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ACT4489-F fiches techniques PDF

Aeroflex Circuit Technology - ACT 4489 SINGLE TRANSCEIVER FOR MIL-STD-1553/1760

Numéro de référence ACT4489-F
Description ACT 4489 SINGLE TRANSCEIVER FOR MIL-STD-1553/1760
Fabricant Aeroflex Circuit Technology 
Logo Aeroflex Circuit Technology 





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ACT4489-F fiche technique
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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