AF54RHC544

Radiation Hardened 5-Channel Schmitt Level Translator

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AF54RHC544

Datasheets

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AF54RHC544 Block
AF54RHC544 Block

Product Overview

The AF54RHC544 is a radiation-hardened by design 5-channel level translator with 3-state outputs that is ideally suited for space, medical imaging and other applications demanding radiation tolerance and high reliability. It is fabricated in a 180 nm CMOS process utilizing proprietary radiation-hardening techniques, delivering high resiliency to single-event effects (SEE) and to a total ionizing dose (TID) to 300 krad (Si).

This device is a member of the Apogee Semiconductor AF54RHC logic family. All members of this family operate across a full 1.65 V to 5.5 V range providing the system designer flexibility in logic-level interfaces. The AF54RHC544 can operate across this range on both of its supply voltage inputs, VCCA and VCCY.

The AF54RHC544 features true Schmitt triggers on each of its input buffers, providing hysteresis to accommodate slow-rising or noisy input signals without any input rise or fall time requirements. An output enable control pin allows the outputs to be placed in a high impedance (high-Z) state, simplifying usage in applications with shared busses or mixed power domains. Additionally, the outputs are placed in high-Z when VCCA is not present, ensuring that no loading or leakage paths are experienced at the output nodes when the input rail is not powered.

Zero-power penalty™ cold-sparing is supported, along with Class 2 ESD protection on all inputs and outputs. A proprietary output stage and robust power-on reset (POR) circuit allow the AF54RHC544 to be cold-spared in any redundant configuration with no static power loss on any pad of the device. The redundant output stage also features a high drive capability with low static power loss.

The AF54RHC544 also features a triple-redundant design throughout its entire circuitry, which allows it to be immune to single-event transients (SET) without requiring additional redundant devices.

  • 1.65 VDC to 5 VDC operation
  • Inputs tolerant up to 5.5 VDC at any VCC
  • Provides logic-level down translation to VCC
  • Extended operating temperature range (-55°C to +125°C)
  • Proprietary cold-sparing capability with zero static power penalty
  • Built-in triple redundancy for enhanced reliability
  • Internal low-loss power-on reset (POR) circuitry ensures reliable power up and power down responses during hot plug and cold sparing operations
  • Class 2 ESD protection (4000 V HBM, 500 V CDM)
  • TID resilience of 30 krad (Si) or 300 krad (Si)
  • SEL resilient up to LET 80 MeV-cm2/mg
  • LEO Constellations
  • Small satellites
  • Medical Imaging

Order

Part NumberPedigreePackagePinsBurn-InLead FinishTID kRad (Si)SEL MeV/mg/cm2RFQPurchase
AF54RHC544ELT-WEvaluationTSSOP14NoSnPb30080Contact UsContact Us
AF54RHC544ALT-RFlightTSSOP14YesSnPb30080Contact UsContact Us

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