SN75LBC784

QUADRUPLE RS-423-B DRIVER/RECEIVER

SLLS187A – NOVEMBER 1994 – REVISED AUGUST 1995

2

POST OFFICE BOX 655303

logic diagram (positive logic)

_

+

12

1

2

11

13

3Y

3B

3C

3A

3Z

10

4

4Y

4A

20

23

1Y

1A

18

26

2Y

2A

_

+

5

9

14

4B

4C

4Z

_

+

27

19

15

1B

1C

1Z

_

+

24

17

16

2B

2C

2Z

14 V

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

– 14 V

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

5.75 V

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

Receiver input voltage range

– 30 V to 30 V

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

Driver input voltage range

– 0.5 V to 5.75 V

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

Driver output voltage range (supplies at 0 V)

– 30 V to 30 V

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

Driver output voltage range (supplies at

±12 V)

– 25 V to 25 V

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

Continuous power dissipation

See Dissipation Rating Table

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

0

°C to 70°C

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

Storage temperature range

–65

°C to 150°C

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

Case temperature 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.

NOTE 1: All voltages are with respect to network ground terminal.

DISSIPATION RATING TABLE

PACKAGE

TA ≤ 25°C

POWER RATING

DERATING FACTOR†

ABOVE TA = 25°C

TA = 70°C

POWER RATING

DW

1348 mW

10.8 mW/

°C

862 mW

† Derating factors are the inverse of the junction-to-ambient thermal resistance when

board-mounted with no air flow.

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VDD

10.8

12

13.2

V

Supply voltage, VSS

– 10.8

–12

– 13.2

V

Bias voltage, Vbias

2

5

5.5

V

High-level input voltage, VIH

Driver

2

V

Low-level input voltage, VIL

Driver

0.8

V

High-level output current, IOH

Receiver

–4

mA

Low-level output current, IOL

Receiver

4

mA

Rws slew rate control resistor

20

82

820

k

Ω

Operating free-air temperature, TA

0

70

°C