Description

This family of devices consists of four independent precision-voltage comparators with an offset voltage specification as low as 2 mV maximum for LM339A, LM239A and LM139A. Each comparator has been designed specifically to operate from a single power supply over a wide range of voltages. Operation from split power supplies is also possible.

These comparators also have a unique characteristic in that the input common mode voltage range includes ground even though operated from a single power supply voltage.

Features

■ Wide single supply voltage range or dual

supplies for all devices: +2 to +36 V or ±1 V to

±18 V

■ Very low supply current (1.1 mA) independent

of supply voltage

■ Low input bias current: 25 nA typ

■ Low input offset current: ±5 nA typ

■ Low input offset voltage: ±1 mV typ

■ Input common-mode voltage range includes

ground

■ Low output saturation voltage: 250 mV typ;

(ISINK = 4 mA)

■ Differential input voltage range equal to the

supply voltage

■ TTL, DTL, ECL, MOS, CMOS compatible

outputs

LM339属于集成电路（IC） > 比较器。意法半导体（ST）集团制造生产的LM339比较器逻辑比较器系列产品用于根据以数字格式表示的信息比较结果来生成输出；身份型比较器指示两个输入是否相同，幅度型比较器还指示两个输入不相同时哪个较大。它们不同于比较两个模拟输入幅度的器件，后者称为线性比较器且单独分类。