MAX6834 데이터 시트보기 (PDF) - Maxim Integrated
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MAX6834 Datasheet PDF : 11 Pages
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MAX6832–MAX6840
Ultra-Low-Voltage SC70 Voltage Detectors
and µP Reset Circuits
MAX6833
SC70-3
1
PIN
MAX6832/
MAX6834
SC70-3
MAX6836
SC70-4
1
1
MAX6835/
MAX6837
SC70-4
1
—
2
—
2
2
—
2
—
—
—
3
3
3
3
4
4
Pin Description—MAX6832–MAX6837
NAME
FUNCTION
GND
RESET
RESET
MR
VCC
Ground
Reset Output, Open-Drain or Push-Pull, Active-Low. RESET
changes from HIGH to LOW when VCC drops below the
selected reset threshold or MR is pulled low. RESET remains
LOW for the reset timeout period after VCC exceeds the device
reset threshold and MR is released high.
Reset Output, Push-Pull, Active-High. RESET changes from
LOW to HIGH when the VCC input drops below the selected
reset threshold or MR is pulled low. RESET remains HIGH for
the reset timeout period after VCC exceeds the device reset
threshold and MR is released high.
Active-Low Manual Reset Input. Internal 20kΩ pullup to VCC.
Pull LOW to force a reset. Reset remains active as long as MR is
LOW and for the reset timeout period after MR goes HIGH.
Leave unconnected or connect to VCC if unused.
Supply Voltage and Monitored Supply
Pin Description—MAX6838/MAX6839/MAX6840
PIN
MAX6839
SC70-4
MAX6838/
MAX6840
SC70-4
NAME
1
1
RESET-IN
2
2
VCC
3
3
GND
4
—
RESET
—
4
RESET
FUNCTION
Adjustable Reset Threshold Input. High-impedance input for reset comparator. Connect
this pin to an external resistive-divider network to set the reset threshold voltage; the
typical threshold is 444mV. Reset is asserted when RESET-IN is below the threshold (VCC
is not monitored).
Supply Voltage (1.1V to 3.3V)
Ground
Reset Output, Push-Pull, Active-High. RESET changes from LOW to HIGH when the
RESET-IN input drops below the typical reset threshold (444mV). RESET remains HIGH for
the reset timeout period after RESET-IN exceeds the reset threshold.
Reset Output, Open-Drain or Push-Pull, Active-Low. RESET changes from HIGH to LOW
when RESET-IN drops below the typical reset threshold (444mV). RESET remains LOW for
the reset timeout period after RESET-IN exceeds the reset threshold.
Maxim Integrated
5
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