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Maxim产品 - MAX977介绍

MAX977 - 单/双路、+3V/+5V双速度比较器，带有自动待机功能

MAX977是Maxim美信半导体公司的一款放大器产品，MAX977是单/双路、+3V/+5V双速度比较器，带有自动待机功能，本站介绍了MAX977的封装应用图解、特点和优点、功能等，并给出了与MAX977相关的Maxim元器件型号供参考。

MAX977 - 单/双路、+3V/+5V双速度比较器，带有自动待机功能 - 放大器 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX975/MAX977 single/dual comparators featurethree different operating modes, and are optimized for+3V and +5V single-supply applications. The operatingmodes are as follows: high speed, high speed withauto-standby, and low power. Propagation delay is 28nsin high-speed mode, while supply current is only 250µA.Supply current is reduced to 3µA in low-power mode.

The auto-standby feature allows the comparator toautomatically change from low-power mode to highspeedmode upon receipt of an input signal. In theabsence of an input signal, the comparator revertsback to low-power mode after an adjustable timeoutperiod. The timeout period for the MAX975 to enterstandby is set by a single capacitor. The dual MAX977features independently adjustable timeout periods foreach comparator using separate capacitors.

The MAX975/MAX977's inputs have a common-modevoltage range of -0.2V to (VCC - 1.2V). The differentialinput voltage range extends rail to rail. The outputs arecapable of rail-to-rail operation without external pull-upcircuitry, making these devices ideal for interface withCMOS/TTL logic. All inputs and outputs can tolerate acontinuous short-circuit fault condition to either rail. Thecomparator's internal hysteresis in high-speed modeensures clean output switching, even with slow-movinginput signals.

The single MAX975 is available in 8-pin SO and 8-pinµMAX® packages, while the dual MAX977 is availablein 14-pin SO and 16-pin QSOP packages.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • Three Operating Modes:
  • High Speed
  • High Speed with Auto-Standby
  • Low Power
  • 28ns Propagation Delay (high-speed mode)
  • 5µA Max Supply Current in Low-Power/Auto-Standby Modes
  • +3V/+5V Single-Supply Operation
  • Rail-to-Rail Outputs
  • Ground-Sensing Input
  • Internal Hysteresis (high-speed mode)
  • Adjustable Timeout Period
  • µMAX Package (MAX975) QSOP-16 Package (MAX977)
    • 热门应用
  • 3V系统
  • 电池供电应用
  • 数字线接收器
  • IR接收器
  • 遥控钥匙
  • 射频ID标记
  • 门限检测器/鉴别器
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