NE521N Datasheet NE521DR2G, NE521DG, NE521N | P1-P3

October, 2006 − Rev. 4

1 Publication Order Number:

NE521/D

NE521

High−Speed

Dual−Differential

Comparator/Sense Amp

Features

• TTL-Compatible Strobes and Outputs

• Large Common-Mode Input Voltage Range

• Operates from Standard Supply Voltages

• Pb−Free Packages are Available

Applications

• MOS Memory Sense Amp

• A-to-D Conversion

• High-Speed Line Receiver

MAXIMUM RATINGS

Rating Symbol Value Unit

Supply Voltage

Positive

Negative

V+

V−

+7.0

−7.0

V

Differential Input Voltage V

IDR

"6.0 V

Input Voltage

Common Mode

Strobe/Gate

V

IN

"5.0

+5.25

V

Maximum Power Dissipation (Note 1)

T

A

= 25°C (Still−Air)

N Package

D Package

P

D

1420

1040

mW

Thermal Resistance, Junction−to−Ambient

N Package

D Package

R

q

JA

100

145

°C/W

Operating Temperature Range T

A

0 to 70 °C

Storage Temperature Range T

stg

−65 to +150 °C

Operating Junction Temperature T

J

150 °C

Lead Soldering Temperature (10 sec max) T

sld

+230 °C

Stresses exceeding Maximum Ratings may damage the device. Maximum

Ratings are stress ratings only. Functional operation above the Recommended

Operating Conditions is not implied. Extended exposure to stresses above the

Recommended Operating Conditions may affect device reliability.

1. Derate above 25°C at the following rates:

N package at 10 mW/°C

D package at 6.9 mW/°C.

http://onsemi.com

See detailed ordering and shipping information in the package

dimensions section on page 5 of this data sheet.

ORDERING INFORMATION

PIN CONNECTIONS

SOIC−14

D SUFFIX

CASE 751A

INPUT 1A

INPUT 1B

NC

V+

V−

INPUT 2A

INPUT 2B

OUTPUT 1Y

STROBE 1G

GROUND

NC

OUTPUT 2Y

STROBE 2G

D, N Packages

STROBE S

1

2

3

4

5

6

7

14

13

12

11

10

9

8

(Top View)

1

PDIP−14

N SUFFIX

CASE 646

1

NE521G

AWLYWW

1

MARKING

DIAGRAMS

NE521N

AWLYYWWG

A = Assembly Location

WL = Wafer Lot

Y, YY = Year

WW = Work Week

G = Pb−Free Package

1

14

NE521

http://onsemi.com

2

LOGIC FUNCTION TABLE

V

ID

(A

+

, B) Strobe S Strobe G Output (Y)

V

ID

v −V

OS

H H L

−V

OS

< V

ID

< V

OS

H H Undefined

V

ID

w V

OS

H H H

X L X H

X X L H

Figure 1. Block Diagram

(12)

INPUT 2A

(11)

INPUT 2B

(9)

OUTPUT 3Y

(8)

STROBE 2G

(1)

(2)

(4)

(5)

INPUT 1A

INPUT 1B

OUTPUT 1Y

STROBE 1G

(6)

STROBE S

Q11

V+

14

2

−

+

1

V−

13

R2 R1

Q2 Q1

Q4

Q3

D7

Q9

R4

Q10 Q8

R5 R3

D6

R17

Q6

R16

Q5

Q13

R15 R6

R9

Q19

Q7

R14

5

D2

Q25

R20

6

R21

Q26

Q30

R24

R23

Q27

Q29

Q28

R25

7

12

+

−

11

V+

R8

Q16

Q15 Q14

R12 R11

Q18

R10

Q17

D4

Q20

Q21

R7

D5

Q22 Q23

R18

R19

D3

8

Q24

Q31

R26

Q32

R27

R28

Q36

R29

R30

Q32

Q35

9

Q34

R34

R22

4

Figure 2. Equivalent Schematic

D1

NE521

http://onsemi.com

3

DC ELECTRICAL CHARACTERISTICS (V+ = +5.0 V; V− = −5.0 V, T

A

= 0°C to +70°C, unless otherwise noted.)

Characteristic Test Conditions

Symbol

Limits

Unit

Min Typ Max

Input Offset Voltage

At 25°C

Overtemperature Range

V+ = +4.75 V; V− = −4.75 V V

OS

−

6.0

−

7.5

10

mV

Input Bias Current

At 25°C

Overtemperature Range

V+ = +5.25 V; V− = −5.25 V I

BIAS

−

7.5

−

20

40

mA

Input Offset Current

At 25°C

Overtemperature Range

V+ = +5.25 V; V− = −5.25 V I

OS

−

1.0

−

5.0

12

mA

Common-Mode Voltage Range V+ = +4.75 V; V− = −4.75 V V

CM

−3.0 − +3.0 V

Input Current

High

V+ = +5.25 V; V− = −5.25 V

V

IH

= 2.7 V

1G or 2G Strobe

Common Strobe S

I

IH

−

50

100

mA

Input Current

Low

V

IL

= 0.5 V

1G or 2G Strobe

Common Strobe S

I

IL

−

−2.0

−4.0

mA

Output Voltage

High

Low

V

I(S)

= 2.0 V

V+ = +4.75 V; V− = −4.75 V;

I

LOAD

= −1.0 mA

V+ = +5.25 V; V− = −5.25 V;

I

LOAD

= 20 mA

V

OH

V

OL

2.7 3.4

0.5

V

Supply Voltage

Positive

Negative

−

V+

V−

4.75

−4.75

5.0

−5.0

5.25

−5.25

V

Supply Current

Positive

Negative

V+ = +5.25 V; V− = −5.25 V;

T

A

= 25°C I

CC+

I

CC−

−

27

−15

35

−28

mA

Short−Circuit Output Current − I

SC

−40 − −100 mA

AC ELECTRICAL CHARACTERISTICS (T

A

= 25°C; R

L

= 280 W; C

L

= 15 pF, V+ = 5.0 V; V− = 5.0 V, guaranteed by characterization)

Characteristic From Input To Output Symbol

Limits

Unit

Min Typ Max

Large−Signal Switching Speed

Propagation Delay

Low to High (Note 2)

High to Low (Note 2)

Low to High (Note 3)

High to Low (Note 3)

Amp

Strobe

Output

t

PLH(D)

t

PHL(D)

t

PLH(S)

t

PHL(S)

−

9.6

8.2

4.8

3.9

12

9.0

10

6.0

ns

Max. Operating Frequency − − f

MAX

40 55 − MHz

2. Response time measured from 0 V point of "100 mV

P-P

10 MHz square wave to the 1.5 V point of the output.

3. Response time measured from 1.5 V point of input to 1.5 V point of the output.

NE521N

NE521N

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