Wide supply and temperature envelope
Rated for -25°C to 85°C operating temperature, the LM239DTBR2G fits into industrial control cabinets, HVAC panels, and outdoor telecom enclosures where the ambient stays within this band. Quiescent current maxes at 2.5 mA across all four channels, so the comparator section adds under 3 mA to the system power budget. Each output can sink 16 mA at 5 V, and the output stage is configurable as CMOS, open-collector, or TTL logic levels. Open-collector outputs let multiple comparators wire-OR on a shared pull-up, which is the standard topology for fault-summary or over-temperature latch circuits.
Compliance and storage
The LM239DTBR2G is ROHS3 Compliant per the manufacturer's declaration. Store the reels in a dry cabinet if the MSL level is not confirmed; TSSOP packages typically carry MSL 1 or 2, but the evidence does not state the specific level for this date code.