LM393 是雙電壓比較器集成電路。

輸出負載電阻能銜接在可允許電源電壓范圍內的任何電源電壓上，不受 Vcc端電壓值的限制.此輸出能作為一個簡單的對地SPS開路(當不用負載電阻沒被運用)，輸出部分的陷電流被可能得到的驅動和器件的β值所限制.當達到極限電流(16mA)時，輸出晶體管將退出而且輸出電壓將很快上升。

The LM393 series are dual independent precision voltage comparators capable of single or split supply operation. These devices are designed to permit a common mode range-to-ground level with single supply operation. Input offset voltage specifications as low as 2.0 mV make this device an excellent selection for many applications in consumer automotive and industrial electronics.

• Wide Single-Supply Range: 2.0 Vdc to 36 Vdc

• Split-Supply Range: +/-1.0 Vdc to +/-18 Vdc

• Very Low Current Drain Independent of Supply Voltage: 0.4 mA

• Low Input Bias Current: 25 nA

• Low Input Offset Current: 5.0 nA

• Low Input Offset Voltage: 2.0 mV (max) LM393A 5.0 mV (max) LM293/393

• Input Common Mode Range to Ground Level

• Differential Input Voltage Range Equal to Power Supply Voltage

• Output Voltage Compatible with DTL, ECL, TTL, MOS, and CMOS Logic Levels

• ESD Clamps on the Inputs Increase the Ruggedness of the Device without Affecting Performance

該電路的特點如下：

工作溫度范圍:0°C -- +70°C

SVHC(高度關注物質):No SVHC (18-Jun-2010)

器件標號:393

工作電源電壓范圍寬，單電源、雙電源均可工作，單電源： 2～ 36V， 雙電源：±1～±18V；

消耗電流小， ICC=0.4mA；

輸入失調電壓小， VIO=±2mV；

共模輸入電壓范圍寬， VIC=0～VCC-1.5V；

輸出與TTL，DTL，MOS，CMOS 等兼容；

輸出可以用開路集電極連接“或”門；

表面安裝器件:表面安裝