Aeroflex Circuit Technology

3

SCD4468D REV B 5/25/00 Plainview NY (516) 694-6700

Absolute Maximum Ratings

Operating Case Temperature

-55°C to +125°C

Storage Case Temperature

-65°C to +150°C

Positive Power Supply Voltage

-0.3 V to +7.0 V

Receiver Differential Input

±10 V

Receiver Input Voltage (Common Mode)

±5 V

Driver Peak Output Current

650 mA

Total Package Power Dissipation over the Full Operating Case

Temperature Rise

2 Watt

(Note: Normal operation conditions require one

transmitter on and the other off at any given time.

Maximum Junction To Case Temperature Rise for the Hottest

Device

10°C

Thermal Resistance, Junction to Bottom of Case

5°C/W

Electrical Characteristics – Driver Section

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

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 out-

put

200

300

nS

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

80

150

nS

Differential Output Noise, inhibit mode

2

10

mV p-p

Differential Output Impedance (inhibited)

Note 1

2K

Ω

Output Characteristics

Differential output level

6.5

7.5

8.0

V p-p

Rise And Fall Times(10% to 90% of p-p out-

put)

100

170

300

nS

Output Offset at point A-A’on Fig 5., 2.5 µS

after midpoint crossing of the parity bit of the

last word of a 660 µS message

±90

mV peak

Delay from 50% point of TX DATA or TX

DATA input to zero crossing of differential

signal

100

150

nS

Note 1. Power ON/OFF, measured from 75KHz to 1MHz at Point A-A. See Figure 5