Maxim MAX985ESA, MAX985EUK-T, MAX993ESD, MAX990EUA, MAX994ESD Datasheet

_______________General Description

The MAX985/MAX986/MAX989/MAX990/MAX993/
MAX994 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 11µA of sup­ply current while achieving a 300ns propagation delay.

The common-mode input voltage range extends 250mV
beyond the supply rails. 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. This design
also minimizes overall power consumption under
dynamic conditions. The MAX985/MAX989/MAX993
have a push/pull output stage that sinks as well as
sources current. Large internal output drivers allow rail­to-rail output swing with loads up to 8mA. The
MAX986/MAX990/MAX994 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 single-ended converters.

The single MAX985/MAX986 are available in tiny 5-pin
SOT23 packages.

________________________Applications

____________________________Features

♦ 11µA Quiescent Supply Current
♦ +2.5V to +5.5V Single-Supply Operation
♦ Common-Mode Input Voltage Range Extends

250mV Beyond the Rails

♦ 300ns Propagation Delay
♦ Push/Pull Output Stage Sinks and Sources

8mA Current (MAX985/MAX989/MAX993)

♦ Open-Drain Output Voltage Extends Beyond V

CC

(MAX986/MAX990/MAX994)

♦ Unique Output Stage Reduces Output Switching

Current, Minimizing Overall Power Consumption

♦ 80µA Supply Current at 1MHz Switching

Frequency

♦ No Phase Reversal for Overdriven Inputs
♦ Available in Space-Saving Packages:

SOT23 (MAX985/MAX986)
µMAX (MAX989/MAX990)

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, SOT23,

Rail-to-Rail I/O Comparators

________________________________________________________________

Maxim Integrated Products

1

V

CC

IN-

IN+

1

5

V

EE

OUT

MAX985
MAX986

SOT23

TOP VIEW

2

3

4

_________________Pin Configurations

_____________________Selector Guide

19-1229; Rev 1; 7/97

PART

MAX985EUK-T

MAX985ESA
MAX986EUK-T

-40°C to +85°C

-40°C to +85°C

-40°C to +85°C

TEMP. RANGE

PIN-

PACKAGE

5 SOT23-5
8 SO
5 SOT23-5

______________Ordering Information

Ordering Information continued at end of data sheet.
Typical Application Circuit appears at end of data sheet.

COMPARATORS
PER PACKAGE

OUTPUT

STAGE

MAX985 1 Push/Pull

MAX989 2 Push/Pull

PART

MAX990 2 Open-Drain
MAX993 4 Push/Pull
MAX994 4 Open-Drain

PIN-

PACKAGE

8 SO/
5 SOT23-5

8 SO/µMAX
8 SO/µMAX
14 SO
14 SO

8 SO/
5 SOT23-5

MAX986 1 Open-Drain

Rail-to-Rail is a registered trademark of Nippon Motorola Ltd.

Pin Configurations continued at end of data sheet.

MAX986ESA -40°C to +85°C 8 SO

SOT

TOP MARK

ABYZ

—

ABZA

—

Portable/Battery­Powered Systems

Mobile Communications
Zero-Crossing Detectors
Window Comparators
Level Translators

Threshold Detectors/
Discriminators

Ground/Supply Sensing
Applications

IR Receivers
Digital Line Receivers

For free samples & the latest literature: http://www.maxim-ic.com, or phone [phone].
For small orders, phone [phone] ext. 3468.

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

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

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

(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.) (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.

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

IN_-, IN_+ to V

EE

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

OUT_ to V

EE

MAX985/MAX989/MAX993 ....................-0.3V to (VCC+ 0.3V)

MAX986/MAX990/MAX994.....................................-0.3V to 6V

OUT_ Short-Circuit Duration to V

EE

or VCC.......................10sec

Continuous Power Dissipation (T

A

= +70°C)

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

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

8-Pin µMAX (derate 4.10mW/°C above +70°C)............330mW

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

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

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

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

Inferred from PSRR test

CONDITIONS

V2.5 5.5V

CC

Supply Voltage

UNITSMIN TYP MAXSYMBOLPARAMETER

12 20

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

VCC= 5V

24

mV

±0.5 ±5

TA= +25°C

VEE- VCC+

0.25 0.25

±3V

HYST

Input Hysteresis

Full common-mode
range

nAI

B

Input Bias Current
(Note 4)

