DS1831A View Datasheet(PDF) - Maxim Integrated
Part Name
Description
MFG CO.
DS1831A Datasheet PDF : 14 Pages
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CAPACITANCE
PARAMETER
Input Capacitance
Input Capacitance
SYMBOL
CIN
COUT
MAX
5
7
UNITS
pF
pF
DS1831/A/B
(tA = +25°C)
NOTES
AC ELECTRICAL CHARACTERISTICS
(-40°C to 85°C; IN3.3V, IN5V = 1.0V to 5.5V)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
RESET Active Time (TD=Low)
tRST
10
16
20
ms
5
RESET Active Time (TD=Float)
tRST
100
160
200
ms
5
RESET Active Time (TD=High)
tRST
1000 1600
2000
ms
5
VCC Detect to RST
tRPU
See RESET Active Time
ms
5
VCC Detect to RST
tRPD
2
10
ms
6
VIN Detect to NMI
tIPD
2
10
ms
6
NMI Active Time
tNMI
20
ms
PBRST = VIL
tPB
20
ms
PBRST Stable Low to Reset
Active
tPDLY
50
ms
Watchdog Timeout (TD(WD)=Low)
tTD
10
16
20
ms
Watchdog Timeout (TDWD=Float)
tTD
100
160
200
ms
Watchdog Timeout (TDWD=High)
tTD
1000 1600
2000
ms
ST Pulse Width
tST
10
ns
Vin Slew Rate (V INTP(MAX) to V
INTP(MIN))
tF
300
ms
Vin Slew Rate (V INTP(MAX) to V
INTP(MIN))
tR
0
ns
NOTES:
1) All voltages are referenced to ground.
2) All Pushbutton inputs are internally pulled to the associated Supply IN input or the greatest Supply IN
input for the MPBRST with an internal Impedance of 100kW.
3) Measured with outputs open and IN3.3V or IN5V £ 5.5V
4) Measured with outputs open and IN3.3V or IN5V £ 3.6V.
5) Measured using tR = 5µs
6) Noise immunity - pulses <2µs at a trip level will not cause a RST or NMI .
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