Single/Dual/Quad, SOT23, Single-Supply,

High-Speed, Low-Power Comparators

_______________________________________________________________________________________

5

MAX978

3

3

MAX976

IN_+

2

4

IN_-

Comparator Inverting Input

2, 4, 6, 8

2, 4

4

2

GND

6

1

OUT_

Comparator Output

10, 11,

14, 15

6, 7

NAME

Ground

9, 13

5

Comparator Noninverting Input

1, 3, 5, 7

1, 3

7

6

Supply Voltage, +2.7V to +5.5V

12, 16

8

1, 5

—

N.C.

8

5

SHDN

Shutdown Input. Drive low for shutdown mode. Drive high or con-

—

—

No Connection. Not internally connected.

—

—

FUNCTION

MAX998

PIN

SOT23-6

SO

SO/µMAX

SO/QSOP

______________________________________________________________Pin Description

__________________Detailed Description

The MAX976/MAX978/MAX998 dual/quad/single com-

parators operate from a single +2.7V to +5.5V supply.

They achieve a 20ns propagation delay while consum-

ing only 225µA of supply current per comparator. The

MAX998 features a low-power shutdown mode that

places the output in a high-impedance state and

reduces supply current to 1nA. Activate shutdown

mode by driving SHDN low.

The MAX976/MAX978/MAX998 comparator inputs have

Either input can be driven to the Absolute Maximum

Ratings limit without false output inversion, as long as

the other input is within the Common-Mode Voltage

Range. Their push/pull output structure is capable of

rail-to-rail operation without external pull-up circuitry,

making these devices ideal for interfacing with

CMOS/TTL logic. All inputs and outputs can tolerate a

continuous short-circuit fault condition to either supply.

The comparator’s internal hysteresis ensures clean out-

put switching, even with slow-moving input signals.

______________________________Typical Operating Characteristics (continued)

SHDN

2V/div

200ns/div

SHUTDOWN DELAY TIME

2V/div

MAX976 TOC16

SHDN

2V/div

5

μs/div

WAKE-UP FROM SHUTDOWN

2V/div

MAX976 TOC17