Aeroflex Circuit Technology

SCD4810 REV B 8/12/98

Plainview NY (516) 694-6700

4

Note 3. Measured at the bus side of the transformer, including the contribution from the transformer.

Note 5. Specifications apply over the case temperature range of -55°C to +125°C unless otherwise specfied.

Note 6. All typical values are measured at +25°C

Note 7. A 1uf, 10 Volt capacitor is required on the TX/RX terminal for each transceiver as shown in Figure 5. A Sprague

194D type (.05" W x .10" L x .05" H ) is suggested.

Electrical Characteristics, Receiver Section

Parameter

Condition

Sym

Min

Typ

Max

Unit

Differential Input Impedance

f = 1MHz

20K

Ω

Differential Voltage Range

±4

V peak

Input Common Mode Voltage Range

Note 1

±2.5

V peak

Common Mode Rejection Ratio Note 3

Note 1

CMRR

40

dB

"0" Input Current

-0.25

-0.4

mA

"1" Input Current

Vs = 2.7V

1

+40

µA

"0" Input Voltage

0.7

V

"1" Input Voltage

2.0

V

Strobe Delay (turn-on or turn-off)

Note 1

10

78

nS

Threshold Characteristics (Sinewave input )

Input Threshold Voltage

(referred to the bus)

100KHz-1MHz

VTH

0.60

0.8

1.15

Output Characteristics, RX DATA and RX DATA

"1" State

2.5

3.4

V

"0" State

0.3

0.5

V

Delay, (average) from differential input zero cross-

ings to RX DATA and RX DATA output 50% points

280

450

nS

Power Data

Maximum Currents, per channel (Power supplies used are -15V, and +5V)

Duty Cycle

-V

+V and Logic

Transmitter Standby

42 mA

48 mA

25% duty cycle, Note 1

85mA

90 mA

50% duty cycle

105 mA

110 mA

100% duty cycle, Note 1

140 mA

145 mA

Power supply Voltages

-V

-14.25 Volts to -15.75 Volts

Logic and +V

4.5 Volts to 5.5 Volts