Quad 7 ns

Single Supply Comparator

AD8564

Rev. B

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FEATURES

5 V single-supply operation

7 ns propagation delay

Low power

Separate input and output sections

TTL/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

PCMCIA cards

Upgrade for MAX901 designs

PIN CONFIGURATIONS

+IN A

GND

OUT A

+IN D

OUT D

–IN D

–IN A

+IN C

–IN C

OUT C

+IN B

–IN B

OUT B

116

89

AD8564

Figure 1. 16-Lead TSSOP

(RU-16)

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

Figure 2. 16-Lead Narrow Body SOIC

(R-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

+

–

+

–

+

–

Figure 3. 16-Lead PDIP

(N-16)

GENERAL DESCRIPTION

The AD8564 is a 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 maintaining 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 single comparator with

latch function, refer to the AD8561 data sheet.

The AD8564 is specified over the industrial temperature range

(−40°C to +125°C). The quad AD8564 is available in the 16-lead

TSSOP, 16-lead narrow body SOIC, and 16-lead plastic DIP

packages.