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HS-246RH Radiation Hardened Triple Line Receiver The HS-245RH/246RH/248RH radiation hardened triple line transmitter and triple line receivers are fabricated using the Intersil dielectric isolation process. These parts are identical in pinout and function to the original HD-245/246/248. They are also die size and bond pad placement compatible with the original parts for those customers who buy dice for hybrid assembly. Each transmitter-receiver combination provides a digital interface between systems linked by 100Ω twisted pair, shielded cable. Each device contains three circuits fabricated within a single monolithic chip. Data rates greater than 15MHz are possible depending on transmission line loss characteristics and length. The transmitter employs constant current switching which provides high noise immunity along with high speeds, low power dissipation, low EMI generation and the ability to drive high capacitance loads. In addition, the transmitters can be turned "off" allowing several transmitters to timeshare a single line. Receiver input/output differences are shown in the table: The internal 100Ω cable termination consists of 50Ω from each input to ground.
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