adm811-3tart-reel Analog Devices, Inc., adm811-3tart-reel Datasheet - Page 8

• Manufacturer Part Number: adm811-3tart-reel
• Description: Microprocessors Supervisory Circuit In 4-lead Sot-143, Logic Low Reset Bar Output
• Manufacturer: Analog Devices, Inc.

ADM811/ADM812
INTERFACING TO OTHER DEVICES
OUTPUT
The ADM811/ADM812 are designed to integrate with as many
devices as possible. One feature of the ADM811/ADM812 is the
reset output, which is directly proportional to V
guaranteed only while V
part to be used with both 3 V and 5 V, or any nominal voltage
within the minimum and maximum specifications for V
BENEFITS OF A VERY ACCURATE RESET
THRESHOLD
Because the ADM811/ADM812 can operate effectively even
when there are large degradations of the supply voltages, the
possibility of a malfunction during a power failure is greatly
reduced. Another advantage of the ADM811/ADM812 is its
very accurate internal voltage reference circuit. Combined,
these benefits produce an exceptionally reliable microprocessor
supervisory circuit.
CC
is greater than 1 V). This enables the
CC
(this is
CC
.
Rev. D | Page 8 of 12
ENSURING A VALID RESET/RESET
OUTPUT DOWN TO V
When V
/RESET no longer sinks current. Therefore, a high impedance
CMOS logic input connected to RESET /RESET can drift to
undetermined logic levels. To eliminate this problem, a 100 kΩ
resistor should be connected from RESET /RESET to ground.
Figure 11. Ensuring a Valid RESET Output Down to V
CC
falls below 0.8 V, the ADM811/ADM812’s RESET
ADM811
GND
V
V
CC
CC
CC
RESET
= 0 V
CC
= 0 V