NE521 datasheet(2/8 Pages) PHILIPS

2 / 8 page

Philips Semiconductors

Product data

NE521

High-speed dual-differential comparator/sense amp

2001 Aug 03

853-0900 26834

FEATURES

• 12 ns maximum guaranteed propagation delay

• 20 µA maximum input bias current

• TTL compatible strobes and outputs

• Large common-mode input voltage range

• Operates from standard supply voltages

APPLICATIONS

• MOS memory sense amp

• A-to-D conversion

• High-speed line receiver

PIN CONFIGURATION

D, N Packages

INPUT 1A

INPUT 1B

OUTPUT 1Y

STROBE 1G

STROBE S

GND

V+

V–

INPUT 2A

INPUT 2B

OUTPUT 2Y

STROBE 2G

TOP VIEW

SL00242

Figure 1. Pin Configuration

ORDERING INFORMATION

DESCRIPTION

TEMPERATURE RANGE

ORDER CODE

DWG #

14-Pin Plastic Dual In-Line Package (DIP)

°C to +70 °C

NE521N

SOT27-1

14-Pin SO Package

°C to +70 °C

NE521D

SOT108-1

EQUIVALENT SCHEMATIC

Q11

V+

–

V–

Q10

R17

R16

Q13

R15

Q19

R14

Q25

R20

R21

Q26

Q30

R24

R23

Q27

Q29

Q28

R25

–

V+

Q16

Q15

Q14

R12

R11

Q18

R10

Q17

Q20

Q21

Q22

Q23

R18

R19

Q24

Q31

R26

Q32

R27

R28

Q36

R29

R30

Q32

Q35

Q34

R34

R22

SL00243

Figure 2. Equivalent Schematic

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