SN75LBC786

QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK

SLLS184 – NOVEMBER 1994

2

POST OFFICE BOX 655303

logic diagram (positive logic) (each transceiver)

–

+

Driver

Receiver

A

LB

Z

Y

C

B

14 V

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

– 14 V

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

Receiver input voltage range

– 30 V to 30 V

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

Driver input voltage range

– 0.5 V to 5.75 V

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

Loopback 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

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

800 mW

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

0

°C to 70°C

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

–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.

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

High-level input voltage, VIH

Driver and loopback

2

V

Low-level input voltage, VIL

Driver and loopback

0.8

V

High-level output current, IOH

Receiver

–4

mA

Low-level output current, IOL

Receiver

4

mA

Slew rate control resistor, RWS

20

82

820

k

Ω

Operating free-air temperature, TA

0

70

°C