Rainbow Electronics MAX993 User Manual

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 voltages range 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.

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
MAX985/MAX989/MAX993 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 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 single­ended converters.

The single MAX985 is available in a chip-scale pack­age (UCSP™), significantly reducing the required PC
board area. The single MAX985/MAX986 are available
in 5-pin SC70 packages and the dual MAX989/MAX990
are available in 8-pin SOT23 packages.

____________________________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:

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

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

19-1229; Rev 3; 9/02

Ordering Information

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

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

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
Applications

IR Receivers
Digital Line Receivers

Applications

Selector Guide

UCSP is a trademark of Maxim Integrated Products, Inc.

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.

*UCSP reliability is integrally linked to the user’s assembly meth­ods, circuit board material, and environment. Refer to the UCSP
Reliability section of this data sheet for more information.

PART

MAX985 1 Push-Pull

MAX986 1 Open-Drain

MAX989 2 Push-Pull

MAX990 2 Open-Drain

MAX993 4 Push-Pull

MAX994 4 Open-Drain

COMPARATORS

PER PACKAGE

OUTPUT

STAGE

PART TEMP RANGE

MAX985EBT-T* -40°C to +85°C 6 UCSP-6 AAY

MAX985EXK-T -40°C to +85°C 5 SC70-5 ABK

TOP VIEW

(BUMPS ON BOTTOM)

IN+

B1

PIN/BUMP­PACKAGE

V

A1

EE

TOP

MARK

IN-

N.C.

B2

B3

MAX985

UCSP

OUT

A2

V

A3

CC

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
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 2)

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...........................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

6-Bump UCSP (derate 3.9mW/°C above +70°C)..........308mW

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

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

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

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

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

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

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

Bump Reflow Temperature (Note 1) ................................+235°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-V

CC

+

0.25 0.25

±3V

HYST

Input Hysteresis

Full common-mode
range

nAI

B

Input Bias Current
(Note 5)

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 4)

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 3)

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

Note 1: This device is constructed using a unique set of packaging techniques that impose a limit on the thermal profile the device

can be exposed to during board-level solder attach and rework. This limit permits only the use of the solder profiles recom­mended in the industry-standard specification, JEDEC 020A, paragraph 7.6, Table 3 for IR/VPR and Convection Packaging
Reflow. Preheating is required. Hand or wave soldering is not allowed.

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

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 2)

CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER

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

MAX986/MAX990/
MAX994 only,
R

PULLUP

= 5.1kΩ

Note 2: All device specifications are 100% production tested at TA= +25°C. Limits over the extended temperature range are guar-

anteed by design.

Note 3: Inferred from the V

OS

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

Note 4: V

OS

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

Note 5: I

B

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

CL= 15pF

CL= 50pF

CL= 200pF

VCC= 5.0V ns

80

t

RISE

OUT Rise Time
(MAX985/MAX989/
MAX993 only)

50

40

VCC= 5V,
I

SOURCE

= 8mA

V

4.6 4.85

V

OH

OUT Output Voltage High
(MAX985/MAX989/
MAX993 only)

TA= +25°C

4.45TA= -40°C to +85°C

VCC= 2.7V,
I

SOURCE

= 3.5mA

2.4 2.55TA= +25°C

2.3TA= -40°C to +85°C

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
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 (V

CC

- V

OH

)

(mV)

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

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 5

/

v

____________________________Typical Operating Characteristics (continued)

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

450

440

430

420

(ns)

PD

t

410

400

390

380

MAX985/MAX989/MAX993

PROPAGATION DELAY (t

IN+

OUT

VOD = 50mV

100ns/div

PROPAGATION DELAY

vs. TEMPERATURE

VOD = 50mV

TO V

= 50% POINT

OUT

OF FINAL VALUE

TO V

= 10% POINT

OUT

OF FINAL VALUE

-40 100

-200 20406080
TEMPERATURE (°C)

)

PD+

MAX985-11

50mV/
div

2V/div

IN+

OUT

MAX985-09

PROPAGATION DELAY (t

VOD = 50mV

100ns/div

PD-

PROPAGATION DELAY

vs. INPUT OVERDRIVE

900

800

700

600

500

(ns)

PD

t

400

300

200

100

0

0 80 120 160 200

)

MAX985-12

50mV
div

2V/di

VCC = 2.7V

VCC = 5.0V

40

INPUT OVERDRIVE (mV)

MAX985/MAX989/MAX993

SWITCHING CURRENT, OUT RISING

IN+

OUT

I

CC

VOD = 50mV

MAX985-10

MAX985-13

100ns/div

50mV/
div

2V/div

1mA/div

SWITCHING CURRENT, OUT FALLING

IN+

OUT

I

CC

VOD = 50mV

100ns/div

MAX985-14

IN+

50mV/
div

2V/div

OUT

1mA/div

1MHz RESPONSE

VOD = 50mV

200ns/div

MAX985-15

50mV/
div

2V/div

V

OUT

CC

POWER-UP DELAY

5µs/div

V
V

IN­IN+

MAX985-16

= 50mV
= 0V

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators

6 _______________________________________________________________________________________

Pin Description

——B3— 1, 5, 8 No Connection. Not internally connected.

