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MC33164-MC33164D-005-MC33164D-3R2-MC33164D-5R2-MC33164DM-3R2-MC33164P-005-MC33164P5RP-MC33164P-5RP-MC34164-MC34164D-003-MC34164D-3R2-MC34164P-003-MC34164P-005-MC34164P-3RP
MicroPower UnderVoltage Sensing Circuit
MC34164, MC33164,
NCV33164
Micropower Undervoltage
Sensing Circuits
The MC34164 series are undervoltage sensing circuits specifically
designed for use as reset controllers in portable microprocessor based
systems where extended battery life is required. These devices offer
the designer an economical solution for low voltage detection with a
single external resistor. The MC34164 series features a bandgap
reference, a comparator with precise thresholds and built−in hysteresis
to prevent erratic reset operation, an open collector reset output
capable of sinking in excess of 6.0 mA, and guaranteed operation
down to 1.0 V input with extremely low standby current. The MC
devices are packaged in 3−pin TO−226AA, micro size TSOP−5, 8−pin
SOIC−8 and Micro8 surface mount packages. The NCV device is
packaged in SOIC−8.
Applications include direct monitoring of the 3.0 V or 5.0 V
MPU/logic power supply used in appliance, automotive, consumer,
and industrial equipment. Temperature Compensated Reference Monitors 3.0 V (MC34164−3) or 5.0 V (MC34164−5) Power Supplies Precise Comparator Thresholds Guaranteed Over Temperature Comparator Hysteresis Prevents Erratic Reset Reset Output Capable of Sinking in Excess of 6.0 mA Internal Clamp Diode for Discharging Delay Capacitor Guaranteed Reset Operation With 1.0 V Input Extremely Low Standby Current: As Low as 9.0 �A Economical TO−226AA, TSOP−5, SOIC−8 and Micro8 Surface
Mount Packages NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes Pb−Free Packages are Available
Figure 1. Representative Block Diagram2 (2)
Input Sink Only
Positive True Logic
Pin numbers adjacent to terminals are for the 3−pin TO−226AA package.
