ACT4438 Aeroflex Circuit Technology, ACT4438 Datasheet - Page 2

• Manufacturer Part Number: ACT4438
• Description: Act4438-1 Transceiver For Mil-std-1553 / 1760 in a Chipscale Package
• Manufacturer: Aeroflex Circuit Technology

condition of the data inputs and
disables
Transmitter
Figure 1.)
The transceiver utilizes an active
filter to suppress harmonics above
1MHz.
safely operated at 100% duty cycle
for an indefinite period into a short
circuited 1553 bus.
Aeroflex Circuit Technology
Figure 1. Transmitter Logic Waveforms
DATA IN
DATA IN
INHIBIT
LINE TO LINE
NOTES:
LINE TO LINE
DATA OUT
DATA OUT
OUTPUT
Figure 2. Receiver Logic Waveforms
INPUT
1. DATA and DATA inputs must be complementary waveforms or 50% duty cycle average, with no delays between them.
2. DATA and DATA must be in the same state during off time (both high or low).
The Transmitter may be
the
NOTE
Logic
transmitter.
:
Waveforms shown are for normally low devices.
Waveform,
(See
Receiver
The
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.)
Receiver
2
section
accepts
Note overlap
SCD4438-1 REV A 11/19/01 Plainview NY [phone]
The pre-set internal thresholds will
detect data bus signals exceeding
1.150 Volts P-P and reject signals
less than 0.6 volts P-P when used
with a 1:2.5 turns ratio transformer.
(See Figure 5 for transformer data
and typical connection.)