MC1488, SN55188, SN75188

QUADRUPLE LINE DRIVERS

SLLS094B – SEPTEMBER 1983 – REVISED MAY 1995

2

POST OFFICE BOX 655303

4Y

3Y

2Y

1Y

13

12

10

9

5

4

2

11

8

6

3

4B

4A

3B

3A

2B

2A

1A

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

and IEC Publication 617-12.

Pin numbers shown are for the D and N packages.

&

logic diagram (positive logic)

9

5

4

2

10

12

13

4Y

3Y

2Y

1Y

1A

2A

2B

3A

3B

4A

4B

11

8

6

3

Positive logic

Y = A (driver 1)

Y = AB or A + B (drivers 2 thru 4)

schematic (each driver)

Output

300

Ω

70

Ω

3.7 k

Ω

10 k

Ω

To Other Drivers

VCC –

Drivers

Other

To

GND

3.6 k

Ω

Input(s)

B

A

VCC +

70

Ω

6.2 k

Ω

8.2 k

Ω

Drivers

To Other

Resistor values shown are nominal.