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डेटा पत्रक - ARX4435 Transceiver for Macair H009 Specification - Aeroflex Circuit Technology

भाग संख्या 4435
समारोह ARX4435 Transceiver for Macair H009 Specification
मैन्युफैक्चरर्स Aeroflex Circuit Technology 
लोगो Aeroflex Circuit Technology लोगो 
पूर्व दर्शन
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4435 pdf
an overriding “INHIBIT” input returns the output
impedance to a high 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 1.)
The transmitter utilizes an active filter to suppress
harmonics above 1 mHz to meet H 009 Macair speci-
fications. The transmitter may be safely operated for
an indefinite period with the output 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 repre-
sent positive and negative excursions of the input
beyond a pre-determined threshold.(See Receiver
Logic Waveforms, Figure 2.)
The internal threshold is nominally set to detect
data bus signals exceeding 1.05 Volts P-P and reject
signals less than 0.6 volts P-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. If unused, a 2K pull-up to +5 Volts
is recommended
Figure 1 - Transmitter Logic Waveforms
Region 1
23
DATA IN
DATA IN
INHIBIT
LINE TO LINE
OUTPUT
Notes: 1. Data and DATA inputs must be complementry 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, (Terminate Mode), Region 3, Transmitter signal
on, low Z.
Figure 2 - Receiver Logic Waveforms
LINE TO LINE
INPUT
Rx DATA OUT
Rx DATA OUT
Note overlap
Note: Waveforms shown are for normally low devices. For normally high receiver output
level devices, the receiver outputs are swapped as shown by the dashed lines
Aeroflex Circuit Technology
2 SCD4435 REV B 2/3/99 Plainview NY (516) 694-6700

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