HI-4853H High Operating Temperature Transceivers

By Holt Integrated Circuits Inc 124

HI-4853H High Operating Temperature Transceivers

Holt Integrated Circuits' HI-4853H transceivers are capable of data rates up to 20 Mbps and offer extended power supply range of 3.15 V to 5.5 V, controlled slew rate, and a wide common mode voltage range (-12 V to +15 V for half-duplex, ±20 V for full-duplex). Each device delivers at least ±1.50 V and ±2.00 V output drive at worst-case supply voltages of 3.15 V and 4.5 V respectively, over an extended temperature range of -55°C to +200°C into a differential load of 54 Ω and 50 pF.

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.

The HI-4853H operates half-duplex, whereas the HI 4854H and HI-4855H provide full-duplex operation.

  • Extended temperature ranges -55°C to +175°C (plastic packages) and -55°C to +200°C (ceramic CERDIP-8 package)
  • Extended power supply operating range (3.15 V - 5.5 V)
  • Extended receiver common-mode range:
    • -12 V to +15 V half-duplex
    • +/-20 V full-duplex
  • ESD protection:
    • 16 KV HBM (Bus Pins)
    • 8 KV HBM (Logic Pins)
  • Slew rate control and pre-emphasis for superior EMI
  • 20 Mbps data rate up to 50 ft. (CAT-5 UTP)
  • 12 Mbps data rate up to 1000 ft. (CAT-5 UTP)
  • Guaranteed Fail-Safe receiver operation
  • Current limiting protection
  • Industry standard 75176 pin-out
  • Extended temperature range RS-485/422 networks
  • Oil exploration / Down-hole drilling
  • Process control and factory automation
  • EMI emission-sensitive avionics
  • Industrial field bus networks
  • Networks requiring extended common-mode range
  • Miniature Munitions Stores Interface (MMSI / EBR-1553)

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