MAX9144EUD+T - Maxim Integrated - Datasheet.Directory

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 devices 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 devices 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

●AEC-Q100 Qualified (MAX9140AAXK/V+T Only)

19-2064; Rev 8; 1/19

Click here for production status of specic part numbers.

N.C.

OUT

GND LE

SHDN

IN-

IN+

VCC VCC

VCC

SOT23/SO

OUTB

INB-

INB+

GND

INA+

INA-

OUTA

SOT23/SO

OUTD

IND-

IND+

GND

INA+

INA-

OUTA

INC+

INC-

OUTC

OUTB

INB-

INB+

TSSOP/SO

TOP VIEW

A D

B C

GND

IN-IN+

1 5 VCC

OUT

SC70/SOT23

3 4

MAX9142

MAX9141

MAX9144

MAX9140

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

Pin Congurations

Power-Supply Ranges

Supply Voltage (VCC to GND) ...........................................+6V

IN+, IN- to GND .................................... -0.3V to (VCC + 0.3V)

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

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

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

Input/Output Short-Circuit Duration to

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

Continuous Power Dissipation (TA = +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

Junction Temperature ...................................................... +150°C

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

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

(VCC = 5V, VCM = 0V, SHDN = LE = VCC (MAX9141 only), CL = 15pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are

at TA = +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Operating Supply Voltage VCC (Note 2) 2.7 5.5 V

Input Voltage Range VCMR (Note 3) -0.2 VCC +

0.2 V

Input O󰀨set Voltage VOS (Note 4)

TA = +25°C 0.5 2.0

mVTA = -40°C to +85°C 4.5

MAX9140AA_ _ 6.0

Input Hysteresis VHYST (Note 5) 1.5 mV

Input Bias Current IB(Note 6) TA = -40°C to +85°C 90 320 nA

MAX9140AA_ _ 350

Input O󰀨set Current IOS

TA = -40°C to +85°C 8 120 nA

MAX9140AA_ _ 140

Common-Mode Rejection Ratio CMRR VCC = 5.5V

(Note 7)

TA = -40°C to +85°C 80 800 µV/V

MAX9140AA_ _ 850

Power-Supply Rejection Ratio PSRR 2.7V ≤ VCC ≤

5.5V

TA = -40°C to +85°C 80 750 µV/V

MAX9140AA_ _ 800

Output High Voltage VOH

ISOURCE =

4mA

TA = -40°C to +85°C VCC -

0.425

VCC -

0.3 V

MAX9140AA_ _ VCC - 0.47

Output Low Voltage VOL ISINK = 4mA TA = -40°C to +85°C 0.3 0.425 V

MAX9140AA_ _ 0.45

Output Leakage Current ILEAK SHDN = GND, MAX9141 only (Note 8) 0.04 1 µA

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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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.

Electrical Characteristics

(VCC = 5V, VCM = 0V, SHDN = LE = VCC (MAX9141 only), CL = 15pF, TA = TMIN to TMAX, unless otherwise noted. Typical values are

at TA = +25°C.) (Note 1)

Note 1: All devices are 100% production tested at TA = +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: VOS 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 IB reverses direction as VCM approaches either supply rail.

Note 7: Specified over the full common-mode voltage range (VCMR).

Note 8: Specification is for current flowing into or out of the output pin for VOUT driven to any voltage from VCC to 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 tPD+ and tPD- 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 (VOD = 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

Supply Current (Per Comparator) ICC

VCM = VCC = 3V

MAX9141 165 275

µA

MAX9140,

TA = -40°C to 85°C 150 250

MAX9140AA_ _ 360

MAX9142/MAX9144 150 250

VCM = VCC = 5V

MAX9141 200 320

MAX9140,

TA = -40°C to 85°C 165 300

MAX9140AA_ _ 400

MAX9142/MAX9144 165 300

MAX9141 only, SHDN = GND;

