TO-99-8 metal can — hermetic through-hole comparator for harsh environments
The Texas Instruments LM111H/NOPB is a general-purpose voltage comparator in a TO-99-8 metal can package, designed for through-hole mounting. The single-element comparator accepts a wide supply range of 5V to 36V single supply or ±2.5V to ±18V dual supplies, giving flexibility across different power rail architectures. Output types include DTL, MOS, open-collector, open-emitter, RTL, and TTL, allowing direct interface with various logic families without extra level translation.
Military temperature grade — what it means for deployment
The hermetic TO-99-8 metal can provides protection against moisture, corrosion, and mechanical stress — a key requirement for sealed avionics modules, satellite payloads, and downhole tools that cannot tolerate conformal-coat failures or plastic package cracking.
Supply range and input characteristics
With a supply range spanning 5V to 36V (single) or ±2.5V to ±18V (dual), the LM111H/NOPB can be dropped into existing ±15V analog rails or 5V/12V/24V digital systems without a dedicated regulator. Maximum quiescent current of 6mA keeps the power budget predictable. Input bias current maxes at 0.1µA at ±15V, preserving accuracy in high-impedance sensing circuits like thermocouple comparators or threshold detectors.