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双/四/单路、高速、超低功耗、单电源TTL比较器

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主要特征

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主要特征

  • 40ns Propagation Delay
  • 700µA (3.5mW) Supply Current per Comparator
  • Single 4.5V to 5.5V Supply Operation (or ±5V, MAX909 only)
  • Wide Input Range Includes Ground (or -5V, MAX909 only)
  • Low, 500µV Offset Voltage
  • Internal Hysteresis Provides Clean Switching
  • TTL-Compatible Outputs (Complementary on MAX909)
  • Input and Output Short-Circuit Protection
  • Internal Latch (MAX909 only)

应用/用途

  • 电池供电系统
  • 高速A/D转换器
  • 高速采样电路
  • 高速V/F转换器
  • 线接收器
  • 门限检测器/鉴别器
  • 过零检测器

描述

The MAX907/MAX908/MAX909 are dual/quad/single, high-speed, ultra-low-power voltage comparators designed for use in systems powered from a single +5V supply; the MAX909 also accepts dual ±5V supplies. Their 40ns propagation delay (with 5mV input overdrive) is achieved with a power consumption of only 3.5mW per comparator. The wide input common-mode range extends from 200mV below ground (below the negative supply rail for the MAX909) to within 1.5V of the positive supply rail.

Because they are micropower, high-speed comparators that operate from a single +5V supply and include built-in hysteresis, these devices replace a variety of older comparators in a wide range of applications. MAX907/MAX908/MAX909 outputs are TTL-compatible, requiring no external pullup circuitry. All inputs and outputs can be continuously shorted to either supply rail without damage. These easy-to-use comparators incorporate internal hysteresis to ensure clean output switching even when the devices are driven by a slow-moving input signal.

The MAX909 features complementary outputs and an output latch. A separate supply pin for extending the analog input range down to -5V is also provided.

The dual MAX907 and single MAX909 are available in 8-pin DIP and SO packages, and the quad MAX908 is available in 14-pin DIP and SO packages. These comparators are ideal for single +5V-supply applications that require the combination of high speed, precision, and ultra-low power dissipation.

简化框图

MAX907、MAX908:引脚配置 MAX907、MAX908:引脚配置 Zoom icon

Technical Docs

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