|
|
PDF ACT4487 Data sheet ( Hoja de datos )
| Número de pieza | ACT4487 | |
| Descripción | Single Transceiver | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ACT4487 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
|
No Preview Available !
Standard Products
ACT4487 Single Transceiver
for MIL-STD-1553A/B, MIL-STD-1760 & SAE-AS15531
www.aeroflex.com/Avionics
February 14, 2008
FEATURES
❑ Small size, light weight and low power dissipation, single transceiver
❑ +5V / ±15V DC power supply operation
❑ Outstanding MIL-STD-1553 / SAE-AS15531 performance
❑ Monolithic construction
❑ Input and output TTL compatible design
❑ Designed for commercial, industrial and aerospace applications
❑ MIL-PRF-38534 compliant devices available
❑ Aeroflex-Plainview is a Class H & K MIL-PRF-38534 manufacturer
GENERAL DESCRIPTION
The Aeroflex-Plainview ACT4487 is the next generation monolithic transceiver design which provides full
compliance with MIL-STD-1553A/B, MIL-STD-1760 and meets SAE-AS15531 requirements in the smallest
package with lower pin count for those designs with less board space. The ACT4487 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 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, an overriding “INHIBIT input provides for the removal of the transmitter output from the line. A logic “1”
applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the transmitter (See
Figure 1 Transmitter Logic Waveform). 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 Figure 2 Receiver Logic Waveform).
The pre-set internal thresholds will detect data bus signals 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 connections).
A low level at the Strobe input inhibits the DATA and DATA outputs. If unused, a 2K pull-up to +5 Volts is
recommended.
SCD4487 Rev F
1 page  
0 Volts
LAST BIT
2.5 µsec
Magnified View
*OUTPUT OFFSET
*OUTPUT OFFSET
*Offset measured at Point A in Figure 5
FIGURE 3 – TRANSMITTER (TX) OUTPUT
OFFSET
3600
3200
2800
2400
Typical Hybrid Input Power
2.97W
2000
1600
1.87W
1200
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.
FIGURE 4 – POWER DISSIPATION VS.
DUTY CYCLE
Transformer Coupled Stub
70Ω
ACT 4487
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
2:1
37
2C
15
T1553-2
Zoi
1:1.4 52.5Ω
A
52.5Ω
VCM
Direct Coupled Stub
ACT 4487
TX DATA OUT
TX DATA OUT
RX DATA IN
RX DATA IN
1.4:1
38
2B
14
T1553-2
52.5Ω
52.5Ω
Zoi
A
70Ω
Transformer Model use Technitrol Part# 1553-2
or equivalent
FIGURE 5 – TYPICAL 1553 BUS
CONNECTIONS
SCD4487 Rev F 2/14/08
5
Aeroflex Plainview
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet ACT4487.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ACT4480-DFI | Dual Transceiver | Aeroflex Circuit Technology |
| ACT4487 | Dual Transceiver | Aeroflex Circuit Technology |
| ACT4487 | Dual Transceiver | Aeroflex Circuit Technology |
| ACT4487 | Single Transceiver | Aeroflex Circuit Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |