MAXIM MAX987, MAX988, MAX991, MAX992, MAX995 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 MAX987/MAX988/MAX991/MAX992/MAX995/
MAX996 single/dual/quad micropower comparators
feature low-voltage operation and rail-to-rail inputs and
outputs. Their operating voltage ranges from +2.5V to
+5.5V, making them ideal for both 3V and 5V systems.
These comparators also operate with ±1.25V to ±2.75V
dual supplies. They consume only 48µA per compara­tor while achieving a 120ns propagation delay.

Input bias current is typically 1.0pA, and input offset volt­age is typically 0.5mV. Internal hysteresis ensures clean
output switching, even with slow-moving input signals.

The output stage’s unique design limits supply-current
surges while switching, virtually eliminating the supply
glitches typical of many other comparators. The
MAX987/MAX991/MAX995 have a push-pull output
stage that sinks as well as sources current. Large inter­nal output drivers allow rail-to-rail output swing with
loads up to 8mA. The MAX988/MAX992/MAX996 have
an open-drain output stage that can be pulled beyond
VCCto 6V (max) above VEE. These open-drain versions
are ideal for level translators and bipolar to single­ended converters.

The single MAX987/MAX988 are available in tiny 5-pin
SC70 packages, while the dual MAX991/MAX992 are
available in ultra-small 8-pin SOT23 and µMAX®pack­ages.

____________________________Features

♦ 120ns Propagation Delay

♦ 48µA Quiescent Supply Current

♦ +2.5V to +5.5V Single-Supply Operation

♦ Common-Mode Input Voltage Range Extends

250mV Beyond the Rails

♦ Push-Pull Output Stage Sinks and Sources

8mA Current (MAX987/MAX991/MAX995)

♦ Open-Drain Output Voltage Extends Beyond V

CC

(MAX988/MAX992/MAX996)

♦ Unique Output Stage Reduces Output Switching

Current, Minimizing Overall Power Consumption

♦ 100µA Supply Current at 1MHz Switching

Frequency

♦ No Phase Reversal for Overdriven Inputs

♦ Available in Space-Saving Packages:

5-Pin SOT23 (MAX987/MAX988)

8-Pin µMAX (MAX991/MAX992)

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

________________________________________________________________ Maxim Integrated Products 1

V

CC

IN-

IN+

1

5

V

EE

OUT

MAX987
MAX988

SOT23/SC70

TOP VIEW

2

3

4

Pin Configurations

19-1266; Rev 2; 1/07

_______________Ordering Information

Ordering Information continued at end of data sheet.

Typical Application Circuit appears at end of data sheet.

Pin Configurations continued at end of data sheet.

Portable/Battery­Powered Systems

Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators

Threshold Detectors/
Discriminators

Ground/Supply Sensing
IR Receivers
Digital Line Receivers

Selector Guide

Applications

PART PIN-PACKAGE

PKG

TOP

MARK

MAX987EXK-T 5 SC70-5

X5-1

ABM

MAX987EUK-T 5 SOT23-5

U5-1

ABZB

MAX987ESA 8 SO

S8-2

—

µMAX is a registered trademark of Maxim Integrated Products,
Inc.

Note: All devices specified over the -40°C to +85°C operating
temperature range.

CODE

PART

MAX987 1 Push-Pull

MAX988 1 Open-Drain

MAX991 2 Push-Pull

MAX992 2 Open-Drain

MAX995 4 Push-Pull

MAX996 4 Open-Drain

COMPARATORS

PER PACKAGE

OUTPUT

STAGE

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS (Note 1)

(VCC= +2.7V to +5.5V, VEE= 0V, VCM= 0V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°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.

Supply Voltage (VCCto VEE) ...................................................6V

IN_-, IN_+ to V

EE

.......................................-0.3V to (VCC+ 0.3V)

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

OUT_ to V

EE

MAX987/MAX991/MAX995 ....................-0.3V to (VCC+ 0.3V)

MAX988/MAX992/MAX996 ..................................-0.3V to +6V

OUT_ Short-Circuit Duration to V

EE

or VCC...........................10s

Continuous Power Dissipation (T

A

= +70°C)

