GENERAL DESCRIPTION
The HI-8425 is a combined 8-channel discrete-to-digital sensor and quad low side driver fabricated with Silicon-on Insulator (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 THS_SEL pin. The digital SENSE outputs can be tristated by taking the OE pin high.

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