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The receiver offers true Fail-Safe operation, providing a guaranteed logic high output when the bus is open-circuit, short-circuit or idle (terminated but not driven). The receiver’s worst case minimum input resistance is at least 70 kΩ at 200°C.

Holt Integrated Circuits introduces RS-485/422 transceivers capable of -55C to 200C operation

Holt Integrated Circuits today announced the introduction of a family of RS-485/422 transceivers capable of operating in temperatures from -55°C to 200oC. The HI-4853H family is capable of data rates up to 20Mbps (50 ft. CAT-5 UTP).

All devices in the family offer extended power supply range (3.15V to 5.5V), controlled slew rate and a wide common mode voltage range (-12V to +15V for half-duplex, ± 20V for full-duplex). Each device delivers at least ± 1.50V and ± 2.00V output drive at worst-case supply voltages of 3.15V and 4.5V respectively, over an extended temperature range of -55°C to +200°C into a differential load of 54Ω and 50pF.

"This family of devices provides customers with the capability of operating in extremely harsh environments, with all device parameters guaranteed across the full temperature range -55°C to +200°C," said Anthony Murray, Director of Business Development at Holt. "These devices are targeted at high temperature avionics and industrial applications such as MMSI / EBR-1553 and down-hole drilling."

The HI-4853H operates half duplex whereas the HI-4854H and HI-4855H provide full duplex operation. Operation up to 200°C is guaranteed in an 8-pin CERDIP package with industry standard pin-outs, whereas plastic SOIC package options guarantee operation up to 175°C.

Press release issued by Holt Integrated Circuits, Inc. on October 24, 2012

 

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Holt Integrated Circuits, Inc. Electronic Components, Circuits, Data Bus

 

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Passive Electronic Components
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