LM311B

NOTES:
1. This rating applies for ±15V supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is equal to the negative supply voltage or 30V below the positive supply, whichever is less.
2. Derate above 25°C, at the following rates: F package at 6.4mW/°C; N package at 9.5mW/°C; D package at 6.2m/W°C

The LM311B series are voltage comparators that have input currents approximately a hundred times lower than devices like the mA710.They are designed to operate over a wider range of supply voltages;from standard ±15V op amp supplies down to a single 3V supply.Their output is compatible with RTL, DTL, and TTL as well as MOS circuits. Further, they can drive lamps or relays, switching voltages up to 50V at currents as high as 50mA.

Both the inputs and the outputs of the LM311B series can be isolated from system ground, and the output can drive loads referred to ground, the positive supply, or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire-ORed.

Although slower than the mA710 (200ns response time vs 40ns), the devices are also much less prone to spurious oscillations. The LM311B series has the same pin configuration as the A710 series