GENERAL 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.

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