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SP730EK-4.375/TR Datasheet

  • SP730EK-4.375/TR

  • Microprocessor Supervisory Circuit with Pull Up Resistor

  • 7頁(yè)

  • SIPEX

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SP730
Microprocessor Supervisory
Circuit with Pull Up Resistor
FEATURES
鈻?/div>
Holds Microcontroller in Reset
鈻?/div>
Reset Microcontroller during power loss
鈻?/div>
4.375 Voltage Trip Point
鈻?/div>
Active Low RESET Pin
鈻?/div>
Internal Pull-up Resistor
鈻?/div>
Holds RESET for 350ms (typical)
鈻?/div>
RESET valid down to V
DD
1.0V
鈻?/div>
45碌A(chǔ) Typical Operating Current
鈻?/div>
Offered in a 3 Pin SOT-23 Package
APPLICATIONS
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Portable Electronic Devices
鈻?/div>
Electrical Power Meter
鈻?/div>
Computer System Board
鈻?/div>
Modem
GND
SP730
3 Pin SOT-23
RESET
V
DD
Now Available in Lead Free Packaging
DESCRIPTION
The SP730 is a voltage supervisory device designed to keep a microcontroller in reset until the
system voltage has reached the proper level and stabilized. It also operates as protection from
brown-out conditions when the supply voltage drops below a safe operating level. The SP730
has an internal 5k pull-up resistor. The device has an active low RESET pin and will assert the
RESET signal whenever the voltage on the V
DD
pin is below the trip-point voltage. The part is
available in a small 3 pin SOT-23 package. Contact factory for other trip voltage options.
TYPICAL APPLICATION CIRCUIT
VDD
Microcontroller
SP730
VDD
GND
RESET
Bypass
Capacitor
VDD
MCLR
or
RESET
GND
Date: 6/14/04
SP730 Microprocessor Supervisory Circuit
漏 Copyright 2004 Sipex Corporation
1

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