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

5-Pin SOT23 (derate 7.10mW/°C above +70°C)...........571mW

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

8-Pin SO (derate 5.88mW/°C above +70°C).................471mW

8-Pin µMAX (derate 4.5mW/°C above +70°C) ..............362mW

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

14-Pin SO (derate 8.33mW/°C above +70°C)...............667mW

Operating Temperature Range ...........................-40°C to +85°C

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

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

Inferred from PSRR test

CONDITIONS

V2.5 5.5V

CC

Supply Voltage

UNITSMIN TYP MAXSYMBOLPARAMETER

53 80

2.5V ≤ VCC≤ 5.5V dB55 80PSRRPower-Supply Rejection Ratio

VCC= 5V

96

mV

±0.5 ±5

TA= +25°C

VEE-V

CC

+

0.25 0.25

±2.5V

HYST

Input Hysteresis

Full common-mode
range

nAI

B

Input Bias Current
(Note 4)

0.001 10

pF1.0C

IN

Input Capacitance

dB50 80CMRRCommon-Mode Rejection Ratio

pA0.5I

OS

Input Offset Current

±7

V

OS

Input Offset Voltage
(Note 3)

V

OUT

= high µA1.0I

LEAK

Output Leakage Current
(MAX988/MAX992/
MAX996 only)

35

95

TA= +25°C

TA= -40°C to +85°C

48 80

VCC= 2.7V

µA

96

I

CC

Supply Current per
Comparator

TA= +25°C

TA= -40°C to +85°C

Sourcing or sinking,
V

OUT

= V

EE

or V

CC

I

SC

Output Short-Circuit Current

TA= +25°C

TA= -40°C to +85°C

TA= -40°C to +85°C V

EE

V

CC

VV

CMR

Common-Mode Voltage
Range (Note 2)

mV

VCC= 5V

VCC= 2.7V

mA

VCC= 5V,
I

SINK

= 8mA

0.55

0.2 0.4

V

OL

OUT Output-Voltage Low

VCC= 2.7V,
I

SINK

= 3.5mA

V

0.4

0.15 0.3

TA= +25°C

TA= -40°C to +85°C

TA= +25°C

TA= -40°C to +85°C

TA= +25°C

VCC= 5V,
I

SOURCE

= 8mA

TA= -40°C to +85°C 4.45

4.6 4.85

V

OH

TA= +25°C

OUT Output-Voltage High
(MAX987/MAX991/
MAX995 Only)

VCC= 2.7V,
I

SOURCE

= 3.5mA

TA= -40°C to +85°C

V

2.3

2.4 2.55

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(VCC= +2.7V to +5.5V, VEE= 0V, VCM= 0V, TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 5.0V ns

40

t

RISE

OUT Rise Time
(MAX987/MAX991/
MAX995 Only)

20

15

µs25t

PU

Power-Up Time

nsVCC= 5.0V

40

t

FALL

OUT Fall Time 20

15

120

210

100mV overdrive

100mV overdrive

CL= 15pF,
VCC= 5V

120

t

PD+

Propagation Delay

210

ns

210

t

PD-

120

MAX987/MAX991/
MAX995 only

10mV overdrive

100mV overdrive

MAX987/MAX991/MAX995
only, CL= 15pF, VCC= 5V

10mV overdrive

10mV overdrive

CL= 15pF

CL= 50pF

CL= 200pF

CL= 15pF

CL= 50pF

CL= 200pF

MAX988/MAX992/
MAX996 only,
R

PULLUP

= 5.1kΩ

Note 1: All device specifications are 100% production tested at TA= +25°C. Limits over the extended temperature range are guar-

anteed by design, not production tested.

Note 2: Inferred from the V

OS

test. Either or both inputs can be driven 0.3V beyond either supply rail without output phase reversal.

Note 3: V

OS

is defined as the center of the hysteresis band at the input.

Note 4: I

B

is defined as the average of the two input bias currents (IB-, IB+).

Typical Operating Characteristics

(VCC= +5V, VCM= 0V, TA= +25°C, unless otherwise noted.)

