TCM811MERCTR Microchip Technology, TCM811MERCTR Datasheet - Page 6

• Manufacturer Part Number: TCM811MERCTR
• Description: IC RESET MONITOR 4.38V SOT143-4
• Manufacturer: Microchip Technology
• Type: Simple Reset/Power-On Resetr

Specifications of TCM811MERCTR

• Number Of Voltages Monitored: 1
• Output: Push-Pull, Totem Pole
• Reset: Active Low
• Reset Timeout: 140 ms Minimum
• Voltage - Threshold: 4.38V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-143, SOT-143B, TO-253AA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TCM811/TCM812
3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
GND provides the negative reference for the analog
input voltage. Typically, the circuit ground is used.
3.2
RESET output remains low while V
Reset voltage threshold (V
voltage (V
device will remain in Reset for the Reset delay timer
(T
driven to the high state.
3.3
RESET output remains high while V
Reset voltage threshold (V
voltage (V
device will remain in Reset for the Reset delay timer
(T
driven to the low state.
DS21615C-page 6
RST
RST
Pin No.
). After that time expires, the RESET pin will be
). After that time expires, the RESET pin will be
1
2
2
3
4
PIN DESCRIPTIONS
Ground Terminal (GND)
Reset Output (RESET) (TCM811)
Reset Output (RESET) (TCM812)
DD
DD
) returns to a high level (V
) returns to a high level (V
PIN FUNCTION TABLE
(TCM812)
(TCM811)
Symbol
RESET
RESET
GND
V
MR
DD
TRIP
TRIP
). Once the device
). Once the device
Ground
RESET push-pull output remains low while V
threshold, and for at least 140 ms (min.) after V
Reset push-pull output remains high while V
and for at least 140 ms (min.) after V
Manual Reset input generates a Reset when MR is below V
Supply voltage
DD
TRIP
TRIP
DD
Table
is below the
is below the
+ V
+ V
HYS
HYS
3-1.
), the
), the
3.4
The Manual Reset (MR) input pin allows a push button
switch to easily be connected to the system. When the
push button is depressed, it forces a system Reset.
This pin has circuitry that filters noise that may be
present on the MR signal.
The MR pin is active-low and has an internal pull-up
resistor.
3.5
V
voltage level that requires monitoring.
DD
can be used for power supply monitoring or a
Description
DD
Manual Reset (MR)
Supply Voltage (V
rises above reset threshold
DD
DD
is below the reset voltage threshold,
DD
is below the reset voltage
rises above reset threshold
© 2007 Microchip Technology Inc.
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DD
)