MB3761_06 데이터 시트보기 (PDF) - Fujitsu

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MB3761_06

ASSP BIPOLAR VOLTAGE DETECTOR

Fujitsu 

MB3761

■ TYPICAL CHARACTERISTICS

DC Characteristics

6

4

2

0

0

1

23

4

5

6

V CC (V)

• Voltage Threshold Levels (VCCL and VCCH) and

Hysteresis Width can be changed by the resistors

(R1 through R4).

R1 + R2 + R3

VCCL =

R3

VTH

R1 (R2 + R3 )

VCCH = VCCL +

R3 R4

VTH

• Power-On Reset Time is provided by the following

approximate equation:

{ tRST

VTH

= -C1 R4 • In 1 - VCC

R1

(1 + R2 + R3 )

• The recommended value of hFE of the external

transistor is from 50 to 200.

• In the case of an instant power fail,

the remaining charge in C1 effects tRST.

• If necessary, the reversed output is provided

on HYS terminal

Response Characteristics

5

V CC (L)

V CC

V CC (H)

0

VO

4.4

t RST

0

≈ 30 ms

10

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