ACT4433 Aeroflex Circuit Technology, ACT4433 Datasheet - Page 2

• Manufacturer Part Number: ACT4433
• Description: Act 4433 Dual Transceiver For Mil-std-1553/1760
• Manufacturer: Aeroflex Circuit Technology

overriding “INHIBIT" input provides
for the removal of the transmitter
output from the line. A logic “1”
signal applied to the “INHIBIT” takes
priority over the condition of the
data
transmitter (See Transmitter Logic
Waveform,
Transmitter may be safely operated
for an indefinite period with the bus
(point A) short circuited at 100%
duty cycle.
Aeroflex Circuit Technology
LINE TO LINE
DATA IN
DATA IN
INHIBIT
LINE TO LINE
DATA OUT
DATA OUT
INPUT
STROBE
OUTPUT
Figure 1 — Transmitter Logic Waveforms Idealized
Figure 2 — Receiver Logic Waveforms Idealized (ACT 4433D)
inputs
Note: DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them,
and must be in the same state during off times (both high or low).
and
Figure 1).
disables
The
the
Receiver:
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 Waveform,
Figure 2).
The Receiver section accepts
The pre-set internal thresholds will
2
Note overlap
SCD4433D REV B 1/30/98 Plainview NY [phone]
detect data bus signals, point A
Figure 5, 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
connection).
input inhibits the DATA
DATA outputs. If unused, a 2K
pull-up
recommended.
A low level at the RX Strobe
to
+5
Volts
and
is