The ARINC 429 Line Drivers convert TTL/CMOS serial input data to ARINC specified amplitudes, and are a direct drop-in replacement for Holt and DEI line drivers.- Low Power Consumption- Drop-in Pin for Pin Replacement for Holt Line Drivers:-- HI-8585-- HI-8586- Drop-in Pin for Pin Replacement for DEI Line Drivers:-- DEI-1070A-- DEI-1071A-- DEI-1072A-- DEI-1073A-- DEI-1074A-- DEI-1075A