Aeroflex Circuit Technology

4

SCDCT3232 REV A 6/27/02 Plainview NY (516) 694-6700

Receiver con’t

Output Characteristics, RX Data & Data

Note: With Receiver input below threshold, both RX Data & RX

Data outputs remain in “1” state.

Delay (average) from differential input zero crossings to RX Data

& RX Data output 50% points.

2.5

-

-

3.3

-

290

-

0.5

450

V

V

ns

Note 1: Assumes unit in free air (natural convection cooling).

Driver

Power Supply Voltage Ranges

+11.75

-11.75

-

-

+15.75

-15.75

V

V

(TX Inhibit high; or TX Data & TX Data both high or both low)

-

-

12

0

Note 2

1.0

mA

mA

Supply Current transmitting at 1MHz into a 35

Ω load

at point A in Figure 4

or duty cycle)

Duty Cycle

Note 4

45

Note 2

mA

25%

Note 3

35

Note 2

mA

100%

Note 4

150

Note 2

mA

Note 3

135

Note 2

mA

Input Characteristics, TX Data In or TX Data In

“0” Input Voltage

“1” Input VoltageV

-

-

-

2.0

-

-

-

-

-1.2

100

0.7

-

mA

µa

V

V

Inhibit Characteristic

“0” Input Voltage

“1” Input Voltage

Delay from TX Inhibit (0

Delay from TX Inhibit (1

Differential output noise, inhibit mode

Differential output impedance (inhibited) at 1MHz

-

-

-

2.0

-

-

-

10K

-

-

-

-

300

100

-

-

-0.8

50

0.7

-

450

350

10

-

mA

µA

V

V

ns

ns

Ω

Output Characteristics (Figure 3)

Differential output level (140 ohm load)

Differential Active output impedance at 1MHz

Rise and Fall times (10% to 90% of p-p output)

Output offset at point A in Fig. 4 (35

Ω load) 2.5µS after mid-bit

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

Delay from 50% point of TX Data or TX Data input to zero

crossing of differential output

28

-

200

-

-

32

-

-

±20

220

35

10

300

±75

350

Vp-p

Ω

ns

mVpeak

ns

Note 2: Maximum supply currents for driver and receiver combined are included in power and thermal data table.

Electrical Characteristics con’t

Parameter / Condition

Sym

Min

Typ

Max

Unit