VCC = VCM = 3V 12 30

Propagation Delay tPD+,

tPD-

VCC = 3V, VOD = 10mV 40 ns

Di󰀨erential Propagation Delay dtPD VOD = 10mV (Note 9) 2 ns

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

Logic Input-Voltage High VIH (Note 11) (VCC/2)

+0.4 VCC/2 V

Logic Input-Voltage Low VIL (Note 11) VCC/2 (VCC/2)

-0.4 V

Logic Input Current IIL, IIH VLOGIC = 0 to VCC (Note 11) 2 10 µA

Data-to-Latch Setup Time tS(Note 12) 16 ns

Latch-to-Data Hold Time tH(Note 12) 16 ns

Latch Pulse Width tLPW (Note 12) 45 ns

Latch Propagation Delay tLPD (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

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Electrical Characteristics (continued)

(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)

320

322

326

324

328

330

-40 0-20 20 40 60 80 100

OUTPUT LOW VOLTAGE

vs. TEMPERATURE

MAX9140 TOC02

TEMPERATURE (°C)

VOL (mV)

ISINK = 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)

VOH (V)

ISOURCE = 4mA

VCC = 5.5V

-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)

-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)

100

200

150

250

300

3456

MAX9140 SUPPLY CURRENT

vs. SUPPLY VOLTAGE

MAX9140 toc01

VCC (V)

ICC (A)

TA = +85∞C

TA = +25∞C

TA = -40∞C

120

100

140

-50 0 25-25 50 75 100

INPUT BIAS CURRENT

vs. TEMPERATURE

MAX9140 toc06

TEMPERATURE (°C)

INPUT CURRENT (nA)

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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Typical Operating Characteristics

(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)

-500

-200

-300

-400

-100

100

200

300

400

500

-50 0-25 25 50 75 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

MAX9140 toc07

TEMPERATURE (°C)

VOS (µV)

-1.0

-0.4

-0.6

-0.8

-0.2

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)

VOS (mV)

VTRIP+

VTRIP-

-1

-40 0-20 20 40 60 80 100

INPUT VOLTAGE RANGE

vs. TEMPERATURE

MAX9140TOC09

TEMPERATURE (°C)

INPUT VOLTAGE RANGE (V)

VCMR+

VCMR-

VCC = 5.5V

0 4020 60 80 100

PROPAGATION DELAY

vs. INPUT OVERDRIVE

MAX9140 toc10

INPUT OVERDRIVE (mV)

PROPAGATION DELAY (nS)

tPD+

tPD-

-50 0-25 25 50 75 100

PROPAGATION DELAY

vs. TEMPERATURE

MAX9140 toc11

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

tPD+

tPD-

15 45 6030 75 90 105

PROPAGATION DELAY

vs. CAPACITIVE LOAD

MAX9140 toc12

CAPACITIVE LOAD (pF)

PROPAGATION DELAY (ns)

tPD+

tPD-

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

Maxim Integrated

│

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Typical Operating Characteristics (continued)

(VCC = 3.0V, VCM = 0V, CL = 15pF, VOD = 10mV, TA = +25°C, unless otherwise noted.)

PIN NAME FUNCTION

MAX9140 MAX9141 MAX9142 MAX9144

— — 1 1 OUTA Comparator A Output

— — 2 2 INA- Comparator A Inverting Input

— — 3 3 INA+ Comparator A Noninverting Input

5 1 8 4 VCC Positive Supply

— — 5 5 INB+ Comparator B Noninverting Input

— — 6 6 INB- Comparator B Inverting Input

— — 7 7 OUTB Comparator B Output

— — — 8 OUTC Comparator C Output

— — — 9 INC- Comparator C Inverting Input

— — — 10 INC+ Comparator C Noninverting Input

2 4 4 11 GND Ground

— — — 12 IND+ Comparator D Noninverting Input

— — — 13 IND- Comparator D Inverting Input

— — — 14 OUTD Comparator D Output

3 2 — — IN+ Noninverting Input

4 3 — — IN- Inverting Input

—6— — SHDN Shutdown: MAX9141 is active when SHDN is driven high;

MAX9141 is in shutdown when SHDN is driven low.

