The LM111/211/311/LM311B are low-power precision voltage comparators from Philips Semiconductors. They feature input currents approximately 100 times lower than the µA710 and can operate from a single 3V supply. Their output is compatible with RTL, DTL, and TTL as well as MOS circuits. They can also drive lamps or relays, switching voltages up to 50V at currents as high as 50mA. Both the inputs and the outputs of the LM111 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.
This document is a product specification for the LM111/211/311/ LM311B voltage comparator series from Philips Semiconductors. The devices are designed to operate over a wide range of supply voltages, from standard ±15V op amp supplies down to a single 3V supply (for the LM311B). They feature low input currents, high sensitivity, and outputs compatible with RTL, DTL, TTL, and MOS circuits.
| Maximum input bias current | 150nA (LM311—250nA) |
|---|---|
| Maximum offset current | 20nA (LM311—50nA) |
| Differential input voltage range | ±30V |
| Power consumption | 135mW at ±15V |
| Response time | 200ns |
| Operating ambient temperature range | -55 to +125 °C (LM111) |
The maximum input bias current for the LM311 is 250nA.
Yes, the LM311B is designed to operate from a single 3V supply.
The response time for the LM111 series is 200ns.