ADM811MARTZ-REEL7 Analog Devices Inc, ADM811MARTZ-REEL7 Datasheet - Page 8

• Manufacturer Part Number: ADM811MARTZ-REEL7
• Description: IC,VOLT DETECTOR,FIXED,+4.38V,CMOS,TO-253LOW,4PIN,PLASTIC
• Manufacturer: Analog Devices Inc
• Type: Simple Reset/Power-On Resetr

Specifications of ADM811MARTZ-REEL7

• Package / Case: SOT-143, SOT-143B, TO-253AA
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Number Of Voltages Monitored: 1
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.38V
• Number Of Elements: 1
• Monitored Voltage 1 (typ): 2.5/3/3.3/5V
• Threshold Voltage 1 (max): 4.46V
• Battery Backup Switching: No
• Watchdog Timer: No
• Chip Enable Signals: No
• Reset Active Time: 560ms
• Manual Reset: Yes
• Package Type: SOT-143
• Operating Supply Voltage (min): 1V
• Operating Supply Voltage (max): 5.5V
• Reset Threshold Voltage (max): 4.46V
• Reset Threshold Voltage (min): 4.3V
• Family Name: ADM811
• Power Dissipation: 200mW
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Power Fail Detection: No
• Mounting: Surface Mount
• Pin Count: 3 +Tab
• Supply Current: 0.015mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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
anteed only while V
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 part
CC
CC
(this is guar-
.
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ENSURING A VALID RESET/RESET
OUTPUT DOWN TO V
When V
ADM812 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 RESET /RESET of the ADM811/
ADM811
GND
V
V
CC
CC
CC
RESET
= 0 V
CC
= 0 V