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PDF ACT4489-DFI Data sheet ( Hoja de datos )
| Número de pieza | ACT4489-DFI | |
| Descripción | ACT 4489 DUAL TRANSCEIVER FOR MIL-STD-1553/1760 | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
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ACT 4489 DUAL TRANSCEIVER
FOR MIL-STD-1553/1760
Features
CIRCUIT TECHNOLOGY
www.aeroflex.com/act1.htm
• +5 / ±12 Volt Supply Operation
• Low Power Dissipation
General Description
• Small Size & Light Weight
• Dual Transceivers Saves Space & Cost
• 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)
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.
Each channel of the dual
transceiver is completely separate
from the other and fully
independent. This includes power
leads as well as signal lines.
Hence, each channel may be
connected to a different data bus
with no interaction.
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
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4489D REV A 1/30/98
1 page  
Figure 3 – Transmitter (TX) Output Offset
0 Volts
LAST BIT
2.5 µsec
Magnified View
*OUTPUT OFFSET
*OUTPUT OFFSET
*Offset measured at point A in Figure 5
Figure 5 – Typical 1553 Bus Connections
Transformer Coupled Stub
70Ω
ACT 4489
TX DATA OUT
1 : 0.707
37
2
C
1 : 1.4 52.5Ω
A
TX DATA OUT
RX DATA IN
RX DATA IN
15
T1553-1
Zoi
52.5Ω
VCM
Figure 4 – Hybrid Power Dissipation vs. Duty Cycle
(Total hybrid with one channel transmitting
and the other not powered – 100% Duty Cycle)
3600
3200
2800
2400
2000
1600
1200
Typical Hybrid Input Power
3.0W
1.9W
800 Typical Hybrid
400
0.270
Dissipation
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE – PERCENT
Note: Vcc= +12V, VEE = -12V, VL= +5V, Transformer ratio 1:1,
VBUS (point A) at 7VP-P.
Direct Coupled Stub
ACT 4489
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
1:1
38
2B
52.5Ω
14
T1553-1
52.5Ω
Zoi
A
70Ω
Transformer Model use Technitrol Part# 1553-1
or equivalent
Configurations and Ordering Information
ACT
Model # / Ordering Part #
ACT 4489-D
ACT 4489-DI
ACT 4489-DF
ACT 4489-DFI
Case
Style
DIP
DIP
FP
FP
DESC
Number
TBA
TBA
TBA
TBA
Rx Standby
Normally Low
Normally High
Normally Low
Normally High
Specifications subject to change without notice.
Aeroflex Circuit Technology
5
SCD4489D REV A 1/30/98 Plainview NY (516) 694-6700
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ACT4489-DFI.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ACT4489-DF | ACT 4489 DUAL TRANSCEIVER FOR MIL-STD-1553/1760 | Aeroflex Circuit Technology |
| ACT4489-DFI | ACT 4489 DUAL TRANSCEIVER FOR MIL-STD-1553/1760 | Aeroflex Circuit Technology |
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