The TLV4H290-SEP and TLV4H390-SEP devices are quad channel Space Grade Enhanced Products, micro-power comparators with push-pull and open-drain outputs and low input offset voltage. Operating down to 1.65V while only consuming only 25µA per channel. The radiation hardened TLVLV4H290-SEP and TLV4390-SEP are designed for low orbit and space applications. An internal power-on reset circuit makes sure that the output remains in a known state during power-up and power-down while fail-safe inputs can tolerate input transients without damage or false outputs.