MC33164-3

T H E I N F I N I T E P O W E R O F I N N O VAT I O N MC33164-3/MC34164-3 3V UNDERVOLTAGE SENSING CIRCUIT PRODUCTION DATA SHEET DESCRIPTION The MC33164-3 and MC34164-3 are undervoltage sensing circuits designed specifically for use as reset controllers in microprocessor-based systems. They offer the designer an economical, space efficient solution for low supply voltage detection when used in combination with a single pull-up resistor. Adding one capacitor offers the functionality of a programmable delay time after power returns. The MC33164-3 and MC34164-3 consist of a temperature stable reference comparator with hysteresis, high-current clamping diode and an open collector output stage capable of sinking more than 6mA over the full temperature range. The MC33164-3 and MC34164-3's RESET output is specified to be fully functional at VIN ≥ 1V. See Product Highlight below. NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com. PRODUCT HIGHLIGHT RESET OUTPUT VS. I N P U T V O LTA G E 10 3 K E Y F E AT U R E S s Monitors +3.3V Supplies (V = 2.7V Typ) T s Outputs Fully Defined At VIN ≥ 1V (See Product Highlight) s Ultra-Low Supply Current (13µA Max.) ! Temperature Compensated ICC For Extremely Stable Current Consumption ! µP Reset Delay Programmable With 1 External Resistor And Capacitor ! Comparator Hysteresis Prevents Output Oscillation (60mV Typ.) ! Electrically Compatible With Motorola MC34164-3 ! Pin-to-Pin Compatible With Motorola ...