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Part Number: G671
Description: The G670/G671 are microprocessor (P) supervisory circuits used to monitor the power supplies in P and ...
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G671
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DataSheet
General Description
G671 General Description
The G670/G671 are microprocessor (P) supervisory circuits used to monitor the power supplies in P 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- powered circuits.
These circuits perform a single function: they assert a reset signal whenever the VCC supply voltage declines below a preset threshold. Reset thresholds suitable for operation with a variety of supply voltages are available. The G671L has an open-drain output stage, while the G670 have push-pull outputs. The G671L's open-drain SET output requires a pull-up resistor that can be connected to a voltage higher than VCC. The G670L have an active-low RESET output, while the G670H has an active-high RESET output. The reset comparator 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 G670.
G671 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-23 (derate 4mW/ above +70) . . . .. . 100mW
SOT-89 (derate 4mW/ above +70). . . .. . .100mW
TO-92 (derate 4mW/ above +70). . . .. . . . 100mW
Operating Temperature Range. . . .. . .-40 to +105
Storage Temperature Range. . . .. . . ..-65 to +150
Reflow Temperature (soldering, 10sec) . . . .. . .+260
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device.
These are stress ratings 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.
G671 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 (G670L) Push-Pull RESET Output (G670H) Open-DrainRESET Output (G671L)
`2ms max Power-On Reset Pulse Width
`14A Supply Current
`Guaranteed Reset Valid to VCC = +1V
`Power Supply Transient Immunity
`No External Components
`3-Pin SOT-23,TO-92 and SOT-89 Packages
`2% Threshold Accuracy
Power-Supply Voltages
`Fully Specified Over Temperature
`Available in Three Output Configurations Push-Pull RESET Output (G670L) Push-Pull RESET Output (G670H) Open-DrainRESET Output (G671L)
`2ms max Power-On Reset Pulse Width
`14A Supply Current
`Guaranteed Reset Valid to VCC = +1V
`Power Supply Transient Immunity
`No External Components
`3-Pin SOT-23,TO-92 and SOT-89 Packages
`2% Threshold Accuracy
G671 Typical Application
`Computers
`Controllers
`Intelligent Instruments
`Critical P and C Power Monitoring
`Portable / Battery-Powered Equipment
`Automotive
`Controllers
`Intelligent Instruments
`Critical P and C Power Monitoring
`Portable / Battery-Powered Equipment
`Automotive
G671 Connection Diagram
G6742
PDF/DataSheet Download
- Datasheet: G6742
- File Size: 344138 KB
- Manufacturer: HAMAMATSU [Hamamatsu Corporation]
- Click here to Download
- ·G6742-003
- HAMAMATSU [Hamamatsu Corporation]
- InGaAs PIN photodiode
- 344138 KB
- ·G6742-01
- HAMAMATSU [Hamamatsu Corporation]
- InGaAs PIN photodiode
- 344138 KB
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