—5— — LE The output is latched when LE is low. The latch is transparent

when LE is high.

1 7 — — OUT Comparator Output

—8— — N.C. No Connection. Not internally connected.

OUTPUT

2V/div

INPUT

50mV/div

PROPAGATION DELAY (tPD-)

MAX9140TOC13

10ns/div

VOD = 10mV

VCC = 5.5V

OUTPUT

2V/div

INPUT

50mV/div

PROPAGATION DELAY (tPD+)

MAX9140TOC14

10ns/div

VOD = 10mV

VCC = 5.5V

OUTPUT

2V/div

INPUT

50mV/div

SINUSOID RESPONSE AT 4MHz

MAX9140TOC15

50ns/div

VCC = 5.5V

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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Pin Description

Typical Operating Characteristics (continued)

Detailed Description

The MAX9140/MAX9141/MAX9142/MAX9144 single-

supply comparators feature internal hysteresis, high

speed, and low power. Their outputs are pulled to within

300mV of either supply rail without external pullup or

pulldown circuitry. Rail-to-rail input voltage range and low-

voltage single-supply operation make these devices ideal

for portable equipment. The devices interface directly to

CMOS and TTL logic.

Most high-speed comparators oscillate in the linear region

because of noise or undesired parasitic feedback. This

tends to occur when the voltage on one input is at or

equal to the voltage on the other input. To counter the

parasitic effects and noise, the devices have an internal

hysteresis of 1.5mV.

The hysteresis in a comparator 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. The average of the trip points is the offset

voltage. When the comparator’s input voltages are equal,

the hysteresis effectively causes one comparator input

voltage to move quickly past the other, thus taking the

input out of the region where oscillation occurs. Standard

comparators require hysteresis to be added with external

resistors. The devices’ fixed internal hysteresis eliminates

these resistors. To increase hysteresis and noise margin

even more, add positive feedback with two resistors as a

voltage divider from the output to the noninverting input.

Figure 1 illustrates the case where IN- is fixed and IN+ is

varied. If the inputs were reversed, the figure would look

the same, except the output would be inverted.

The MAX9141 includes an internal latch that allows

storage of comparison results. The LE pin has a high input

impedance. If LE is high, the latch is transparent (i.e., the

comparator operates as though the latch is not present).

The comparator’s output state is latched when LEis pulled

low (Figure 2).

Shutdown Mode (MAX9141 Only)

The MAX9141 shuts down when the SHDN pin is low. When

shut down, the supply current drops to less than 12μA, and

the three-state output becomes high impedance. The SHDN

pin has a high-input impedance. Connect SHDN to VCC for

normal operation. Exit shutdown with LE high (transparent

state); otherwise, the output will be indeterminate.

Input Stage Circuitry

The devices include internal protection circuitry that prevents

damage to the precision input stage from large differential

input voltages. This protection circuitry consists of two

back-toback diodes between IN+ and IN- as well as two

series 4.1kΩ resistors (Figure 3). The diodes limit the

differential voltage applied to the internal circuitry of the

comparators to be no more than 2VF, where VF is the

forward voltage drop of the diode (about 0.7V at +25°C).

For a large differential input voltage (exceeding 2VF), this

protection circuitry increases the input bias current at IN+

(source) and IN- (sink).

(IN+ - IN-) - 2V

Input Current 2 4.1k

×Ω

Input current with large differential input voltages should

not be confused with input bias current (IB). As long as the

differential input voltage is less than 2VF, this input current

is equal to IB. The output is in the correct logic state if one

or both inputs are within the common-mode range.