13

14

12

10

—

—

—

—

—

—

—

—

8

9

7

—

2

5

6

3

1

4

—

11

—

—

—

Comparator D Inverting Input

—

—

7

—

2

5

6

3

1

8

—

4

—

—

—

Comparator D Output

—

—

—

—

—

—

—

—

—

A3

B2

A1

B1

—

A2

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/µMAX/

SOT23

MAX989
MAX990

MAX985
MAX986

UCSP*

SOT23/

SC70

SO

SO/

TSSOP

FUNCTION

PIN

NAME

N.C.

IND-

OUTD

IND+

INC+

OUTC

INC-

OUTB

INA-

INB+

INB-

INA+

OUTA

V

CC

IN-

V

EE

IN+

OUT

MAX993
MAX994

*MAX985 only

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 7

_______________Detailed Description

The MAX985/MAX986/MAX989/MAX990/MAX993/
MAX994 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 11µA.
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-to-rail 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 MAX985/MAX989/MAX993 have a
push-pull output structure that sinks as well as sources
current. The MAX986/MAX990/MAX994 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
graph Supply Current vs. Output Transition Frequency
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. Another advantage realized in high­speed, battery-powered applications is a substantial
increase in battery life.

__________Applications Information

Additional Hysteresis

MAX985/MAX989/MAX993

The MAX985/MAX989/MAX993 have ±3mV 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 MAX985/MAX989/MAX993.

1) Select R3. Leakage current at IN is under 10nA, so
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 in
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 (VHB/ 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 VINfalling). This is the threshold
voltage at which the comparator switches its output
from low to high as VINrises above the trip point. For
this example, choose 3V.

Figure 1. Additional Hysteresis (MAX985/MAX989/MAX993)

V

CC

R3

V

R1

IN

R2

V

REF

V

CC

OUT

V

EE

MAX985
MAX989
MAX993

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators

8 _______________________________________________________________________________________

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

8.2kΩ standard value:

6) Verify trip voltages and hysteresis as follows:

MAX986/MAX990/MAX994

The MAX986/MAX990/MAX994 have ±3mV 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
MAX985/MAX989/MAX993.

Use the following procedure to calculate resistor
values:

1) Select R3 according to the formulas R3 = V

REF

/

500µA or R3 = (V

REF

- VCC) / 500µA - 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:

Board Layout and Bypassing

Power-supply bypass capacitors are not typically need­ed, but use 100nF bypass capacitors when supply
impedance is high, when supply leads are long,
or when excessive noise is expected on the supply
lines. Minimize signal trace lengths to reduce stray
capacitance.

Figure 2. Additional Hysteresis (MAX986/MAX990/MAX994)

R2 =

R2 =



V

THR



V



REF



3.0V



1.2 x 12k



1



1

−−



xR R R

1



1

1

3

1




ΩΩ Ω



1

−−

kM

12

.

22

1

.

803

=

k

Ω

V rising: V = V x R1 x

IN THR REF

V falling

IN

Hysteresis V V

:

=−

VV

THF THR

=−

THR THF








1



R1



1

RxV

CC

3

R

1

++

2

RR








1



3



V

CC

R3

R2 =



V

THR



V



REF

1



1

−−



1



1

xR R R R1

34

+

V rising: V = V x R1 x

IN THR REF

V falling

IN

Hysteresis V V




R1



:

VV

=−

1

1

++

2

RRR

=−

THF THR

THR THF

34



1



+





1

RxV




CC

+

34

RR






R1

V

IN

R2

V

REF

V

V

CC

EE

OUT

MAX986
MAX990
MAX994

R4

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

_______________________________________________________________________________________ 9

Zero-Crossing Detector

Figure 3 shows a zero-crossing detector application.
The MAX985’s inverting input is connected to ground,
and its noninverting input is connected to a 100mV

P-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 MAX986 is powered by the 5V
supply voltage, and the pullup resistor for the MAX986’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.

UCSP Package Consideration

For general UCSP package information and PC layout
considerations, please refer to Maxim Application
Note,“Wafer-Level Chip-Scale Package.”

