LM293D屬于集成電路（IC）的比較器。由安森美半導體公司制造生產的LM293D比較器邏輯比較器系列產品用于根據(jù)以數(shù)字格式表示的信息比較結果來生成輸出；身份型比較器指示兩個輸入是否相同，幅度型比較器還指示兩個輸入不相同時哪個較大。它們不同于比較兩個模擬輸入幅度的器件，后者稱為線性比較器且單獨分類。

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.

特性 Features

1. Wide Single?Supply Range: 2.0 Vdc to 36 Vdc

2. Split?Supply Range: ±1.0 Vdc to ±18 Vdc

3. Very Low Current Drain Independent of Supply Voltage: 0.4 mA

4. Low Input Bias Current: 25 nA

5. Low Input Offset Current: 5.0 nA

6.Low Input Offset Voltage: 5.0 mV (max) LM293/393