MAXIM MAX907, MAX908, MAX909 Technical data

Not Recommended for New Designs

The MAX909 was manufactured for Maxim by an outside wafer
foundry using a process that is no longer available. It is not
recommended for new designs. A Maxim replacement or an industry
second-source may be available. The data sheet remains available for
existing users. The other parts on the following data sheet are not

affected.

For further information, please see the QuickView data sheet for this
part or contact

technical support for assistance.

MAX907/MAX908/MAX909

Dual/Quad/Single, High-Speed, Ultra-Low-Power,

Single-Supply TTL Comparators

________________________________________________________________ Maxim Integrated Products 1

1

2

3

4

8

7

6

5

V+

OUTB

INB-

INB+

GND

INA+

INA-

OUTA

MAX907

DIP/SO

TOP VIEW

1

2

3

4

14

13

12

11

OUTD

IND-

IND+

GND

V+

INA+

INA-

OUTA

MAX908

DIP/SO

5

6

7

10

9

8

INC+

INC-

OUTC

OUTB

INB-

INB+

Pin Configurations

19-0129; Rev 7; 1/06

General Description

The MAX907/MAX908/MAX909 are dual/quad/single,
high-speed, ultra-low-power voltage comparators
designed for use in systems powered from a single
+5V supply; the MAX909 also accepts dual ±5V sup­plies. Their 40ns propagation delay (with 5mV input
overdrive) is achieved with a power consumption of
only 3.5mW per comparator. The wide input common­mode range extends from 200mV below ground (below
the negative supply rail for the MAX909) to within 1.5V
of the positive supply rail.

Because they are micropower, high-speed compara­tors that operate from a single +5V supply and include
built-in hysteresis, these devices replace a variety of
older comparators in a wide range of applications.

MAX907/MAX908/MAX909 outputs are TTL-compatible,
requiring no external pullup circuitry. All inputs and out­puts can be continuously shorted to either supply rail
without damage. These easy-to-use comparators incor­porate internal hysteresis to ensure clean output switch­ing even when the devices are driven by a slow-moving
input signal.

The MAX909 features complementary outputs and an
output latch. A separate supply pin for extending the
analog input range down to -5V is also provided.

The dual MAX907 and single MAX909 are available in
8-pin DIP and SO packages, and the quad MAX908 is
available in 14-pin DIP and SO packages. These com­parators are ideal for single +5V-supply applications
that require the combination of high speed, precision,
and ultra-low power dissipation.

Applications

Battery-Powered Systems

High-Speed A/D Converters

High-Speed V/F Converters

Line Receivers

Threshold Detectors/Discriminators

High-Speed Sampling Circuits

Zero-Crossing Detectors

Features

♦ 40ns Propagation Delay
♦ 700µA (3.5mW) Supply Current per Comparator
♦ Single 4.5V to 5.5V Supply Operation

(or ±5V, MAX909 only)

♦ Wide Input Range Includes Ground

(or -5V, MAX909 only)

♦ Low, 500µV Offset Voltage
♦ Internal Hysteresis Provides Clean Switching
♦ TTL-Compatible Outputs

(Complementary on MAX909)

♦ Input and Output Short-Circuit Protection
♦ Internal Latch (MAX909 only)

Ordering Information

Ordering Information continued at end of data sheet.

*Go to www.maxim-ic.com/PR-1

for details on high-reliability

plastic processing.

Pin Configurations continued at end of data sheet.

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.

PART

8SO

-40°C to +85°C

-40°C to +85°CMAX907ESA

8 Plastic DIPMAX907EPA

8SO0°C to +70°CMAX907CSA

8 Plastic DIP0°C to +70°C

MAX907CPA

PIN-PACKAGETEMP RANGE

8SO-55°C to +125°CMAX907MSA/PR*

MAX907/MAX908/MAX909

Dual/Quad/Single, High-Speed, Ultra-Low-Power,

Single-Supply TTL Comparators

2 _______________________________________________________________________________________

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

Negative Supply Voltage (V- to GND, MAX909 only) .........-7V

Differential Input Voltage

MAX907/MAX908 ..........................-0.3V to (V+ + 0.3V)

MAX909 ..............................(V- - 0.3V) to (V+ + 0.3V)

Common-Mode Input Voltage

MAX907/MAX908 ..........................-0.3V to (V+ + 0.3V)

MAX909 ..............................(V- - 0.3V) to (V+ + 0.3V)

Latch Input Voltage (MAX909 only) .........-0.3V to (V+ + 0.3V)

Input/Output Short-Circuit Duration to V+ or GND .. . Continuous

Continuous Power Dissipation (T

A

= +70°C)
8-Pin Plastic DIP (derate 9.09mW/°C above +70°C) . .. 727mW

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

14-Pin Plastic DIP (derate 10.00mW/°C above +70°C) . . . 800mW

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

Operating Temperature Ranges:

MAX90_C_ _ ......................................0°C to +70°C

MAX90_E_ _ ...................................-40°C to +85°C

MAX907MSA/PR ..............................-55°C to +125°C

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

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

ELECTRICAL CHARACTERISTICS

(V+ = 5V, TA= +25°C; MAX909 only: V- = 0V, V

LATCH

= 0V; unless otherwise noted.)

