ACT4402 Aeroflex Circuit Technology, ACT4402 Datasheet - Page 2

• Manufacturer Part Number: ACT4402
• Description: Act4402 Single Transceiver For Mil-std-1553/1760
• Manufacturer: Aeroflex Circuit Technology

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 inputs and
disables
Transmitter
Figure 1). The Transmitter may be
safely operated for an indefinite
period with the bus (point A) short
circuited at 100% duty cycle.
Receiver
Aeroflex Circuit Technology
The Receiver section accepts
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 (ACT4402)
the
Note: DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them,
Logic
and must be in the same state during off times (both high or low).
transmitter
Waveform,
(See
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).
detect data bus signals, point A
Figure 5, exceeding 1.20 Volts P-P
and reject signals less than 0.6
Volts
The pre-set internal thresholds will
P-P
when
2
used
Note overlap
with
a
SCD4402 REV A 5/28/99 Plainview NY [phone]
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