ACT4487-D Просмотр технического описания (PDF) - Aeroflex Corporation
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ACT4487-D Datasheet PDF : 7 Pages
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Electrical Characteristics — Receiver Section
Parameter
Condition Symbol Min Typ Max Unit
Differential Receiver Input Voltage Range
(See Figure 5, Point B)
Common Mode Rejection Ratio (Note 3)
TXFMR
1.4:1
VIDR
CMRR
45
40
VP-P
dB
"1" State – Rx Data or Rx Data Output
IOH = -0.4 mA
VOH
2.5 3.7
V
"0" State – Rx Data or Rx Data Output
IOI = 4 mA
VOL
0.35 0.5
V
Delay (average) from Differential Input Zero
Crossings to RX DATA and RX DATA Output
50% points
Input Threshold Voltage (referred to the bus)
tDXT
270 400
nS
100KHz–1MHz
VTH
0.60 0.75 1.20 VP-P
Strobe Characteristics (Logic "0" Inhibits Output)
"0" Input Current
VS=0.4V
IIL
-0.1 -0.2 mA
"1" Input Current
VS=2.7V
IIH
1 +40 µA
"0" Input Voltage
"1" Input Voltage
VIL
VIH
2.0
0.7
V
V
Strobe Delay (Turn-on or Turn-off)
tSD
50 100
nS
Power Data
Power Supply Currents – Per Channel – See Figure 4
Transmitter Standby
25% duty cycle
50% duty cycle
100% duty cycle
Power Supply Voltages
±15V Operating Power Supply Voltage Range
+5V Operating Power Supply Voltage Range)
ICC
0
1
IEE
12
16
IL
18
30
ICC
45
50
IEE
12
20
IL
18
30
mA
ICC
90 100
IEE
12
20
IL
18
30
ICC
180 200
IEE
12
20
IL
18
30
VCC +14.25 +15.00 +15.75 V
VEE -14.25 -15.00 -15.75
VL +4.50 +5.00 +5.50 V
Note 1. Power on or off, measured from 75KHz to 1MHz at point A and transformer self impedance of 3KΩ minimum
at 1MHz.
Note 2: Power Supplies: ±15 Volts ±0.75 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 VBUS at point A = 7.5 VP-P
Aeroflex Circuit Technology
4
SCD4487D REV B 3/10/98 Plainview NY (516) 694-6700
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