型号LM397
品牌
分类比较器
描述单路通用电压比较器
相关操作
产品概述

参数

Number of channels 1
Output type Open-collector
Propagation delay time (µs) 0.44
Vs (max) (V) 30
Vs (min) (V) 5
Vos (offset voltage at 25°C) (max) (mV) 7
Iq per channel (typ) (mA) 0.25
Input bias current (±) (max) (nA) 250
Rail-to-rail Out
Rating Catalog
Operating temperature range (°C) -40 to 85
Features Standard comparator
VICR (max) (V) 28.5
VICR (min) (V) 0

封装 | 引脚 | 尺寸

SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8

特性

  • TA = 25°C. Typical Values Unless Otherwise
    Specified.
  • 5-Pin SOT-23 Package
  • Industrial Operating Range −40°C to +85°C
  • Single or Dual Power Supplies
  • Wide Supply Voltage Range 5 V to 30 V
  • Low Supply Current 300 µA
  • Low Input Bias Current 7 nA
  • Low Input Offset Current ±1 nA
  • Low Input Offset Voltage ±2 mV
  • Response Time 440 ns (50-mV Overdrive)
  • Input Common-Mode Voltage 0 to VS – 1.5 V

说明

The LM397 device is a single voltage comparator with an input common mode that includes ground. The LM397 is designed to operate from a single 5-V to 30-V 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 the space-saving 5-Pin SOT-23 package and is pin-compatible to TI’s TL331, a single differential comparator.