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ARX4810 Datasheet(PDF) 2 Page - Aeroflex Circuit Technology |
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ARX4810 Datasheet(HTML) 2 Page - Aeroflex Circuit Technology |
2 / 6 page Aeroflex Circuit Technology SCD4810 REV B 8/12/98 Plainview NY (516) 694-6700 2 70 Ohm terminations plus additional receivers, the data bus signal produced is 7.5 volts nominal P-P at A-A’. (See Figure 5) When both DATA and DATA inputs are held low or high, the transmitter output becomes a high impedance and is “removed” from the line. In addition, an overriding “INHIBIT input provides for the removal of the transmitter output from the line. A logic “1” applied to the “INHIBIT” takes priority over the condition of the data inputs and disables the transmitter. (See Transmitter Logic Waveform, Figure 1.) The transceiver utilizes an active filter to suppress harmonics above 1 MHz to meet Macair specifications A-3818, A-4905, A-5232 and A-5690. The Transmitter may be safely operated at 100% duty cyclefor an indefinite period into a short circuited, the 1553 or Macair bus. 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 Waveform Figure 2). 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 1:1 turns ratio transformer. (See Figure 5 for transformer data and typical connection.) DATA IN DATA IN INHIBIT LINE TO LINE OUTPUT NOTES: 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). Figure 1 – Transmitter Logic Waveforms Figure 2 – Receiver Logic Waveforms Note overlap NOTE: Waveforms shown are for normally low devices. For normally high receiver output the receiver outputs are swapped as shown by the dashed lines. , level devices, LINE TO LINE INPUT DATA OUT DATA OUT |
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