40

20

80

60

120

100

140

-50 0 25-25 50 75 100

INPUT BIAS CURRENT

vs. TEMPERATURE

MAX9140 toc06

TEMPERATURE (°C)

INPUT CURRENT (nA)