30

40

50

60

70

80

90

-60 -20-40 0 20 40 60 80 100

SUPPLY CURRENT PER COMPARATOR

vs. TEMPERATURE

MAX9879 TOC1

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

VCC = 5.5.V

VCC = 2.5.V

V

IN+

> V

IN-

1000

10

0.01 0.1 1 10 100 1000 10,000

SUPPLY CURRENT PER COMPARATOR

vs. OUTPUT TRANSITION FREQUENCY

MAX987 TOC2

OUTPUT TRANSITION FREQUENCY (kHz)

SUPPLY CURRENT (µA)

100

VCC = 2.5V

VCC = 5.5V

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

4 _______________________________________________________________________________________

10,000

1

0.01 0.1 1 10 100

OUTPUT LOW VOLTAGE

vs. OUTPUT SINK CURRENT

MAX987-03a

OUTPUT SINK CURRENT (mA)

OUTPUT LOW VOLTAGE (mV) (V

OL

)

10

100

1000

V

IN+

< V

IN-

VCC = 2.7V

V

CC

= 5.0V

120

0

-60 100

OUTPUT SHORT-CIRCUIT

CURRENT vs. TEMPERATURE

20
10

90

80

110
100

MAX987 05

TEMPERATURE (°C)

OUTPUT SINK CURRENT (mA)

-40-200 20406080

70
60
50

40
30

VCC = 5.0V

VCC = 2.7V

1.1

-0.3

-60 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

-0.1

0.7

0.9

MAX987 06

TEMPERATURE (°C)

OFFSET VOLTAGE (mV)

-40 -20 0 20 40 60 80

0.5

0.3

0.1

10,000

0.1

0.01

0.1

110100

OUTPUT HIGH VOLTAGE

vs. OUTPUT SOURCE CURRENT

1

MAX987-04

OUTPUT SOURCE CURRENT (mA)

OUTPUT HIGH VOLTAGE

(mV) (V

CC

- V

OH

)

10

100

1000

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.7V

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 5

100

110

130

150

170

190

120

140

160

180

200

-60 -20-40 0 20 40 60 80 100

PROPAGATION DELAY

vs. TEMPERATURE

MAX987 TOC9

TEMPERATURE (°C)

PROPAGATION DELAY (ns)

VCC = 5.5.V

VCC = 2.5.V

VOD = 50mV

1000

10,000

100

0.01 0.1 101 100 1000

PROPAGATION DELAY
vs. CAPACITIVE LOAD

MAX987 TOC8

CAPACITIVE LOAD (nF)

PROPAGATION DELAY (ns)

VOD = 50mV

300

0

0 60 120

20 8040 100

140

PROPAGATION DELAY
vs. INPUT OVERDRIVE

100

50

250

200

150

MAX987 TOC10

INPUT OVERDRIVE (mV)

PROPAGATION DELAY (ns)

VCC = 2.5V

VCC = 5.5V

PROPAGATION DELAY (t

PD-

)

IN+

OUT

MAX987-12

100ns/div

50mV/div

2V/div

V

OD

= 50mV

MAX987/MAX991/MAX995

PROPAGATION DELAY (t

PD+

)

IN+

OUT

MAX987-11

100ns/div

50mV/div

2V/div

V

OD

= 50mV

MAX987/MAX991/MAX995

SWITCHING CURRENT, OUT RISING

IN+

OUT

I

CC

MAX987-13

200ns/div

50mV/div

2V/div

2mA/div

V

OD

= 50mV

Typical Operating Characteristics (continued)

(VCC= +5V, VCM= 0V, TA= +25°C, unless otherwise noted.)

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

6 _______________________________________________________________________________________

POWER-UP DELAY

V

CC

OUT

MAX987-16

5µs/div

2V/div

2V/div

V

IN-

= 50mV

V

IN+

= 0V

SWITCHING CURRENT, OUT FALLING

IN+

OUT

I

CC

MAX987-14

200ns/div

50mV/div

2V/div

2mA/div

VOD = 50mV

1MHZ RESPONSE

IN+

OUT

MAX987-15

200ns/div

50mV/div

2V/div

VOD = 50mV

Typical Operating Characteristics (continued)

(VCC= +5V, VCM= 0V, TA= +25°C, unless otherwise noted.)

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 7

______________________________________________________________Pin Description

N.C.——— 1, 5, 8 No Connection. Not internally connected.

