Datasheet

DS1832
7 of 7
AC ELECTRICAL CHARACTERISTICS (-40°C to +85°C; V
CC
=1.2V to 5.5V)
PARAMETER SYMBOL MIN TYP MAX UNITS NOTES
PBRST = V
IL
t
PB
20 ms
RESET Active Time t
RST
250 610 1000 ms
ST Pulse Width
t
ST
20 ns 6, 7
V
CC
Detect to RST and RST
t
RPD
58
µs
8
V
CC
Slew Rate t
F
20
µs
V
CC
Detect to RST and RST
t
RPU
250 610 1000 ms 9
V
CC
Slew Rate t
R
0ns
PBRST Stable Low to RST and RST
t
PDLY
20 ms
NOTES:
1. All voltages referenced to ground.
2. PBRST is internally pulled up to V
CC
with an internal impedance of 40 kΩ=typical.
3. Measured with V
CC
≥ 2.7V.
4. Measured with V
CC
< 2.7V.
5. Measured with outputs open, V
CC
≤ 3.6 volts, and all inputs at V
CC
or Ground.
6. Must not exceed t
TD
minimum.
7. The Watchdog cannot be disabled it must be strobed to avoid resets.
8. Noise immunity - Pulses < 2 µs at V
CCTP
minimum will not cause a reset.
9. t
R
= 5 µs.
MARKING INFORMATION:
8-pin DIP - “DS1832”
8-pin SOIC - “DS1832”
8-pin - µ-SOP - “1832”