LMC7221

LMC7221 www.ti.com SNOS748E – SEPTEMBER 1999 – REVISED MARCH 2013 LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output Check for Samples: LMC7221 FEATURES 1 2 Tiny 5-Pin SOT-23 package saves space Package is less than 1.43 mm thick Ensured specs at 2.7V, 5V, 15V supplies Typical supply current 7 μA at 5V Response time of 4 μs at 5V LMC7221—open drain output Input common-mode range beyond V− and V+ Low input current APPLICATIONS Mixed voltage battery powered products Notebooks and PDAs PCMCIA cards Mobile communications Alarm and security circuits Driving low current LEDs Direct sensor interface DESCRIPTION The LM7221 is a micropower CMOS comparator available in the space saving 5-Pin SOT-23 package. This makes this comparator ideal for space and weight critical designs. The LMC7221 is also available in the 8-Pin SOIC package. The LMC7221 is supplied in two offset voltage grades, 5 mV and 15 mV. The open drain output can be pulled up with a resistor to a voltage which can be higher or lower than the supply voltage—this makes the part useful for mixed voltage systems. For a tiny comparator with a push-pull output, please see the LMC7211 datasheet. Connection Diagram 8-Pin SOIC - Top View 5-Pin SOT-23 - Top View Figure 1. See Package Number D0008A Figure 2. See Package Number DBV0005A These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during...