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DEI1271A-MES-G

The DEI1270A/DEI1271A bipolar integrated circuits are dual line drivers designed to directly drive the ARINC 429 avionics serial digital data bus. The device converts TTL/CMOS serial input data to the tri-level RZ bipolar differential modulation format of the ARINC bus. A TTL/CMOS control input selects the output slew rate for HI (100KBS) and LOW (12.5KBS) speed operation. No external timing capacitors are required. A429 output tri-state capability is enabled by the TS_CTL input.


Features

  • Dual TTL/CMOS to ARINC 429 Line Driver
  • HI/LO Speed Control Pins for Hi (100KBS) or Lo (12.5KBS) speed slew rates
  • °9.5V to °16.5V supplies
  • Drives full ARINC load
  • Output resistor options: 0, 10 or 37.5 Ohms
  • Tristate Output feature
  • Thermally enhanced 5 x 7 mm MLP package
  • The DEI1270A family is an improved version of the popular DEI1270 family

Attributes

temp range: -55 to 85
product package type: 38 5x7 I MLPQ G
burn in:
channels: 2
power supply range: +/-9.5 to +/-16.5
lightning protection:
Years to EOL: 10
output resistance: User Selectable: 0, 10, 37
tri state outputs:
fused outputs:
ABD0100:
package description: 38 Pin 5 X 7 Micro Lead Frame Package - Quad
package type: Surface Mount
package pic: 38L 5x7mm MLP.png
jedec: DS-MW-01270-02
RoHS: MO-220C
product status:
Replacement PN: Active

Functional Description

The DEI1270A/DEI1271A bipolar integrated circuits are dual line drivers designed to directly drive the ARINC 429 avionics serial digital data bus. The device converts TTL/CMOS serial input data to the tri-level RZ bipolar differential modulation format of the ARINC bus. A TTL/CMOS control input selects the output slew rate for HI (100KBS) and LOW (12.5KBS) speed operation. No external timing capacitors are required. A429 output tri-state capability is enabled by the TS_CTL input.

The DEI1270A/1A Line Drivers are an improved version of the popular DEI1270/1 family. They provide:

  • Lower power consumption
  • Excellent waveform fidelity
  • Improved transient immunity. This improvement simplifies the equipment design for lightning and RF immunity requirements.

The Line Driver provides output resistor values and output tri-state capability (see table 1). There are three output resistor options: 0

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