IND-

OUTD

IND+

INC+

13

14

12

10

—

—

—

—

OUTC

INC-

OUTB

—

INA-

INB+

INB-

INA+

OUTA

V

CC

IN-

V

EE

IN+

—

OUT

Comparator D Inverting Input

8

9

7

—

2

5

6

3

1

4

—

11

—

—

—

Comparator D Output

—

—

7

—

2

5

6

3

1

8

—

4

—

—

—

Comparator D Noninverting Input

— — Comparator C Output

— — Comparator C Inverting Input

— — Comparator B Output

— — Comparator C Noninverting Input

— — Comparator A Inverting Input

— — Comparator B Noninverting Input

— — Comparator B Inverting Input

— — Comparator A Noninverting Input

— — Comparator A Output

2 7 Positive Supply Voltage

4 2 Comparator Inverting Input

5 4 Negative Supply Voltage

3 3 Comparator Noninverting Input

1 6 Comparator Output

SO/

TSSOP

MAX995
MAX996

MAX991
MAX996

SO/µMAX/

SOT23

MAX987
MAX988

SOT23/

SC70

SO

PIN

NAME FUNCTION

Detailed Description

The MAX987/MAX988/MAX991/MAX992/MAX995/
MAX996 are single/dual/quad low-power, low-voltage
comparators. They have an operating supply voltage
range between +2.5V and +5.5V and consume only
48µA per comparator, while achieving 120ns propaga­tion delay. Their common-mode input voltage range
extends 0.25V beyond each rail. Internal hysteresis
ensures clean output switching, even with slow-moving
input signals. Large internal output drivers allow rail-to­rail output swing with up to 8mA loads.

The output stage employs a unique design that mini­mizes supply-current surges while switching, virtually
eliminating the supply glitches typical of many other
comparators. The MAX987/MAX991/MAX995 have a
push-pull output structure that sinks as well as sources
current. The MAX988/MAX992/MAX996 have an open­drain output stage that can be pulled beyond VCCto an
absolute maximum of 6V above VEE.

Input Stage Circuitry

The devices’ input common-mode range extends from

-0.25V to (VCC+ 0.25V). These comparators may oper­ate at any differential input voltage within these limits.
Input bias current is typically 1.0pA if the input voltage
is between the supply rails. Comparator inputs are pro­tected from overvoltage by internal body diodes con­nected to the supply rails. As the input voltage exceeds
the supply rails, these body diodes become forward
biased and begin to conduct. Consequently, bias cur­rents increase exponentially as the input voltage
exceeds the supply rails.

Output Stage Circuitry

These comparators contain a unique output stage
capable of rail-to-rail operation with up to 8mA loads.
Many comparators consume orders of magnitude more
current during switching than during steady-state oper­ation. However, with this family of comparators, the
supply-current change during an output transition is
extremely small. The Typical Operating Characteristics
Supply Current vs. Output Transition Frequency graph
shows the minimal supply-current increase as the out­put switching frequency approaches 1MHz. This char­acteristic eliminates the need for power-supply filter
capacitors to reduce glitches created by comparator
switching currents. Battery life increases substantially
in high-speed, battery-powered applications.

Applications Information

Additional Hysteresis

MAX987/MAX991/MAX995

The MAX987/MAX991/MAX995 have ±2.5mV internal
hysteresis. Additional hysteresis can be generated with
three resistors using positive feedback (Figure 1).
Unfortunately, this method also slows hysteresis
response time. Use the following procedure to calcu­late resistor values for the MAX987/MAX991/MAX995.

1) Select R3. Leakage current at IN is under 10nA;
therefore, the current through R3 should be at least
1µA to minimize errors caused by leakage current.
The current through R3 at the trip point is (V

REF

-

V

OUT

) / R3. Considering the two possible output
states and solving for R3 yields two formulas: R3 =
V

REF

/ 1µA or R3 = (V

REF

- VCC) / 1µA. Use the
smaller of the two resulting resistor values. For
example, if V

REF

= 1.2V and VCC= 5V, then the two

R3 resistor values are 1.2MΩ and 3.8MΩ. Choose a

1.2MΩ standard value for R3.

2) Choose the hysteresis band required (VHB). For this
example, choose 50mV.

3) Calculate R1 according to the following equation:

R1 = R3 x (V

HB

/ VCC)

For this example, insert the values R1 = 1.2MΩ x
(50mV / 5V) = 12kΩ.

4) Choose the trip point for VINrising (V

THR

; V

THF

is

the trip point for V

IN

falling). This is the threshold
voltage at which the comparator switches its output
from low to high as V

IN

rises above the trip point. For

this example, choose 3V.

