MC34064P-5RAG Electronic IC Chips UNDERVOLTAGE SENSING CIRCUIT

MC34064, MC33064, NCV33064

Undervoltage Sensing Circuit

The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor−based systems. It offers the designer an economical solution for low voltage detection with a single external resistor. The MC34064 features a trimmed−in−package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V input with low standby current. The MC devices are packaged in 3−pin TO-92, micro size TSOP−5, 8−pin SOIC−8 and Micro8 surface mount packages. The NCV device is packaged in SOIC−8 and TO−92.

Applications include direct monitoring of the 5.0 V MPU/logic power supply used in appliance, automotive, consumer and industrial equipment.

Features

• Trimmed−In−Package Temperature Compensated Reference

• Comparator Threshold of 4.6 V at 25°C

• Precise Comparator Thresholds Guaranteed Over Temperature

• Comparator Hysteresis Prevents Erratic Reset

• Reset Output Capable of Sinking in Excess of 10 mA

• Internal Clamp Diode for Discharging Delay Capacitor

• Guaranteed Reset Operation with 1.0 V Input

• Low Standby Current

• Economical TO−92, 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

MAXIMUM RATINGS

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected.

1. ESD data available upon request.

2. Maximum package power dissipation limits must be observed.

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