GENERAL DESCRIPTION
The Aeroflex Laboratories transceiver model ACT4444 is a monolithic transceiver which provides full compliance with Macair and MIL-STD-1553 data bus requirements. The model ACT4444 performs the front-end analog function of inputting and outputting data through a transformer to a MIL-STD-1553 or Macair data bus with a few external components.
The ACT4444 can be considered a "Universal" Transceiver in that it is compatible with MIL-STD-1553A, B, Macair A-3818, A-4905, A-5232 and A-5690.
Design of these transceivers reflects particular attention to active filter performance. This results in low bit and word error rate with superior waveform purity and minimal zero crossover distortion. The ACT4444 active filter design has additional high frequency roll-off to provide the required Macair low harmonic distortion waveform without increasing the pulse delay characteristics significantly.
Efficient transmitter electrical and thermal design provides low internal power dissipation and heat rise at high and well as low duty cycles.
An optional receiver input threshold adjustment can be accomplished by the use of the "External Threshold" terminals.

FEATURES
*Transceiver meets MIL-STD-1553A & B, Macair A3818, A4905, A5232 and A5690 specs
*Bipolar Supply ±15V to ±12V, Logic Supply +5V
*Replacement for function of CT3232 & ACT4404 in new designs
*Voltage source output
*Monolithic construction
*Aeroflex is a Class H & K MIL-PRF-38534 Manufacturer
*Miniature Chipscale Package Bumped Chip Carrier™ (BCC++)

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