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R3130N ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 3 Page - RICOH electronics devices division

๋ถ€ํ’ˆ๋ช… R3130N
์ƒ์„ธ๋‚ด์šฉ  Low Voltage Detector with Built-in Delay Circuit
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์ œ์กฐ์‚ฌ  RICOH [RICOH electronics devices division]
ํ™ˆํŽ˜์ด์ง€  http://www.ricoh.com
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R3130N ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 3 Page - RICOH electronics devices division

 
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R3130N/R3131N
3
TIMING CHART
VSS
Tdelay
Supply
Voltage
(VDD)
Output Voltage
Detector
Threshold
Minimum Operating
Voltage
VDET
VSS
VSS
Tdelay
Supply
Voltage
(VDD)
Output Voltage
Detector
Threshold
Minimum Operating
Voltage
VDET
VSS
R3130N Operation Diagram
R3131N Operation Diagram
โ€ข Output Delay Operation
Output Delay Time, or Tdelay is specified as follows:
1. In the case of Nch open drain output:
The time interval from rising edge of VDD pulse (1.0V
โ†’(VDET)+1.0V) to the time at which the output reaches
2.5V under the condition that the output pin (OUT) is pulled up to 5V through a 470k
โ„ฆ resistor.
2. In the case of CMOS output
The time interval from rising edge of VDD pulse (1.0V
โ†’(VDET)+1.0V) to the time at which the output reaches
VDD/2.
VDET+1.0V
Input Voltage
Output Voltage
1.0V
5.0V
2.5V
GND
GND
Trst
Tdelay
(VDD)
VDET+1.0V
Input Voltage
Output Voltage
1.0V
VDET+1.0V
(VDET+1.0V)/2
GND
GND
Trst
Tdelay
(VDD)
Nch Open Drain Output
CMOS Output


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