3

SCD4444 Rev B

ABSOLUTE MAXIMUM RATINGS

Operating Case Temperature

-40°C to +85°C

Storage Case Temperature

-65°C to +150°C

Power Supply Voltages

±16 V

+7 V

Logic Input Voltage

-0.3 V to +5.5 V

Receiver Differential Input

±40 V

Receiver Input Voltage (Common Mode)

±10V

Driver Peak Output Current

150 mA

Total Package Power Dissipation over the Full Operating Case

Temperature Range

*

3.25 Watts

Maximum Junction to Case Temperature

3.25°C

Junction-Case, Thermal Resistance

1°C/W

INPUT CHARACTERISTICS, TX DATA IN OR TX DATA IN

Parameter

Condition

Symbol

Min

Typ

Max

Unit

"0" Input Current

-

-0.2

-0.4

mA

"1" Input Current

-1.0

40

µA

"0" Input Voltage

-

--

0.7

V

"1" Input Voltage

-

2.0

-

-

V

INHIBIT CHARACTERISTICS

"0" Input Current

-

-0.2

-0.4

mA

"1" Input Current

-1.0

40

µA

"0" Input Voltage

-

--

0.7

V

"1" Input Voltage

-

2-

-

V

Delay from TX inhibit(0

→1) to inhibited output

-

-

300

500

nS

Delay from TX inhibit, (1

→0) to active output

-

-

300

500

nS

Differential output noise, inhibit mode

3/

-

0.8

10

mVp-p

Differential output impedance

*

4/

2K

-

-

Ω

OUTPUT CHARACTERISTICS

Differential output - Direct coupled stub

(See Figure 3 or 4)

Pt. B - B’

70

5/

26

29

32

Vp-p

Differential output offset - Direct coupled stub

Figure 3 or 4

-

-

±360

mVpk

Differential output rise / fall times (See Figure 5)

10% - 90%

200

250

300

nS

Delay from 50% point of TX DATA or TX DATA input

to zero crossing of differential output.

-

280

350

nS