DS1831C View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated
Part Name
Description
MFG CO.
'DS1831C' PDF : 14 Pages View PDF
CAPACITANCE
PARAMETER
Input Capacitance
Input Capacitance
SYMBOL
CIN
COUT
MAX
5
7
UNITS
pF
pF
DS1831C/D/E
(tA = 25°C)
NOTES
AC ELECTRICAL CHARACTERISTICS (-40° to 85°C, VCC = 1.0V TO 5.5V)
PARAMETER
SYMBOL MIN TYP MAX UNITS NOTES
RESET Active Time (TD=Low)
tRST
10
16
20
ms
8
RESET Active Time (TD=Float)
tRST
100
160
200
ms
8
RESET Active Time (TD=High)
tRST
1000 1600
2000
ms
8
VCC Detect to RST
tRPU
See RESET Active Time
ms
8
VCC Detect to RST
tRPD
2
10
µs
9
VIN Detect to NMI
tIPD
2
10
µs
9
NMI Active Time
tNMI
20
µs
PBRST = VIL
tPB
20
µs
PBRST Stable Low to Reset
Active
tPDLY
50
µs
Watchdog Timeout (TD(WD)=Low)
tTD
Watchdog Timeout (TDWD=Float)
tTD
Watchdog Timeout (TDWD=High)
tTD
ST Pulse Width
tST
Vin Slew Rate (V INTP(MAX) to V
INTP(MIN))
tF
Vin Slew Rate (V INTP(MAX) to V
INTP(MIN))
tR
10
16
20
ms
100
160
200
ms
1000 1600
2000
ms
10
ns
300
µs
0
ns
NOTES:
1. All voltages are referenced to ground.
2. Measured with both IN3.3V & IN2.5V ≥ 2.7V.
3. Measured with both IN3.3V & IN2.5V ≤ 2.7V.
4. 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 100 kΩ.
5. All outputs are Open Drain and output IOH would be determined by the external pull-up resistor.
6. Measured with outputs open and IN3.3V or IN2.5V ≤ 5.5V.
7. Measured with outputs open and IN3.3V or IN2.5V ≤ 3.6V.
8. Measured using tR = 5 µs.
9. Noise immunity - pulses <2 µs at a trip level will not cause a RST or NMI .
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