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DEI1198-TMS-G

DEI1198-TMS-G

DEI1198 is an eight-channel parallel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses eight GND/OPEN discrete signals of the type commonly found in avionic systems and converts them to logic data. The discrete data is read from the device via a parallel tri-state bus.


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Features

  • Eight discrete inputs
  • Senses GND/OPEN discrete signals.
  • Meets input threshold and hysteresis requirements specified per AirBus ABD0100H specification.
  • Thresholds: 4.5 V / 10.5 V, Hysteresis: 3 V
  • ~1 mA DIN source/sink current to prevent dry relay contacts.
  • Internal isolation diode.
  • Uses an external 3 kΩ resistor on the inputs to implement lightning transient immunity of 1600 V and higher. i.e.: DO160E, Section 22, Levels 4 and 5.
  • Inputs protected from Lightning Induced Transients per DO160, Section 22, Cat A3 and B3 plus waveform 5A to 500 V.
  • Parallel I/O interface
  • TTL/CMOS compatible inputs and Tristate outputs
  • CLK & /OE control inputs and outputs
  • Logic Supply Voltage (VCC): 3.3 V ±%
  • Analog Supply Voltage (VDD): 12.0 V to 16.5 V
  • Package Options
  • 24 Lead TSSOP EP Thermally Enhanced
  • Pin compatible with DEI1166/67

Attributes

temp range: -55°C - 125°C
product package type: 24 TSSOP EP G
burn in:
channels: 8
lightning protection:
Years to EOL: 10
errata sheets: ES-MW-01198-02-A.pdf
tri state outputs:
fused outputs:
Analog PSU: 12-16.5
Digital PSU: 3.3
ABD0100:
discrete input: OPEN/GND
output type: serial
prog input threshold:
package description: 24 Pin Thin Shrink SO Package w/ Exposed Pad
package type: Surface Mount
JEDEC: MO-153-AD
RoHS:
Product Status: Active
PCN Links:CN-MW-01198-01-A.pdfCN-MW-01198-02-A.pdfCN-MW-10068-01-B.pdfCN-MW-01198-03-A.pdf

Functional Description DEI1198 is an eight-channel parallel discrete-to-digital interface IC implemented in an HV DIMOS technology. It senses eight GND/OPEN discrete signals of the type commonly found in avionic systems and converts them to logic data. The discrete data is read from the device via a parallel tri-state bus. The discrete input circuits are designed to achieve a high level of lightning transient immunity. The application design requires a series 3 kΩ resistor on each discrete input to achieve DO160 Level 3 and WF5A 500 V pin injection immunity. Higher immunity levels can be achieved (i.e. Level 5) with the addition of a TVS between the resistor and the input pin.

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