General Description

The MAX9691/MAX9692/MAX9693 are ultra-fast ECL

comparators capable of very short propagation delays.

Their design maintains the excellent DC matching char-

acteristics normally found only in slower comparators.

The MAX9691/MAX9692/MAX9693 have differential

inputs and complementary outputs that are fully com-

patible with ECL-logic levels. Output current levels are

capable of driving 50

Ω terminated transmission lines.

The ultra-fast operation makes signal processing possi-

ble at frequencies in excess of 600MHz.

The MAX9692/MAX9693 feature a latch-enable (LE)

function that allows the comparator to be used in a

sample-hold mode. When LE is ECL high, the compara-

tor functions normally. When LE is driven ECL low, the

outputs are forced to an unambiguous ECL-logic state,

dependent on the input conditions at the time of the

latch input transition. If the latch-enable function is not

used on either of the two comparators, the appropriate

LE input must be connected to ground; the companion

LE input must be connected to a high ECL logic level.

These devices are available in SO, QSOP, and tiny

________________________Applications

High-Speed Line Receivers

Peak Detectors

Threshold Detectors

High-Speed Triggers

Features

o 1.2ns Propagation Delay

o 100ps Propagation Delay Skew

o 150ps Dispersion

o 0.5ns Latch Setup Time

o 0.5ns Latch-Enable Pulse Width

o Available in µMAX and QSOP Packages

o +5V, -5.2V Power Supplies

Single/Dual, Ultra-Fast, ECL-Output

Comparators with Latch Enable

________________________________________________________________

Maxim Integrated Products

1

IN+

IN-

Q OUT

Q OUT

MAX9691

NONINVERTING

INPUT

RL

RL

INVERTING

INPUT

NONINVERTING

INPUT

INVERTING

INPUT

Q OUT

Q OUT

RL

RL

LATCH ENABLE

THE OUTPUTS ARE OPEN EMITTERS, REQUIRING EXTERNAL PULLDOWN

RESISTORS. THESE RESISTORS MAY BE IN THE RANGE OF 50

Ω TO 200Ω

CONNECTED TO -2.0V, OR 240

Ω TO 2000Ω CONNECTED TO -5.2V.

MAX9693

MAX9693

LE LE

LATCH ENABLE

LE LE

_________________________________________________________Functional Diagrams

19-1789; Rev 2; 1/12

Ordering Information

Ordering Information continued at the end of data sheet.

Pin Configurations appear at end of data sheet.

PART

TEMP

RANGE

PIN-PACKAGE

MAX9691EUA

-40

°C to +85°C

8 µMAX

MAX9691ESA

-40

°C to +85°C

8 SO

MAX9691EPA

-40

°C to +85°C

8 PDIP

Selector Guide

PART

COMPARATORS

PER PACKAGE

LATCH

ENABLE

PIN-

PACKAGE

MAX9691

1

No

8

µMAX,

8 SO, 8 PDIP

MAX9692

1

Yes

10

µMAX,

16 SO, 16 PDIP

MAX9693

2

Yes

16 QSOP,

16 SO, 16 PDIP

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Note: Devices are also available in lead(Pb)-free/RoHS-compli-

ant packages. Specify lead-free by adding a “+” after the part

number.

µMAX is a registered trademark of Maxim Integrated Products, Inc.