SN75ALS170, SN75ALS170A

TRIPLE DIFFERENTIAL BUS TRANSCEIVER

SLLS055D – AUGUST 1987 – REVISED SEPTEMBER 1995

3

POST OFFICE BOX 655303

schematics of inputs and outputs

EQUIVALENT OF EACH INPUT

Driver Input: R(eq) = 12 kΩ NOM

Enable Inputs: R(eq) = 8 kΩ NOM

R(eq) = equivalent resistor

TYPICAL OF A AND B I/O PORTS

TYPICAL OF RECEIVER OUTPUT

85

Ω

NOM

Output

VCC

1.1 k

Ω

NOM

3 k

Ω

NOM

A or B

18 k

Ω

NOM

180 k

Ω

NOM

Connected

on A Port

VCC

R(eq)

VCC

Input

180 k

Ω

NOM

Connected

on B Port

7 V

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

Voltage range at any bus terminal

– 7 V to 12 V

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

5.5 V

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

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: DW package

260

°C

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

Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: J package

300

°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 voltage values, except differential I/O bus voltage, are with respect to network ground terminal.

DISSIPATION RATING TABLE

PACKAGE

TA ≤ 25°C

DERATING FACTOR

TA = 70°C

PACKAGE

A

POWER RATING

ABOVE TA = 25°C

A

POWER RATING

DW

1125 mW

9.0 mW/

°C

720 mW

J

1025 mW

8.2 mW/

°C

656 mW