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LTC690 Datasheet Microprocessor Supervisory Circuits

Manufacturer: Linear Technology (now Analog Devices)

General Description

The LTC®690 family, LTC690/LTC691/LTC694/LTC695, provides plete power supply monitoring and battery control functions for microprocessor reset, battery backup, CMOS RAM write protection, power failure warning and watchdog timing.

A precise internal voltage reference and parator circuit monitor the power supply line.

When an out-of-tolerance condition occurs, the reset outputs are forced to active states and the chip enable output unconditionally write-protects external memory.

Key Features

  • n Guaranteed Reset Assertion at VCC = 1V n 1.5mA Maximum Supply Current n Fast (35ns Max) Onboard Gating of RAM Chip Enable Signals n SO-8 and S16 Packaging n 4.65V Precision Voltage Monitor n Power OK/Reset Time Delay: 50ms, 200ms or Adjustable n Minimum External Component Count n 1µA Maximum Standby Current n Voltage Monitor for Power-Fail or Low Battery Warning n Thermal Limiting n Performance Specified Over Temperature n Superior Upgrade for MAX690 Family.

Similar Datasheet

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More Datasheets from Linear Technology (now Analog Devices)

Part Number Description
LTC6900 1kHz to 20MHz Resistor Set SOT-23 Oscillator
LTC6902 Multiphase Oscillator
LTC6903 1kHz - 68MHz Serial Port Programmable Oscillator
LTC6904 (LTC6903 / LTC6904) 1kHz - 68MHz Serial Port Programmable Oscillator
LTC6905 17MHz to 170MHz Resistor Set SOT-23 Oscillator
LTC6905-100 Fixed Frequency SOT-23 Oscillator
LTC6905-133 Fixed Frequency SOT-23 Oscillator
LTC6905-80 Fixed Frequency SOT-23 Oscillator
LTC6905-96 Fixed Frequency SOT-23 Oscillator
LTC6906 Micropower

LTC690 Distributor