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

V

CC

MAX987
MAX991
MAX995

OUT

0.1µF

R3

R1

R2

V

REF

V

EE

V

IN

V

CC

Figure 1. Additional Hysteresis (MAX987/MAX991/MAX995)

8 _______________________________________________________________________________________

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 9

5) Calculate R2 as shown. For this example, choose an

8.2kΩ standard value:

6) Verify trip voltages and hysteresis as follows:

MAX988/MAX992/MAX996

The MAX988/MAX992/MAX996 have ±2.5mV internal
hysteresis. They have open-drain outputs and require
an external pullup resistor (Figure 2). Additional hys­teresis can be generated using positive feedback, but
the formulas differ slightly from those of the
MAX987/MAX991/MAX995.

Use the following procedure to calculate resistor
values:

1) Select R3 according to the formulas R3 = V

REF

/ 1µA

or R3 = (V

REF

- VCC) / 1µA - R4. Use the smaller of

the two resulting resistor values.

2) Choose the hysteresis band required (VHB). For this
example, choose 50mV.

3) Calculate R1 according to the following equation:

R1 = (R3 + R4) x (VHB/ VCC)

4) Choose the trip point for VINrising (V

THR

; V

THF

is
the trip point for VINfalling). This is the threshold
voltage at which the comparator switches its output
from low to high as VINrises above the trip point.

5) Calculate R2 as follows:

6) Verify trip voltages and hysteresis as follows:

Circuit Layout and Bypassing

These comparators’ high-gain bandwidth requires
design precautions to maximize their high-speed capa­bility. The recommended precautions are:

1) Use a PCB with an unbroken, low-inductance
ground plane.

2) Place a decoupling capacitor (a 0.1µF ceramic
capacitor is a good choice) as close to VCCas
possible.

3) On the inputs and outputs, keep lead lengths short
to avoid unwanted parasitic feedback around the
comparators.

4) Solder the devices directly to the PCB instead of
using a socket.

V rising: V = V x R1 x

1

R1

V falling

IN THR REF

IN

:

++

+

⎛
⎝

⎜

⎞
⎠

⎟

= −

+

⎛
⎝

⎜

⎞
⎠

⎟

= −

1

2

1

34

1

34

RRR

VV

RxV

RR

Hysteresis V V

THF THR

CC

THR THF

R2 =

1

V

V

THR

REF

xR R R R1

1

1

1

34

⎛

⎝

⎜

⎞

⎠

⎟

−−

+

V rising: V = V x R1 x

1

R1

V falling

IN THR REF

IN

:

++

⎛
⎝

⎜

⎞
⎠

⎟

= −

⎛
⎝

⎜

⎞
⎠

⎟

= −

1

2

1

3

1

3

RR

VV

RxV

R

Hysteresis V V

THF THR

CC

THR THF

R2 =

1

V

V

R2 =

1

3.0V

1.2 x 12k

THR

REF

.

.

xR R R

kM

k

1

1

1

1

3

1

12

1

22

803

⎛

⎝

⎜

⎞

⎠

⎟

−−

⎛
⎝

⎜

⎞
⎠

⎟

−−

=

ΩΩ Ω

Ω

V

EE

V

CC

OUT

R3

R2

R1

R4

0.1µF

V

REF

V

IN

V

CC

MAX988
MAX992
MAX996

Figure 2. Additional Hysteresis (MAX988/MAX992/MAX996)

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

10 ______________________________________________________________________________________

Zero-Crossing Detector

Figure 3 shows a zero-crossing detector application.
The MAX987’s inverting input is connected to ground,
and its noninverting input is connected to a 100mVp-p
signal source. As the signal at the noninverting input
crosses 0V, the comparator’s output changes state.

Logic-Level Translator

Figure 4 shows an application that converts 5V logic lev­els to 3V logic levels. The MAX988 is powered by the +5V
supply voltage, and the pullup resistor for the MAX988’s
open-drain output is connected to the +3V supply volt­age. This configuration allows the full 5V logic swing with­out creating overvoltage on the 3V logic inputs. For 3V to
5V logic-level translation, simply connect the +3V supply
to VCCand the +5V supply to the pullup resistor.

MAX987

IN+

4

3

OUT

1

2

5

V

CC

100mV

V

CC

V

EE

IN-

0.1µF

Figure 3. Zero-Crossing Detector Figure 4. Logic-Level Translator

Pin Configurations (continued)

14

13

12

11

10

9

8

1

2

3

4

5

6

7

OUTD

IND-

IND+

V

EE

V

CC

INA+

INA-

OUTA

MAX995
MAX996

INC+

INC-

OUTCOUTB

INB-

INB+

SO/TSSOP

OUT

N.C.

