DS1706S 查看數據表（PDF） - Dallas Semiconductor -> Maxim Integrated

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DS1706S

3.3V and 5.0V MicroMonitor

Dallas Semiconductor -> Maxim Integrated 

DS1705/DS1706

AC ELECTRICAL CHARACTERISTICS

PARAMETER

SYMBOL MIN

PBRST = VIL

tPB

150

Reset Active Time

tRST

130

ST Pulse Width

tST

10

VCC Detect to RST and RST

tRPD

VCC Slew Rate

tF

20

VCC Detect to RST and RST

tRPU

130

VCC Slew Rate

tR

0

PBRST Stable Low to RST and

RST

tPDLY

Watchdog Timeout

VIN Detect to NMI

tTD

1.0

tIPD

(–40°C to +85°C; VCC=1.2V to 5.5V)

TYP

MAX

UNITS NOTES

ns

205

285

ms

ns

6

5

8

µs

9

µs

205

285

ms

7

ns

250

ns

1.6

2.2

s

8

5

8

µs

9

NOTES:

1. All voltages are referenced to ground.

2. PBRST is internally pulled up to VCC with an internal impedance of 40KΩ typical and the ST input is internally

pulled up to VCC with an internal impedance of 180KΩ typical.

3. VCC  2.4 volts

4. VCC < 2.4 volts

5. Measured with outputs open and all inputs at VCC or ground.

6. Must not exceed tTD minimum.

7. tR = 5 µs

8. Minimum watchdog timeout tested at 2.7 volts for the 3.3 volt devices and 4.5 volts for the 5.0 volt devices.

9. Noise immunity – pulses < 2 µs at VCCTP minimum will not cause a reset.

011296 9/10

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