Figure 1. Input and Output Waveform, Noninverting Input

Varied

VTRIP+

VHYST

VTRIP-

COMPARATOR

OUTPUT

VOH

VOL

VTRIP+ + VTRIP-

VOS =

VIN- = 0

VIN+

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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Output Stage Circuitry

The MAX9140/MAX9141/MAX9142/MAX9144 contain a

current-driven output stage as shown in Figure 4. During

an output transition, ISOURCE or ISINK is pushed or pulled

to the output pin. The output source or sink current is high

during the transition, creating a rapid slew rate. Once the

output voltage reaches VOH or VOL, the source or sink

current decreases to a small value, capable of maintaining

the VOH or VOL static condition. This significant decrease

in current conserves power after an output transition has

occurred.

One consequence of a current-driven output stage is a

linear dependence between the slew rate and the load

capacitance. A heavy capacitive load will slow down a voltage

output transition. This can be useful in noisesensitive

applications where fast edges may cause interference.

Applications Information

Circuit Layout and Bypassing

The high-gain bandwidth of the MAX9140/MAX9141/

MAX9142/MAX9144 requires design precautions to real-

ize the full high-speed capabilities of these comparators.

The recommended precautions are:

1) Use a PCB with a good, unbroken, low-inductance

ground plane.

2) Place a decoupling capacitor (a 0.1μF ceramic capacitor

is a good choice) as close to VCC as possible.

3) Pay close attention to the decoupling capacitor’s bandwidth,

keeping leads short.

4) On the inputs and outputs, keep lead lengths short to avoid

unwanted parasitic feedback around the comparators.

5) Solder the device directly to the PCB instead of using

a socket.

Figure 2. MAX9141 Timing Diagram with Latch Operator

Figure 3. Input Stage Circuitry

VOH

tLPW

OUT

tLPD

tPD

VCC

VOL

DIFFERENTIAL

INPUT

VOLTAGE

VOS

VOD

4.1kΩ

TO INTERNAL

CIRCUITRY

TO INTERNAL

CIRCUITRY

IN–

IN+

MAX9140

MAX9141

MAX9142

MAX9144

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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Figure 4. Output Stage Circuitry Figure 5. 3.3V Digitally Controlled Threshold Detector

Figure 6. Line Receiver Application

ISOURCE

ISINK

VCC

GND

OUTPUT

MAX9140

MAX9141

MAX9142

MAX9144

ANALOG IN

VSS

SERIAL

DIGITAL

INPUT

VDD

SDI

DACOUTC

VDD = 3.3V

VREFC

8-BIT DAC

GND

MAX512

MAX9140

CLEAN

DIGITAL

SIGNAL

10kΩ

20kΩ

VCC = 3V

COAX LINE

MAX9140

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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Chip Information

PROCESS: Bipolar

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.

Ordering Information

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 —

PACKAGE TYPE PACKAGE CODE DOCUMENT NO. LAND PATTERN NO.

8 SOT23 K8-5 21-0078 90-0176

5 SOT23 U5-1 21-0057 90-0174

5 SC70 X5+1 21-0076 90-0188

14 TSSOP U14-1 21-0066 90-0113

8 SO S8-2 21-0041 90-0096

14 SO S14-1 21-0041 90-0112

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

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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.

REVISION

NUMBER

REVISION

DATE DESCRIPTION PAGES

CHANGED

0 6/01 Initial release —

1 1/07 Updated Absolute Maximum Ratings with ±20mA current into input pin. 2

2 12/07 Added two new automotive grade products. 1, 2

3 1/10 Added automotive qualied part 1

4 6/14 Added Junction Temperature to Absolute Maximum Ratings 2

5 9/15 Removed MAX9140AAXK/V from Ordering Information and edited the

Absolute Maximum Ratings 1, 2

6 10/15 Updated TOC7 and TOC8 in the Typical Operating Characteristics section 6

7 11/17 Added AEC statement to Features section and updated Ordering Information

table 1, 9

8 1/19 Removed embedded package outline drawings 10–13

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 specications 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.

MAX9140/MAX9141/

MAX9142/MAX9144

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

Single-Supply Comparators

│

Revision History

For pricing, delivery, and ordering information, please visit Maxim Integrated’s online storefront at https://www.maximintegrated.com/en/storefront/storefront.html.