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PDF ACT4480-DFI Data sheet ( Hoja de datos )
| Número de pieza | ACT4480-DFI | |
| Descripción | Dual Transceiver | |
| Fabricantes | Aeroflex Circuit Technology | |
| Logotipo |  |
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Standard Products
ACT4480-DFI Dual Transceiver
for H009 Specification
www.aeroflex.com/avionics
February 27, 2013
FEATURES
□ Dual transceiver meets McDonnell Douglas H009 data bus specifications
□ Operates with ±12V to ±15 and +5V power supplies
□ Monolithic construction using linear ASICs
□ Packaging – Low profile ceramic
- 0.60''W x 0.80''L x 0.14''H
□ Designed for commercial, industrial and aerospace applications
□ Full MIL-PRF-38534 qualification pending
DESCRIPTION
The Aeroflex Plainview transceiver model ACT4480-DFI is a new generation monolithic transceiver which
provides compliance with H009 data bus requirements using three DC power supplies operation. The
dual channel ACT4480-DFI performs the front-end analog function of inputting and outputting data
through a transformer to a H009 data bus.
Design of these transceivers 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. The active filter
design provides the required H009 low harmonic distortion waveform without increasing the pulse delay
characteristics significantly. Efficient transmitter electrical and thermal design provides low internal power
dissipation and heat rise at high and well as low duty cycles. The receiver input threshold is set internally.
TRANSMITTER
The Transmitter section accepts complementary TTL data at the input, and when coupled to the data
bus with a 1:1 transformer, isolated on the transceiver side with two 34 Ohm bus terminating resistors, with
the bus terminated by a 175 Ohm resistor, the data bus signal produced is 20VP-P nominal at A-A' (See
Figure 5). When both DATA and DATA inputs are held low or high, the transmitter output remains a low
impedance and signal is “removed” from the line. In addition, an overriding “INHIBIT" input returns the
output to a high impedance state. A logic “1” applied to the “INHIBIT” takes priority over the condition of
the data inputs and disables the transmitter (See Transmitter Logic Waveforms - Figure 2).
The transmitter utilizes an active filter to suppress harmonics above 1MHz to meet H009 specifications.
The transmitter may be safely operated for an indefinite period at 100% duty cycle into a data bus short
circuit.
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 Waveforms - Figure 3).
The internal threshold is nominally set to detect data bus signals exceeding 2.0VP-P when used with a
1:1 turns ratio transformer (See Figure 5 for transformer data and typical connection).
A low level at the Strobe input inhibits the DATA and DATA outputs (Pin is internally pulled up).
SCD4480-DFI
1 page  
DATA DATA INHIBIT
XX
HH
LL
HL
LH
H
L
L
L
L
OUTPUT
High Z
Low Z (No signal)
Low Z (Signal)
FIGURE 1 – TX OUTPUT TRUTH TABLE
Notes: 1. Data and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them, and in the
same state during the off time (both high and low).
2. Region 1; no output signal, High Z state, (Receive Mode), Region 2; No Output signal, Low Z state, Region 3; Transmitter signal
on, low Z (Transmitter mode), Region 4; No Output signal, Low Z state, (Terminate Mode).
FIGURE 2 – TRANSMITTER LOGIC WAVEFORMS
SCD4480-DFI Rev B 2/27/2013
5
Aeroflex Plainview
5 Page 
Model No.
ACT4480-DFI-7
CONFIGURATIONS AND ORDERING INFORMATION
Screening
DESC SMD Receiver Data Case
level
Commercial flow, +25°C testing only
N/A
Normally High
Flat
Pack
ACT4480-DFI
Military Temperature, -55°C to +125°C
Screened in accordance with the individual
Test Methods of MIL-STD-883 for Military Applications.
Pending
Normally High
Flat
Pack
PLAINVIEW, NEW YORK
Toll Free: 800-THE-1553
Fax: 516-694-6715
SE AND MID-ATLANTIC
Tel: 321-951-4164
Fax: 321-951-4254
INTERNATIONAL
Tel: 805-778-9229
Fax: 805-778-1980
WEST COAST
Tel: 949-362-2260
Fax: 949-362-2266
NORTHEAST
Tel: 603-888-3975
Fax: 603-888-4585
CENTRAL
Tel: 719-594-8017
Fax: 719-594-8468
Aeroflex Microelectronic Solutions reserves the right to
change at any time without notice the specifications,
design, function, or form of its products described herein.
All parameters must be validated for each customer's
application by engineering. No liability is assumed as a
result of use of this product. No patent licenses are implied.
SCD4480-DFI Rev A 2/6/2013
11
Our passion for performance is defined by three attributes
represented by these three icons:
Solution-minded, performance-driven and customer-focused.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ACT4480-DFI.PDF ] | |
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