Aeroflex Circuit Technology

SCD4433D REV B 1/30/98 Plainview NY (516)694-6700

3

Absolute Maximum Ratings

Operating case temperature

-55°C to +125°C

Storage case temperature

-65°C to +150°C

Power supply voltage

-0.3 V to +18 V

+0.3 V to-18 V

-0.3 V to +7.0 V

Logic input voltage

-0.3 V to +5.5 V

Receiver differential input

Receiver input voltage (common mode)

±10 V

Driver peak output current

300 mA

Total package power dissipation over the full operating

case temperature rise

2.5 Watts

(Note: Normal operation conditions require one

transceiver on and the other off)

Maximum junction to case temperature

10°C

Thermal resistance – junction to case

4°C/W

Electrical Characteristics — Driver Section

Input Characteristics, TX DATA IN or TX DATA IN (Notes 2 & 3 apply)

Parameter

Condition

Symbol

Min

Typ

Max

Unit

"0" Input Current

-0.1

-0.2

mA

"1" Input Current

1

40

µA

"0" Input Voltage

0.7

V

"1" Input Voltage

2.0

V

Inhibit Characteristics

"0" Input Current

-0.1

-0.2

mA

"1" Input Current

1.0

40

µA

"0" Input Voltage

0.7

V

"1" Input Voltage

2.0

V

Delay from TX inhibit, (0¡1) to inhibited output

From mid pt

inhibit to

±1.2V pt B,

See Figure 5

175

225

nS

Delay from TX inhibit, (1¡0) to active output

90

150

nS

Differential output noise, inhibit mode

2

10

Differential output impedance (inhibited) Note 1

See Figure 5

Point B

2K

Ω

Point C

1K

Ω

Output Characteristics

Differential output level,

See Figure 5

Point A

6

7

9

Rise and fall times(10% to 90% at pt A output)

See Figure 5

Point A

100

160

300

nS

Output offset, Figure 3, 2.5µS after midpoint crossing

of the parity bit of the last word of a 660µS message

See Figure 5

Point A

± 90

mV peak

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

to zero crossing of differential signal. See Fig 5

Point A

100

200

nS