Datasheet

DS1831C/D/E
14 of 15
CAPACITANCE (t
A
= +25°C)
PARAMETER SYMBOL MAX UNITS NOTES
Input Capacitance C
IN
5pF
Input Capacitance C
OUT
7pF
AC ELECTRICAL CHARACTERISTICS
(-40° to 85°C; IN
2.5V
, IN
3.3V
= 1.0V to 5.5V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
RESET Active Time (TD=Low) t
RST
10 16 20 ms 6
RESET Active Time (TD=Float) t
RST
100 160 200 ms 6
RESET Active Time (TD=High) t
RST
1000 1600 2000 ms 6
V
CC
Detect to RST
t
RPU
See RESET Active Time ms 6
V
CC
Detect to RST
t
RPD
210
ms
7
VIN Detect to NMI
t
IPD
210
ms
7
NMI Active Time t
NMI
20
ms
PBRST = V
IL
t
PB
20
ms
PBRST Stable Low to Reset
Active
t
PDLY
50
ms
Watchdog Timeout (TD
(WD)
=Low) t
TD
10 16 20 ms
Watchdog Timeout (TD
WD
=Float) t
TD
100 160 200 ms
Watchdog Timeout (TD
WD
=High) t
TD
1000 1600 2000 ms
ST Pulse Width t
ST
10 ns
V
in
Slew Rate (V
INTP(MAX)
to V
INTP(MIN)
)
t
F
300
ms
V
in
Slew Rate (V
INTP(MAX)
to V
INTP(MIN)
)
t
R
0ns
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) All outputs are Open Drain and output I
OH
would be determined by the external pull-up resistor.
4) Measured with outputs open and IN
3.3V
or IN
2.5V
£ 5.5V.
5) Measured with outputs open and IN
3.3V
or IN
2.5V
£ 3.6V.
6) Measured using t
R
= 5µs.
7) Noise immunity - pulses <2µs at a trip level will not cause a RST or NMI .