MB3771PF-G-BND-JNE1 데이터 시트보기 (PDF) - Fujitsu

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MB3771PF-G-BND-JNE1

BIPOLAR Power Supply Monitor

Fujitsu 

MB3771

6. 5 V Power Supply Monitor with forced RESET input (VCC = 5 V)

RESIN is an TTL compatible input.

RESIN

VCC

CT

MB3771

1

8

2

7

3

6

4

5

RESET

Logic Circuit

7. 5 V Power Supply Monitor with Non-inverted RESET

In this case, Comparator C is used to invert RESET signal. OUTC is an open-collector output.

RL is used an a pull-up resistor.

VCC

RL: 10 kΩ

CT

RESET

MB3771

1

8

2

7

3

6

4

5

8. Supply Voltage Monitoring with Delayed Trigger

When the voltage shown in the diagram below is applied at VCC, the minimum value of the input pulse width is

increased to 40 µs (when C1 = 1000 pF).

The formula for calculating the minimum value of the input pulse width [TPI] is:

TPI [µs] =: 4 × 10-2 × C1 [pF]

TP

VCC 5 V

4V

MB3771

1

8

RESET

2

7

CT

3

6

4

5

C1

10

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