MXD1810 Maxim, MXD1810 Datasheet - Page 7

• Manufacturer Part Number: MXD1810
• Description: Low-Power UP Reset Circuits in 3-Pin
• Manufacturer: Maxim

MXD1817 applications where RESET must be valid to
V
V
mum operating voltage (Figure 9).
The MXD1811/MXD1813/MXD1816/MXD1818 have
open-drain, active-low outputs with a pullup resistor
included internal to the devices. While using these
devices RESET will most likely not maintain an active
Figure 4. Power-Up Reset Timing Diagram
Figure 6. Manual Reset Timing Diagram
CC
CC
RESET
RESET
V
CC
= 0, a 100kΩ pullup resistor between RESET and
holds RESET high when V
PUSH BUTTON
V
CC(MIN)
EXTERNAL
RESET
V
CC
_______________________________________________________________________________________
V
TH
t
t
RP
(OPEN)
(OPEN)
RP
Low-Power µP Reset Circuits in 3-Pin
CC
falls below the mini-
t
PBRST
(CLOSED)
SWITCH BOUNCE
condition when the supply voltage drops below the
minimum V
the pullup resistor and the reduced sinking capability of
the open-drain output. Therefore, these devices are not
recommended for applications where the RESET pin is
required to be valid at V
Figure 5. Push-Button Manual Reset
V
CC
MXD1813
MXD1818
CC
, but will drift to a nonactive level due to
V
GND
CC
t
PBRST
CC
SC70/SOT23
= 0.
RESET
RESET
MANUAL
RESET
7