©2004 Fairchild Semiconductor Corporation

www.fairchildsemi.com

FOD2200 Rev. 1.0.1

6

1

2

3

4

8

7

6

5

1

2

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6

5

Fig. 3. Test Circuit and Typical Waveforms for Common Mode Transient Immunity

50 V

OUTPUT

* SEE NOTE 6.

0 V

7

1

4

5

6

8

FOD2200

0.1

µF

BYPASS

MONITORING

NODE

2

3

A

B

–

+

PULSE GENERATOR

GND

FOD2200

DATA

INPUT

D1 (1N4150) REQUIRED FOR

ACTIVE PULL-UP DRIVER.

1.1k

Ω

GND

D1

TTL OR

LSTTL

Figure 4. Recommended LSTTL to LSTTL Circuit

Figure 6. Recommended LED Drive Circuit

Figure 5. LSTTL to CMOS Interface Circuit

Figure 7. Series LED Drive with Open Collector Gate

(4.7k

Ω Resistor Shunts IOH from the LED)

120pF

1

2

3

4

8

7

6

5

1

2

FOD2200

DATA

INPUT

TTL OR

LSTTL

(+5V)

UP TO 16

LSTTL

LOADS

OR 4 TTL

LOADS

1.1

k

Ω

(+5V)

DATA

OUTPUT

TOTEM

POLE

OUTPUT

GATE

GND

120pF (OPTIONAL*)

*The 120pF capacitor may be omitted in applications where 500ns propagation delay is sufficient.

FOD2200

DATA

INPUT

TTL OR

LSTTL

1.1

k

Ω

OPEN

COLLECTOR

GATE

GND

4.7k

Ω

120pF (OPTIONAL*)

1

2

FOD2200

DATA

INPUT

TTL OR

LSTTL

(4.5V TO 20V)

1.1

k

Ω

(+5V)

DATA

OUTPUT

TOTEM

POLE

OUTPUT

GATE

GND

CMOS

5V

10V

15V

20V

1.1k

Ω

2.37k

Ω

3.83k

Ω

5.11k

Ω

1

2

3

4

8

7

6

5