Aeroflex Circuit Technology

SCD4458 REV A 1/29/98 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

600 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

1

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

2.0

V

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

250

350

nS

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

150

250

nS

Differential output noise, inhibit mode

2

10

Differential output impedance (inhibited)

Note 1

2K

Ω

Output Characteristics

Differential output level

6

7.5

9

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

100

200

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

120

250

nS

(Note: Normal operation conditions require one transceiver on and the

other off.)