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.

ABSOLUTE MAXIMUM RATINGS

MAX909 only: V- = -5V

V

V

OUT

= 2.4V to 0.4V, CL= 10pF

V

OUT

= 0.4V to 2.4V, CL= 10pF

MAX907/MAX908

(Notes 3, 4)

MAX909

MAX909

MAX907/MAX908

MAX907/MAX908/MAX909

SYMBOL

ns6

t

f

Output Fall Time

ns12

t

r

Output Rise Time

610

mW

3.5 5.5

(Note 8)PD

Power Dissipation per
Comparator

µA60 100MAX909 only: V- = -5VI-Negative Supply Current

1.2 1.8

mA

0.7 1.0

(Note 7)I+

Positive Supply Current per
Comparator

0.4

I

SINK

= 8mA

0.36 0.475

I

SINK

= 3.2mA

V

OL

Output Low Voltage V

3.0 3.5

I

SOURCE

= 100µAV

OH

Output High Voltage

µV/V50 200(Notes 4, 6)PSRRPower-Supply Rejection Ratio

µV/V50 150(Notes 4, 5)CMRRCommon-Mode Rejection Ratio

-5.2 V+ - 1.5

V

-0.2 V+ - 1.5

V

CMR

Input Voltage Range

nA25 50

VCM= 0V, VIN= V

OS

I

OS

Input Offset Current

nA100 300

VCM= 0V, VIN= V

OS

I

B

Input Bias Current

mV0.5 2.0(Note 2)

V

OS

Input Offset Voltage

mV-2 -4(Note 1)

V

TRIP-

Negative Trip Point

mV24(Note 1)

V

TRIP+

Positive Trip Point

UNITSMIN TYP MAXCONDITIONSPARAMETER

MAX907/MAX908/MAX909

Dual/Quad/Single, High-Speed, Ultra-Low-Power,

Single-Supply TTL Comparators

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (continued)

(V+ = 5V, TA= +25°C; MAX909 only: V- = 0V, V

LATCH

= 0V; unless otherwise noted.)

PARAMETER

SYMBOL CONDITIONS MIN TYP MAX UNITS

Propagation Delay

t

PD+,tPD-

40 50 ns

Differential Propagation Delay

∆t

PD

1 ns

Propagation Delay Skew

tPDskew

2 ns

Latch Input Voltage High

V

IH

(Note 12) 2.0 V

Latch Input Voltage Low

V

IL

(Note 12) 0.8 V

Latch Input Current

IIH, I

IL

(Note 12) 20 µA

Latch Setup Time

t

s

(Note 12) 2 ns

Latch Hold Time

t

h

(Note 12) 2 ns

VIN= 100mV, VOD= 5mV
(Note 9)

VIN= 100mV, VOD= 5mV
(Note 10)

MAX909 only: VIN= 100mV,
V

OD

= 5mV (Note 11)

ELECTRICAL CHARACTERISTICS

(V+ = 5V, TA= T

MIN

to T

MAX

; MAX909 only: V- = 0V, V

LATCH

= 0V; unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Positive Trip Point

(Note 1) 2 5 mV

Negative Trip Point

(Note 1) -2 -5 mV

Input Offset Voltage V

OS

(Note 2) 1 3.5 mV

Input Bias Current I

B

V

CM

= 0V, V

IN

= V

OS

nA

Input Offset Current I

OS

V

CM

=

0V, V

IN

=

V

OS

50

nA

-0.2

C/E temp.
ranges
(Notes 3, 4)

MAX909 only, V- = -5V -5.2

Input Voltage Range

M temp. range
(Notes 3, 4)

MAX907MSA/PR -0.1

V

Common-Mode Rejection Ratio

(Notes 4, 5) 75

Power-Supply Rejection Ratio

(Notes 4, 6) 75

Output High Voltage V

OH

I

SOURCE

= 100µA 2.8 3.5 V

T

A

=

T

MAX

T

MIN

= 0°C

Output Low Voltage V

OL

I

SINK

= 3.2mA

T

MIN

= -40°C

V

MAX907/MAX908 0.8 1.2

Positive Supply Current per
Comparator

I+ (Note 7)

MAX909 1.2 2.0

mA

Negative Supply Current I- MAX909 only; V- = -5V

µV

MAX907/MAX908 4 7

Power Dissipation per
Comparator

PD (Note 8)

MAX909 6 11

V

TRIP+

V

TRIP-

V

CMR

CMRR

PSRR

MAX907/MAX908/MAX909

200 500

100

V+ - 1.5

V+ - 1.5

V+ - 1.5

300 µV/V

400 µV/V

0.45

0.525

0.550

100 200

mW