LM397

LM397 Single General Purpose Voltage Comparator August 2006 LM397 Single General Purpose Voltage Comparator General Description The LM397 is a single voltage comparator with an input common mode that includes ground. The LM397 is designed to operate from a single 5V to 30V power supply or a split power supply. Its low supply current is virtually independent of the magnitude of the supply voltage. The LM397 features an open collector output stage. This allows the connection of an external resistor at the output. The output can directly interface with TTL, CMOS and other logic levels, by tying the resistor to different voltage levels (level translator). The LM397 is available in space saving 5-Pin SOT23 package and pin compatible to TI’s TL331, single differential comparator. Features (TA = 25˚C. Typical values unless otherwise specified). n 5-Pin SOT23 package n Industrial operating range −40˚C to +85˚C n Single or dual power supplies n Wide supply voltage range 5V to 30V n Low supply current 300µA n Low input bias current 7nA ± 1nA n Low input offset current ± 2mV n Low input offset voltage n Response time 440ns (50mV overdrive) n Input common mode voltage 0 to VS - 1.5V Applications n n n n A/D converters Pulse, square wave generators Peak detector Industrial applications Connection Diagram 5-Pin SOT23 Typical Circuit www.DataSheet4U.com 20022108 Top View 20022109 FIGURE 1. Inverting Comparator with Hysteresis Ordering Information Package 5-Pin SOT-23 Part Number...