Single/Dual/Quad 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

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19-0129; Rev. 3; 7/94

_______________General Description

The MAX907/MAX908/MAX909 dual, quad, and single

high-speed, ultra low-power voltage comparators are

designed for use in systems powered from a single

+5V supply; the MAX909 also accepts dual ±5V sup-

plies. Their 40ns propagation delay (with 5mV input

overdrive) is achieved with a power consumption of

only 3.5mW per comparator. The wide input common-

mode 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 compara-

tors 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 compati-

ble, requiring no external pull-up circuitry. All inputs

and outputs can be continuously shorted to either sup-

ply rail without damage. These easy-to-use compara-

tors incorporate internal hysteresis to ensure clean out-

put 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 small-outline packages, and the quad

MAX908 is available in 14-pin DIP and small-outline

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

o 40ns Propagation Delay

o 700µA (3.5mW) Supply Current per Comparator

o Single 4.5V to 5.5V Supply Operation

(or ±5V, MAX909 only)

o Wide Input Range Includes Ground

(or -5V, MAX909 only)

o Low, 500µV Offset Voltage

o Internal Hysteresis Provides Clean Switching

o TTL-Compatible Outputs

(Complementary on MAX909)

o Input and Output Short-Circuit Protection

o Internal Latch (MAX909 only)

______________Ordering Information

PART

TEMP. RANGE

PIN-PACKAGE

MAX907CPA

0°C to +70°C

8 Plastic DIP

MAX907CSA

0°C to +70°C

8 SO

MAX907C/D

0°C to +70°C

Dice*

MAX907EPA

-40°C to +85°C

8 Plastic DIP

MAX907ESA

-40°C to +85°C

8 SO

MAX907MJA

-55°C to +125°C

8 CERDIP

Ordering Information continued on last page.

* Dice are specified at +25°C, DC parameters only.

Pin Configurations continued on last page.