UCSP Reliability

The chip-scale package (UCSP) represents a unique
packaging form factor that may not perform equally to a
packaged product through traditional mechanical relia­bility tests. UCSP reliability is integrally linked to the
user’s assembly methods, circuit board material, and
usage environment. The user should closely review
these areas when considering use of a UCSP package.
Performance through Operating Life Test and Moisture
Resistance remains uncompromised as it is primarily
determined by the wafer-fabrication process.

Mechanical stress performance is a greater consideration
for a UCSP package. UCSPs are attached through direct
solder contact to the user’s PC board, foregoing the
inherent stress relief of a packaged product lead frame.
Solder joint contact integrity must be considered.
Information on Maxim’s qualification plan, test data, and
recommendations are detailed in the UCSP application
note, which can be found on Maxim’s website at

www.maxim-ic.com.

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

V

CC

2

V

V

CC

EE

MAX985

5

OUT

1

100mV

4

IN+

3

IN-

5V (3V)

3V (5V)

100kΩ

4

100kΩ

3

5V (3V) LOGIC IN

IN-

IN+

V

CC

V

2

MAX986

EE

5

OUT

R

PULLUP

3V (5V)

1

LOGIC OUT

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators

10 ______________________________________________________________________________________

Ordering Information (continued)Typical Application Circuit

Pin Configurations (continued)

V

CC

V

IN

V

CC

IN+

OUT

IN-

*R

PULLUP

MAX98_
MAX99_

V

EE

V

REF

*MAX986/MAX990/MAX994 ONLY.

THRESHOLD DETECTOR

PART TEMP RANGE

MAX985EUK-T -40°C to +85°C 5 SOT23-5 ABYZ

MAX985ESA -40°C to +85°C 8 SO —

MAX986EXK-T -40°C to +85°C 5 SC70-5 ABL

MAX986EUK-T -40°C to +85°C 5 SOT23-5 ABZA

MAX986ESA -40°C to +85°C 8 SO —

MAX989EKA-T -40°C to +85°C 8 SOT23-8 AADZ

MAX989EUA -40°C to +85°C 8 µMAX —

MAX989ESA -40°C to +85°C 8 SO —

MAX990EKA-T -40°C to +85°C 8 SOT23-8 AAEA

MAX990EUA -40°C to +85°C 8 µMAX —

MAX990ESA -40°C to +85°C 8 SO —

MAX993EUD -40°C to +85°C 14 TSSOP —

MAX993ESD -40°C to +85°C 14 SO —

MAX994EUD -40°C to +85°C 14 TSSOP —

MAX994ESD -40°C to +85°C 14 SO —

PIN/BUMP­PACKAGE

TOP

MARK

TOP VIEW

OUT

V

IN+

CC

1

MAX985

2

MAX986

3

SOT23/SC70

5

V

EE

IN-

4

N.C.

1

2

IN-

IN+

V

EE

MAX985
MAX986

3

4

SO

87N.C.

6

5

V

OUT

N.C.

OUTA

1

INA-

INA+

2

MAX989
MAX990

3

V

4

EE

CC

87V

6

5

SO/µMAX/SOT23

CC

OUTB

INB-

INB+

OUTA

INA-

INA+

V

INB+

INB-

2

3

4

CC

MAX993
MAX994

5

6

7

1

14

OUTD

13

IND-

12

IND+

11

V

EE

10

INC+

9

INC-

8

OUTCOUTB

SO/TSSOP

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

______________________________________________________________________________________ 11

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.)

SOT5L.EPS

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,
Rail-to-Rail I/O Comparators

12 ______________________________________________________________________________________

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.)

6L, UCSP.EPS

MAX985/MAX986/MAX989/MAX990/MAX993/MAX994

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

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 [phone]___________________ 13

© 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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.)

0.6±0.1

0.6±0.1

A2

8

ÿ 0.50±0.1

1

D

TOP VIEW

e

FRONT VIEW

b

E H

A1

4X S

BOTTOM VIEW

A

c

L

SIDE VIEW

8

1

DIM

A
A1
A2
b

c
D
e

E

H

L

α

S

INCHES

MIN

-

0.002

0.030

0.010

0.005

0.116

0.0256 BSC

0.116

0.188

0.016
0∞

0.0207 BSC

MAX

0.043

0.006

0.037

0.014

0.007

0.120

0.120

0.198

0.026
6∞

MILLIMETERS

MAX

MIN

- 1.10

0.05 0.15

0.950.75

0.25 0.36

0.13 0.18

2.95 3.05

0.65 BSC

2.95 3.05

4.78

5.03

0.41

0.66

0.5250 BSC

8LUMAXD.EPS

6∞0∞

α

PROPRIETARY INFORMATION

TITLE:

PACKAGE OUTLINE, 8L uMAX/uSOP

REV.DOCUMENT CONTROL NO.APPROVAL

21-0036

1

J

1