ACT4487-F Просмотр технического описания (PDF) - Aeroflex Corporation
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ACT4487-F 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
tDXT
270 400
nS
Input Threshold Voltage (referred to the bus)
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
ICC
Transmitter Standby
IEE
IL
ICC
25% duty cycle
IEE
IL
ICC
50% duty cycle
IEE
IL
ICC
100% duty cycle
IEE
IL
0
1
12 16
18 30
45
50
12
20
18
30
mA
90 100
12 20
18 30
180 200
12 20
18 30
Power Supply Voltages
±15V Operating Power Supply Voltage Range
+5V Operating Power Supply Voltage Range)
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
SCD4487 REV B 1/29/98 Plainview NY (516)694-6700
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