Electrical Characteristics — Receiver Section
Parameter
Differential Receiver Input Voltage Range
(See Figure 5, Point B)
Common Mode Rejection Ratio (Note 3)
"1" State – Rx Data or Rx Data Output
"0" State – Rx Data or Rx Data Output
Delay (average) from Differential Input Zero
Crossings to RX DATA and RX DATA Output
50% points
Input Threshold Voltage (referred to the bus)
100KHz–1MHz
I
OH
= -0.4 mA
I
OI
= 4 mA
Condition
TXFMR
1:1
Symbol
V
IDR
CMRR
V
OH
V
OL
t
DXT
V
TH
Min
Typ
Max
40
Unit
V
P-P
dB
45
2.5
3.7
0.35
270
0.60
0.75
0.5
400
1.20
V
V
nS
V
P-P
Strobe Characteristics (Logic "0" Inhibits Output)
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Strobe Delay (Turn-on or Turn-off)
V
S
=0.4V
V
S
=2.7V
I
IL
I
IH
V
IL
V
IH
t
SD
2.0
50
100
-0.1
1
-0.2
+40
0.7
mA
µA
V
V
nS
Power Data
Power Supply Currents – Per Channel – See Figure 4
Transmitter Standby
I
CC
I
EE
I
L
I
CC
I
EE
I
L
I
CC
I
EE
I
L
I
CC
I
EE
I
L
0
12
18
58
12
18
115
12
18
230
12
18
1
16
30
63
20
30
125
20
30
250
20
30
25% duty cycle
mA
50% duty cycle
100% duty cycle
Power Supply Voltages
±12V Operating Power Supply Voltage Range
+5V Operating Power Supply Voltage Range)
V
CC
V
EE
V
L
+11.40 +12.00 +12.60
-11.40 -12.00 -12.60
+4.50
+5.00
+5.50
V
V
Note 1. Power on or off, measured from 75KHz to 1MHz at point A and transformer self impedance of 3K
Ω
minimum
at 1MHz.
Note 2. Power Supplies: ±12 Volts ±0.60 V & +5 Volts ±0.5 V, bypassed by 10 µF (Tantalum recommended)
Capacitor minimum. All measurements & specifications apply over the temperature range of -55°C to +125°C
(case temperature) unless otherwise specified.
Note 3. When measured as shown per Figure 5 with ± 10 Volt peak, line to ground, DC to 2MHz
Note 4. Typical power is measured with V
BUS
at point A = 7 V
P-P
Aeroflex Circuit Technology
4
SCD4489D REV A 1/30/98 Plainview NY (516) 694-6700
AEROFLEX [ AEROFLEX CIRCUIT TECHNOLOGY ]
