Aeroflex Circuit Technology

SCD4454 REV A 3/17/99 Plainview NY (516) 694-6700

3

Note 1. Power on or off, measured from 75KHz to 1MHz at point A-A' and transformer self impedance of 3K

Ω

minimum

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 +7.0 V

Logic input voltage

-0.3 V to +5.5 V

Receiver differential input

±10 V

Receiver input voltage (common mode)

±5 V

Driver peak output current

800 mA

Total package power dissipation over the full operating

case temperature rise

2 Watts

Maximum junction to case temperature

10°C

Thermal resistance – junction to case

5°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

-0.2

-0.4

mA

"1" Input Current

140

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

2.0

V

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

250

450

nS

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

150

450

nS

Differential output noise, inhibit mode

210

Differential output impedance (inhibited)

Note 1

2K

Ω

Output Characteristics

Differential output level

6.3

7.0

7.7

Rise and fall times(10% to 90% of P-P output)

200

250

300

nS

Output offset at point A-A' on Figure 5, 2.5µS

after midpoint crossing of the parity bit of the

last word of a 660µS message

± 90

mV peak

Delay from 50% point of TX DATA or TX DATA

input to zero crossing of differential signal

290

400

nS

(Note: Normal operation conditions require

one transceiver on and the other off.)