V

EE

1

2

87N.C.

V

CC

IN-

IN+

N.C.

SO

TOP VIEW

3

4

6

5

MAX987
MAX988

INB-

INB+

V

EE

1

2

87V

CC

OUTB

INA-

INA+

OUTA

SO/µMAX/SOT23

3

4

6

5

MAX991
MAX992

+5V (+3V)

0.1µF
+3V (+5V)

100kΩ

4

100kΩ

3

5V (3V) LOGIC IN

IN-

IN+

V

CC

V

2

EE

5

MAX988

OUT

R

PULLUP

3V (5V)

1

LOGIC OUT

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

______________________________________________________________________________________ 11

__Ordering Information (continued)Typical Application Circuit

MAX98_
MAX99_

IN+

0.1µF

*R

PULLUP

THRESHOLD DETECTOR

* MAX988/MAX992/MAX996 ONLY

V

IN

OUT

V

CC

V

CC

V

EE

V

REF

IN-

__________________________________________________Tape-and-Reel Information

4.0 ±0.1

0.30 ±0.05

0.8 ±0.05

0.30R MAX.

B

o

Ko

2.2 ±0.1

0.5 RADIUS
TYPICAL

A0

4.0 ±0.1

2.0 ±0.05

1.5 +0.1/-0.0 DIAMETER

1.75 ±0.1

1.0 ±0.1

A

8.0 ±0.3

3.5 ±0.05

1.0 MINIMUM

A

Ao = 3.1mm ±0.1
Bo = 2.7mm ±0.1
Ko = 1.2mm ±0.1

NOTE: DIMENSIONS ARE IN MM. AND

FOLLOW EIA481-1 STANDARD.

PART PIN-PACKAGE

PKG

TOP

MARK

MAX988EXK-T 5 SC70-5

X5-1

ABN

MAX988EUK-T 5 SOT23-5

U5-1

ABZC

MAX988ESA 8 SO

S8-2

—

MAX991EKA-T 8 SOT23-8

K8-5

AAEB

MAX991EUA-T 8 µMAX-8

U8-1

—

MAX991ESA 8 SO

S8-2

—

MAX992EKA-T 8 SOT23-8

K8-5

AAEC

MAX992EUA-T 8 µMAX-8

U8-1

—

MAX992ESA 8 SO

S8-2

—

MAX995EUD 14 TSSOP

U14-1

—

MAX995ESD 14 SO

S14-4

—

MAX996EUD 14 TSSOP

U14-1

—

MAX996ESD 14 SO

S14-4

—

Note: All devices specified over the -40°C to +85°C operating
temperature range.

CODE

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,
SOT23, Rail-to-Rail I/O Comparators

12 ______________________________________________________________________________________

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages

.)

SOT-23 5L .EPS

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13

© 2007 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.

MAX987/MAX988/MAX991/MAX992/MAX995/MAX996

High-Speed, Micropower, Low-Voltage,

SOT23, Rail-to-Rail I/O Comparators

8LUMAXD.EPS

PACKAGE OUTLINE, 8L uMAX/uSOP

1

1

21-0036

J

REV.DOCUMENT CONTROL NO.APPROVAL

PROPRIETARY INFORMATION

TITLE:

MAX

0.043

0.006

0.014

0.120

0.120

0.198

0.026

0.007

0.037

0.0207 BSC

0.0256 BSC

A2

A1

c

e

b

A

L

FRONT VIEW

SIDE VIEW

E H

0.6±0.1

0.6±0.1

Ø0.50±0.1

1

TOP VIEW

D

8

A2

0.030

BOTTOM VIEW

1

6°

S

b

L

H

E

D
e

c

0°

0.010

0.116

0.116

0.188

0.016

0.005

8

4X S

INCHES

-

A1

A

MIN

0.002

0.950.75

0.5250 BSC

0.25 0.36

2.95 3.05

2.95 3.05

4.78

0.41

0.65 BSC

5.03

0.66
6°0°

0.13 0.18

MAX

MIN

MILLIMETERS

- 1.10

0.05 0.15

α

α

DIM

Package Information (continued)

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages

.)

Revision History

Pages changed at Rev 2: 1–6, 8–13