FOD250L datasheet(7/13 Pages) FAIRCHILD

Part #	FOD250L

Description	HIGH SPEED TRANSISTOR OPTOCOUPLERS

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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7 / 13 page

6/14/04

Page 7 of 13

LVTTL/LVCMOS 3.3V

HIGH SPEED TRANSISTOR

OPTOCOUPLERS

SINGLE-CHANNEL: FOD050L

FOD250L

DUAL-CHANNEL:

FOD053L

Pulse Gen

CM

V

FF

B

A

+-

+3.3 V

O

V

-

I

F

3

4

+

F

V

-

2

1

Shield

Noise

6

O

5

GND

7

8

V

B

V

CC

V

L

R

PLH

OL

V

VO

0

3.3 V

50%

F

I

T

PHL

T

Switch at A : I = 0 mA

F

Switch at A : I = 16 mA

F

tr

VO

O

V

OL

V

3.3 V

0 V

10%

90%

CM

V

1000 V

4

5

Noise

1

2

3

Shield

8

7

6

+3.3 V

O

V

VCC

V01

V02

GND

VF1

-

+

F2

V

-

F

I

+

10% DUTY CYCLE

I/f < 100

µS

F

I

MONITOR

L

R

C = 1.5 pF

L

Pulse

Generator

tr = 5ns

Z = 50

O

Ω

GND

+

4

5

1

3

2

-

F2

V

VF1

-

Shield

Noise

+3.3 V

CC

8

V

L

V

6

02

V

7

R

01

VO

V

CM

A

B

Pulse Gen

F

I

+-

+

3

I Monitor

F

4

I/f < 100

µs

10% D.C.

tr = 5ns

Generator

Pulse

Z = 50

O

+

V

F

I

Ω

F

-

2

1

Shield

Noise

V

O

6

5

GND

7

8

V

B

V

L

R

CC

V

+3.3 V

0.1

µF

L

C = 1.5 pF

0.1

µF

Test Circuit for FOD050L and FOD250L

Test Circuit for FOD053L

Test Circuit for FOD050L and FOD250L

Test Circuit for FOD053L

f

t

0.1

µF

0.1

µF

FF

V

m

R

m

R

90%

Fig. 11 Common Mode Immunity Test Circuit

Fig. 10 Switching Time Test Circuit

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