0.001 10

pF1.0C

IN

Input Capacitance

dB52 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
(MAX986/MAX990/
MAX994 only)

35

95

TA= +25°C
TA= -40°C to +85°C

11 20

VCC= 2.7V

µA

24

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
(MAX985/MAX989/
MAX993 only)

VCC= 2.7V,
I

SOURCE

= 3.5mA

TA= -40°C to +85°C

V

2.3

2.4 2.55

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

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.) (Note 1)

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

VCC= 5.0V ns

80

t

RISE

OUT Rise Time
(MAX985/MAX989/
MAX993 only)

50

40

µs20t

PU

Power-Up Time

nsVCC= 5.0V

80

t

FALL

OUT Fall Time 50

40

300

450

100mV overdrive

100mV overdrive

CL= 15pF

300

t

PD+

Propagation Delay

450

ns

450

t

PD-

300

MAX985/MAX989/
MAX993 only

10mV overdrive
100mV overdrive

MAX985/MAX989/
MAX993 only, CL= 15pF

10mV overdrive

10mV overdrive

CL= 15pF
CL= 50pF
CL= 200pF
CL= 15pF
CL= 50pF
CL= 200pF

MAX986/MAX990/
MAX994 only,
R

PULL-UP

= 5.1kΩ

Note 1: The MAX98 _EUK specifications are 100% tested at TA= +25°C. Limits over the extended temperature range are guaran-

teed 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+).

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

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

4 _______________________________________________________________________________________

__________________________________________Typical Operating Characteristics

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

10,000

1

0.01 0.1 1 10 100

OUTPUT LOW VOLTAGE

vs. OUTPUT SINK CURRENT

MAX985-04

OUTPUT SINK CURRENT (mA)

OUTPUT LOW VOLTAGE (mV) (V

OL

)

10

100

1000

V

IN+

< V

IN-

VCC = 2.7V

V

CC

= 5.0V

600

350

0 200 1000

PROPAGATION DELAY

vs. CAPACITIVE LOAD (V

CC

= 3V)

500

450

400

550

MAX985-05a

CAPACITIVE LOAD (pF)

t

PD

(ns)

400

800600

VOD = 50mV

TO V

OUT

= 50% OF

FINAL VALUE

TO V

OUT

= 10% OF

FINAL VALUE

120

0

-60 100

OUTPUT SHORT-CIRCUIT

CURRENT vs. TEMPERATURE

20
10

90
80

110

100

MAX985-06

TEMPERATURE (°C)

OUTPUT SINK CURRENT (mA)

-40 -20 0 20 40 60 80

70
60
50
40
30

VCC = 5.0V

VCC = 2.7V

530

350

0 200 1000

PROPAGATION DELAY

vs. CAPACITIVE LOAD (V

CC

= 5V)

450
430
410
390
370

510
490
470

MAX985-05b

CAPACITIVE LOAD (pF)

t

PD

(ns)

400

800600

VOD = 50mV

TO V

OUT

= 50% OF

FINAL VALUE

TO V

OUT

= 10% OF

FINAL VALUE

1.1

-0.3

-60 100

INPUT OFFSET VOLTAGE

vs. TEMPERATURE

-0.1

0.7

0.9

MAX985-07

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

1 10 100

OUTPUT HIGH VOLTAGE

vs. OUTPUT SOURCE CURRENT

1

MAX985-08

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

18

8

-60 100

SUPPLY CURRENT

vs. TEMPERATURE

10

9

16

17

15

MAX985-01

TEMPERATURE (°C)

SUPPLY CURRENT (µA)

-40 -20 0 20 40 60 80

14
13
12
11

V

IN+

> V

IN-

VCC = 5.0V

VCC = 2.7V

1000

1

0.01 0.1 1 10 100 1000

SUPPLY CURRENT vs.

OUTPUT TRANSITION FREQUENCY

MAX985-02

OUTPUT TRANSITION FREQUENCY (kHz)

SUPPLY CURRENT (µA)

10

100

VCC = 5.0V

VCC = 2.7V