REV. A

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a

AD8564

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781/329-4700

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© Analog Devices, Inc., 1999

Quad 7 ns

Single Supply Comparator

PIN CONFIGURATIONS

FEATURES

+5 V Single-Supply Operation

7 ns Propagation Delay

Low Power

Separate Input and Output Sections

TTL and CMOS Logic Compatible Outputs

Wide Output Swing

TSSOP, SOIC and PDIP Packages

APPLICATIONS

High Speed Timing

Line Receivers

Data Communications

High Speed V-to-F Converters

Battery Operated Instrumentation

High Speed Sampling Systems

Window Comparators

Read Channel Detection

PCMCIA Cards

Upgrade for MAX901 Designs

GENERAL DESCRIPTION

The AD8564 is quad 7 ns comparator with separate input and

output supplies, thus enabling the input stage to be operated

from

±5 V dual supplies or a +5 V single supply while maintain-

ing a CMOS/TTL-compatible output.

Fast 7 ns propagation delay makes the AD8564 a good choice

for timing circuits and line receivers. Independent analog and

digital supplies provide excellent protection from supply pin

interaction. The AD8564 is pin compatible with the MAX901,

and has lower supply currents.

All four comparators have similar propagation delays. The

propagation delay for rising and falling signals is similar, and

tracks over temperature and voltage. These characteristics

make the AD8564 a good choice for high speed timing and data

communications circuits. For a similar dual comparator with a

latch function, please see the AD8598 data sheet. For a similar

single comparator with latch function, please see the AD8561

data sheet.

The AD8564 is specified over the industrial (–40

°C to +85°C)

temperature range. The quad AD8564 is available in the 16-

lead plastic DIP, narrow SO-16 surface mount, and 16-lead

TSSOP packages.

16-Lead Narrow Body SO

(S Suffix)

R-16A

16-Lead TSSOP

(RU-Suffix)

RU-16

16-Lead Epoxy DIP

(P Suffix)

N-16

14

13

12

11

16

15

10

9

8

1

2

3

4

7

6

5

–IN A

OUT D

+IN D

–IN D

+IN A

GND

OUT A

+IN C

OUT C

OUT B

+IN B

–IN B

–IN C

+

–

+–

+–

+–

AD8564

–IN A

+IN A

GND

OUT A

OUT B

+IN B

–IN B

–IN D

+IN D

OUT D

OUT C

+IN C

–IN C

AD8564

+IN A

GND

OUT A

+IN D

OUT D

–IN D

1

89

16

AD8564

–IN A

+IN C

–IN C

OUT C

+IN B

–IN B

OUT B