GENERAL DESCRIPTION
The HI-8425 is a combined 8-channel discrete-to-digital sensor and quad low side driver fabricated with Silicon-onInsulator (SOI) technology for robust latch-up free operation. Sense detection can either be GND/Open or Supply/Open as configured by the SNSE_SEL pin. Supply/Open sensing is also referred to as 28V/Open sensing. The sensing circuit window comparator thresholds can be fixed at the internal programmed values or can be set externally at the HI_SET and LO_SET pins, as selected by the pin. The digital SENSE outputs can be tristated by taking the pin high. THS_SEL OE

FEATURES
• Robust CMOS Silicon-on-Insulator (SOI) technology
• 8-channel Selectable Sense Operation, GND/Open
   or Supply/Open
• Selectable Thresholds and Hysteresis
• Sense Detection Range 3V to 22V
• Logic Operation from 3.0V to 5.5V
• Lightning Protected Sense Inputs
• Airbus ABD0100H compliant
• 4 Low-Side 200 mA drivers
• 4.5 Ohm On Resistance
• Over-Current Fault Detection Signaled by Logic Output
• Max Power Dissipation Automatically Limited by
   Fault Protection
• Diode Clamps for Discharging Inductive Loads

APPLICATIONS
• Avionics Discrete to Digital Sensing
• Relay Driver
• Lamp driver
• Discrete Signaling