SN75446, SN75447

DUAL PERIPHERAL DRIVERS

SLRS020A − DECEMBER 1978 − REVISED NOVEMBER 1995

3−2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

logic diagrams (positive logic)

† This symbol is in accordance with ANSI/IEEE Std 91-1984

and IEC publication 617-12.

CLAMP

2A

S

1A

7

1

2

GND

CLAMP

2Y

1Y

4

5

6

3

CLAMP

CLAMP

2Y

1Y

7

1

2

2A

S

1A

5

6

3

&

&

SN75446

SN75446

Positive Logic: Y = AS or A+S

SN75447

SN75447

Positive Logic: Y = AS or A+S

2A

S

1A

7

1

2

5

6

3

CLAMP

2Y

1Y

2A

S

1A

7

1

2

4

5

6

3

GND

CLAMP

2Y

1Y

7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5.5 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

400 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output clamp-diode current

400 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Continuous total power dissipation

See Dissipation Rating Table

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

0

°C to 70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. Voltage values are with respect to network GND.

2. Both halves of this dual circuit may conduct rated current simultaneously; however, power dissipation averaged over a short time

interval must fall within the continuous dissipation ratings.

DISSIPATION RATING TABLE

PACKAGE

TA ≤ 25°C

DERATING FACTOR

TA = 70°C

PACKAGE

TA ≤ 25 C

POWER RATING

DERATING FACTOR

ABOVE TA = 25°C

TA = 70 C

POWER RATING

D

725 mW

5.8 mW/

°C

464 mW

P

1000 mW

8.0 mW/

°C

640 mW