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PDF ACT4436-DFI Data sheet ( Hoja de datos )
| Número de pieza | ACT4436-DFI | |
| Descripción | ACT 4436 DUAL TRANSCEIVER FOR MIL-STD-1553/1760 | |
| Fabricantes | Aeroflex Circuit Technology | |
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ACT 4436 DUAL TRANSCEIVER
FOR MIL-STD-1553/1760
Features
5 Smaller Case Outline than ACT4487D
CIRCUIT TECHNOLOGY
www.aeroflex.com/act1.htm
• +5 / ±15 Volt Supply Operation
• Low Power Dissipation
• Outstanding MIL-STD-1553 performance
• Radiation Hard Dielectric Isolation Monolithic
Construction for Severe Environments
• Input and Output TTL Compatible Design
• Processed and Screened to MIL-STD-883 Specs
• MIL-PRF-38534 Compliant Devices Available
• DESC SMD# 5962-89447
TX DATA IN
TX DATA IN
TX INHIBIT IN
+5V (VL)
+15V (VCC)
-15V (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 4436 is a next generation
monolithic transceiver design
which provides full compliance to
MIL-STD-1553A/B and 1760 re-
quirements in a smaller package
with lower pin count then the
ACT4487D, for those designs with
less board space.
The ACT 4436 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
1.4:1 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 7.5 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,
eroflex Circuit Technology – Data Bus Modules For The Future © SCD4436D REV B 3/10/98
1 page  
Figure 3 – Transmitter (TX) Output Offset
0 Volts
LAST BIT
Magnified View
*OUTPUT OFFSET
*OUTPUT OFFSET
2.5 µsec
*Offset measured at point A in Figure 5
Figure 5 – Typical 1553 Bus Connections
Transformer Coupled Stub
70Ω
ACT 4436
TX DATA OUT
2:1
37
2
C
1:1.4 52.5Ω
A
TX DATA OUT
RX DATA IN
RX DATA IN
15
T1553-2
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
2.97W
1.87W
800 Typical Hybrid
400
0.270
Dissipation
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE – PERCENT
Note: Vcc= +15V, VEE = -15V, VL= +5V, Transformer ratio 1.4:1,
VBUS (point A) at 7.5VP-P.
Direct Coupled Stub
ACT 4436
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
1.4:1
38
2B
52.5Ω
14
T1553-2
52.5Ω
Zoi
A
70Ω
Transformer Model use Technitrol Part# 1553-2
or equivalent
Configurations and Ordering Information
ACT
Model # / Ordering Part #
Case
Style
ACT 4436-D
Plug In
ACT 4436-DI
Plug In
ACT 4436-DF
Flat Package
ACT 4436-DFI
Flat Package
Specifications subject to change without notice.
Aeroflex Circuit Technology
5
DESC
Number
5962-TBA
5962-8944708HUX
5962-TBA
5962-8944708HZX
Rx Standby
Normally Low
Normally High
Normally Low
Normally High
SCD4436D REV B 3/10/98/98 Plainview NY (516) 694-6700
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ACT4436-DFI.PDF ] | |
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