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Part Number: G693

 

 

 

 

Description: The G692/G693 are microprocessor (µP) supervisory circuits used to monitor the power suppl...


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G693 General Description


The G692/G693 are microprocessor (µP) supervisory  circuits used to monitor the power supplies in µP and  digital systems. They provide excellent circuit reliability
and low cost by eliminating external components and  adjustments when used with +5V, +3.3V, +3.0V- pow- ered circuits. The G692/G693 also provide a de-
bounced manual reset input.

These circuits perform a single function: they assert a  reset signal whenever the VCC supply voltage declines  below a preset threshold, keeping it asserted for at
least 140ms after VCC has risen above the reset  threshold. Reset thresholds suitable for operation with  a variety of supply voltages are available.

The G693L has an open-drain output stage, while the  G692 have push-pull outputs. The G693L's open-drain  RESET   output requires a pull-up resistor that can be  connected to a voltage higher than VCC. The G692L  have an active-low  RESET   output, while the G692H  has an active-high RESET output. The reset com- parator is designed to ignore fast transients on VCC,  and the outputs are guaranteed to be in the correct  logic state for VCC down to 1V.

Low supply current makes the G692/G693 ideal for  use in portable equipment. The G692/G693 are avail-able in a 4-pin SOT143 packages.

G693 Maximum Ratings

Terminal Voltage (with respect to GND)
VCC............................................................0.3V to +6.0V
RESET,RESET (push-pull)................-0.3V to (VCC + 0.3V) 
RESET (open drain)...................................-0.3V to +6.0V
Input Current, VCC .................................................20mA
Output Current, RESET,  RESET ..............................20mA
Continuous Power Dissipation (TA = +70)
SOT 143 (derate 4mW/ above +70)................320mW
Operating Temperature Range .................-40 to +105
Storage Temperature Range......................-65 to +150
Lead Temperature (soldering, 10s) .........................+300

Stresses beyond those listed under "Absolute Maximum Ratings" may cause p'ermanent damage to the device. These are stress rat- ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of  the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

G693 Features

·Precision Monitoring of +3V, +3.3V, and +5V  Power-Supply Voltages
·Fully Specified Over Temperature
·Available in Three Output Configurations
   Push-Pull  RESET Output (G692L)
   Push-Pull RESET Output (G692H)
   Open-Drain  RESET Output (G693L)
·140ms min Power-On Reset Pulse Width
·5µA Supply Current
·Guaranteed Reset Valid to VCC = +1V
·Power Supply Transient Immunity
·No External Components
·Manual Reset Input
·4-Pin SOT143 Package

G693 Typical Application

·Computers
·Controllers
·Intelligent Instruments
·Critical µP and µC Power Monitoring
·Portable / Battery-Powered Equipment
·Automotive

G693 Connection Diagram

G693 Connection Diagram

G693 datasheet

G693
PDF/DataSheet Download

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