ISO808ATR

ISO808ATR is a galvanic isolated 8- channel driver featuring a low supply current. Each driver contains 2 independent galvanic isolated voltage domains (VCC and VDD for the process and control logic stages, respectively). The IC is intended for driving any kind of load with one side connected to ground. The control logic stage features an 8bit output status register (where the MCU sets the ON/OFF status of the output channels in the process stage), daisy chaining is allowed. The two stages communicate through the galvanic isolation channel by an ST proprietary protocol. Active channel current limitation (OVL) combined with thermal shutdown (OVT), independent for each channel, protects the device against overload. Applications include programmable logic control, industrial PC peripheral input/output, numerical control machines, drivers for all type of loads (resistive, capacitive, inductive).

• Low process and logic sides supply current, under-voltage shut down with auto restart and hysteresis
• Logic side 5V and 3.3V TTL/CMOS and MCU compatible I/Os, logic side SPI interface
• Common output enable/disable pin, reset function for IC outputs disable
• High common mode transient immunity, case over-temperature protection
• Per-channel over-temperature protection with thermal independence of separate channels
• Over-voltage protection (VCC clamping), loss of GND and VCC protections
• Common fault open drain diagnostic, VCC power good open drain diagnostic for 24V applications
• Designed to meet IEC 61000-4-2, IEC 61000- 4-4, IEC 61000-4-5 and IEC 61000-4-8
• UL1577 and UL508 certified, safety limits according to IEC 60747-17 (former VDE 0884-11)
• PowerSO-36 package, operating temperature range from -40°C to +125°C