SN75177B, SN75178B

DIFFERENTIAL BUS REPEATERS

SLLS002C – D2606, JULY 1985 – REVISED FEBRUARY 1993

POST OFFICE BOX 655303

2–3

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)

7 V

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

Voltage range at any bus terminal

– 10 V to 15 V

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

Differential input voltage (see Note 2)

±25 V

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

Enable input voltage

5.5 V

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

Continuous total dissipation

See Dissipation Rating Table

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

Operating free-air temperature range

0

°C to 70°C

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

Storage temperature range

– 65

°C to 150°C

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

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

260

°C

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

NOTES: 1. All voltage values, except differential input voltage, are with respect to network ground terminal.

2. Differential input voltage is measured at the noninverting input with respect to the corresponding inverting input.

DISSIPATION RATING TABLE

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

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC

4.75

5

5.25

V

High-level input voltage, VIH

EN or EN

2

V

low-level input voltage, VIL

EN or EN

0.8

V

Common-mode input voltage, VIC

–7†

12

V

Differential input voltage, VID

±12

V

High level output current IOH

Driver

–60

mA

High-level output current, IOH

Receiver

– 400

µA

Low level output current IOL

Driver

60

mA

Low-level output current, IOL

Receiver

8

mA

Operating free-air temperature, TA

0

70

°C

† The algebraic convention, where the less-positive (more-negative) limit is designated minimum, is used in this data sheet for common-mode input

voltage and threshold voltage.