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ACT4489-I PDF даташит

Спецификация ACT4489-I изготовлена ​​​​«Aeroflex Circuit Technology» и имеет функцию, называемую «ACT 4489 SINGLE TRANSCEIVER FOR MIL-STD-1553/1760».

Детали детали

Номер произв ACT4489-I
Описание ACT 4489 SINGLE TRANSCEIVER FOR MIL-STD-1553/1760
Производители Aeroflex Circuit Technology
логотип Aeroflex Circuit Technology логотип 

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ACT4489-I Даташит, Описание, Даташиты
ACT 4489 SINGLE TRANSCEIVER
FOR MIL-STD-1553/1760
Features
• +5 / ±12 Volt Supply Operation
CIRCUIT TECHNOLOGY
www.aeroflex.com/act1.htm
• Low Power Dissipation
• Small Size & Light Weight
• Outstanding MIL-STD-1553 performance
• Radiation Hard Dielectric Isolation Monolithic
Construction for Severe Environments
• Superior High Frequency Line Transient and
Input Ripple Rejection
• Input and Output TTL Compatible Design
• Processed and Screened to MIL-STD-883 Specs
• MIL-PRF-38534 Compliant Devices Available
TX DATA IN
TX DATA IN
TX INHIBIT IN
+5V (VL)
+12V (VCC)
-12V (VEE)
GND1
GND2
GND3
RX DATA IN
RX DATA IN
CASE
RX STROBE IN
DRIVER
INPUT
AMPLIFIER
ACTIVE
FILTER
REFERENCE
ACTIVE
FILTER
OUTPUT
STAGE
TX DATA OUT
TX DATA OUT
COMP.
RX DATA OUT
COMP.
RX DATA OUT
Block Diagram (Without Transformer)
General Description
The Aeroflex Circuit
Technology ACT 4489 is a next
generation monolithic transceiver
design which provides full
compliance to MIL-STD-1553A/B
and 1760 requirements in a small
package with low power
consumption.
The ACT 4489 series performs
the front-end analog function of
inputting and outputting data
through a transformer to the
MIL-STD-1553 data bus.
Design of this transceiver reflects
particular attention to active filter
performance. This results in low bit
and word error rate with superior
waveform purity and minimal zero
crossover distortion. Efficient
transmitter electrical and thermal
design provides low internal power
dissipation and heat rise at high as
well as low duty cycles.
Transmitter:
The Transmitter section accepts
bi-phase TTL data at the input and
when coupled to the data bus with a
1:1 ratio transformer, isolated on
the data bus side with two 52.5
Ohm fault isolation resistors, and
loaded by two 70 Ohm
terminations, the data bus signal is
typically 7 Volts P-P at point A (See
Figure 5). When both DATA and
DATA inputs are held low or high,
the transmitter output becomes a
high impedance and is “removed”
from the line. In addition, an
overriding “INHIBIT" input provides
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4489 REV A 1/29/98









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ACT4489-I Даташит, Описание, Даташиты
for the removal of the transmitter
output from the line. A logic “1”
signal applied to the “INHIBIT” takes
priority over the condition of the
data inputs and disables the
transmitter (See Transmitter Logic
Waveform, Figure 1). The
Transmitter may be safely operated
for an indefinite period with the bus
(point A) short circuited at 100%
duty cycle.
Receiver:
The Receiver section accepts
bi-phase differential data at the
input and produces two TTL signals
at the output. The outputs are DATA
and DATA, and represent positive
and negative excursions of the input
beyond a pre-determined threshold
(See Receiver Logic Waveform,
Figure 2).
The pre-set internal thresholds will
detect data bus signals, point A
Figure 5, exceeding 1.20 Volts P-P
and reject signals less than 0.6
Volts P-P when used with a
transformer (See Figure 5 for
transformer data and typical
connection).
A low level at the RX Strobe
input inhibits the DATA and
DATA outputs. If unused, a 2K
pull-up to +5 Volts
is
recommended.
Figure 1 — Transmitter Logic Waveforms Idealized
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
Note: DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them,
and must be in the same state during off times (both high or low).
Figure 2 — Receiver Logic Waveforms Idealized (ACT4489)
LINE TO LINE
INPUT
STROBE
DATA OUT
DATA OUT
Aeroflex Circuit Technology
Note overlap
2 SCD4489 Rev A 1/29/98 Plainview NY (516) 694-6700









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ACT4489-I Даташит, Описание, Даташиты
Absolute Maximum Ratings
Operating case temperature
-55°C to +125°C
Storage case temperature
-65°C to +150°C
Power supply voltage
VCC
VEE
VL
-0.3 V to +18 V
+0.3 V to-18 V
-0.3 V to +7.0 V
Logic input voltage
-0.3 V to +5.5 V
Receiver differential input
±40 VP-P
Receiver input voltage (common mode)
±10 V
Driver peak output current
300 mA
Total package power dissipation over the full operating
case temperature rise
2.5 Watts
Maximum junction to case temperature
10°C
Thermal resistance – junction to case
4°C/W
Electrical Characteristics — Driver Section
Input Characteristics, TX DATA IN or TX DATA IN (Notes 2 & 3 apply)
Parameter
Condition Symbol Min Typ
Ma
x
Unit
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Inhibit Characteristics
"0" Input Current
"1" Input Current
"0" Input Voltage
"1" Input Voltage
Delay from TX inhibit, (0¡1) to inhibited output
Delay from TX inhibit, (1¡0) to active output
Differential output noise, inhibit mode
Differential output impedance (inhibited) Note 1
See Figure 5
VIN = 0.4 V
VIN = 2.7 V
IILD
IIHD
VIHD
VIHD
VIN = 0.4 V
VIN=2.7V
From mid pt
inhibit to
±1.2V pt B,
See Figure 5
Point B
Point C
IILI
IIHI
VILI
VIHI
tDXOFF
tDXON
VNOI
ZOI
ZOI
-0.1 -0.2
1 40
0.7
2.0
mA
µA
V
V
-0.1 -0.2
1.0 40
0.7
2.0
mA
µA
V
V
175 225
nS
90 150
nS
2 10 mVP-P
2K
1K
Output Characteristics
Differential output level,
See Figure 5
Rise and fall times(10% to 90% at pt A output)
See Figure 5
Output offset, Figure 3, 2.5µS after midpoint
crossing of the parity bit of the last word of a 660µS
message See Figure 5
Delay from 50% point of TX DATA or TX DATA input
to zero crossing of differential signal. See Fig 5
Point A
Point A
Point A
Point A
VO 6 7 9
VP-P
tr
100 160 300
nS
VOS ± 90 mV peak
tDXT
100 200
nS
Aeroflex Circuit Technology
3 SCD4489 Rev A 1/29/98 Plainview NY (516) 694-6700










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