DS1831A 查看數據表（PDF） - Maxim Integrated

零件编号

产品描述 (功能)

生产厂家

DS1831A

Multisupply Micromonitor

Maxim Integrated 

TIMING DIAGRAM—5V OR 3.3V PUSHBUTTON RESET Figure 5

tPB

PBRST5V

tPDLY

VIH

(or PBRST3.3V)

VIL

RST5V (or RST3.3V)

tRST

VOH

VIL

DS1831/A/B

OPERATION—PUSHBUTTON STATUS

The DS1831B provides a master pushbutton status open drain output. The PBST output indicates the

status of the most recent reset condition. If the last reset was generated by the master pushbutton input it

would maintain a low condition until cleared by another event (except the master pushbutton) generating

a reset. Once cleared it will remain high until the master pushbutton is pulled low generating a reset

condition. The PBST output is open drain and will require a pull-up resistor on the output to maintain a

valid condition. The value of the pull up resistor is not critical in most cases but must be set low enough

to pull the output to a high state. A common value used is 10kW (see Figure 6).

DS1831B APPLICATION EXAMPLE Figure 6

5V Supply

3.3V Supply

VCC

VSENSE2

VSENSE1

IN5V

RST5V

TOL5V

TD5V

PBRST5V

IN1

IN2

GND

1

16

2

15

3

14

4

13

DS1831B

5

12

6

11

7

10

8

9

IN3.3V

RST3.3V

TOL3.3V

TD3.3V

PBST

NMI1

NMI2

MPBRST

VCC

10 kW

10kW

6 of 14

Share Link: