DEI1041-SES-G

The DEI1041 is a BiCMOS device which contains one ARINC 429 differential line receiver. It translates incoming ARINC 429 data bus signals (tri-level RZ bipolar differential modulation) to a pair of TTL/CMOS logic outputs. It meets the requirements of the ARINC 429 Digital Information Transfer Standard.

The device is designed to operate in a high noise environment. Inputs are accepted over a ±20 V common mode voltage range and the receivers provide over 2 V of hysteresis. Circuit speed is optimized to reject high frequency transients.

Features

• ARINC 429 to TTL/CMOS logic line receiver
• Drop-in replacement for HI-8588 and HI-8588-10
• Operates from single 5 V ±10% or 3.3 V ±10% power supply
• ARINC inputs internally protected to lightning requirements of DO-160 Level 3 pin injection
• ARINC inputs withstand inadvertent short to 115 Vac on inputs
• Operates in high noise environment
  • Input Common Voltage Range: ± 20 V
  • 2 V minimum Input hysteresis
• Logic level TEST inputs bypass analog inputs.
• High input resistance allows use of external series resistors to support:
  • Lightning protection beyond Level 3
  • Fault isolation
• Package: 8L SOIC

Attributes

Functional Description The DEI1041 is a BiCMOS device which contains one ARINC 429 differential line receiver. It translates incoming ARINC 429 data bus signals (tri-level RZ bipolar differential modulation) to a pair of TTL/CMOS logic outputs. It meets the requirements of the ARINC 429 Digital Information Transfer Standard. The device is designed to operate in a high noise environment. Inputs are accepted over a ±20 V common mode voltage range and the receivers provide over 2 V of hysteresis. Circuit speed is optimized to reject high frequency transients. All ARINC input pins are designed with internal protection from damage due to transients meeting the lightning induced transient requirements of DO-160 Level 3 pin injection. The ARINC inputs may optionally be connected to ARINC bus through external 10 kΩ series resistors. These resistors may be added in combination with transient voltage suppressors to achieve lighting protection beyond the Level A3 limits due to high input impedance. The ARINC input pins are designed with internal protection from damage due to lighting induced transients of DO-160 Level 3 pin injection. The protection incorporates on-chip high value resistors to minimize IR heating and high-voltage dielectric isolation to withstand the voltage transients. Higher protection levels can be achieved with the addition of external TVS devices between the inputs and ground, or alternately, TVS devices in combination with series current limiting resistors between the ARINC bus and the IC/TVS node. The series resistors reduce the power requirement and size of the TVS. Resistor values up to 10 kΩ are feasible. The ARINC inputs withstand inadvertent short to 115 Vac aircraft power without sustaining damage. The DEI1041 provides logic level TEST inputs for built in system test. They force the receiver outputs to the specified ZERO, ONE or NULL state. The ARINC inputs are ignored when the device is in test mode.