The Aeroflex Laboratories transceiver model ACT4435N is a new generation monolithic transceiver which provide full compliance with Macair and MIL-STD-1553 data bus requirements The model ACT4435N performs the front-end analog function of inputting and outputting data through a transformer to a H009 data bus. The 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 ACT4435N active filter design has additional high frequency roll-off to provide the required 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.