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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
MC34064 / MC34164
APPLICATIONS
s All Microprocessor Or Microcontroller Designs Using 3V/3.3V Supplies
s Simple 3V/3.3V Undervoltage Detection
2
RESET Output Voltage - (V)
1
Undefined
0 0123
Input Voltage - (V)
10
PA C K A G E O R D E R I N F O R M AT I O N
TA (°C)
DM
Plastic 8-pin
SOIC
LP
Plastic 3-pin
TO-92
0 to 70
MC34164-3DM
MC34164-3LP
-40 to 85
MC33164-3DM
MC33164-3LP
Note: All surface-mount packages are available in Tape & Reel. Append the letter "T" to part number. (i.e. MC34164-3DMT)
Copyright © 1999 Rev. 1.2 6/99
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
PRODUCT DATABOOK 1996/1997
MC33164-3/MC34164-3
3V UNDERVOLTAGE SENSING CIRCUIT PRODUCTION DATA SHEET
A B S O L U T E M A X I M U M R AT I N G S (Note 1)
Input Supply Voltage (VIN) ............................................................................... -1V to 12V RESET Output Voltage (VOUT) ..................................................................................... 12V Output Sink Current (IOL) ............................................................ Internally Limited (mA) Clamp Diode Forward Current (IF), Pin 1 to pin 2 ............................................... 100mA Operating Junction Temperature
Plastic (DM, LP - Packages) .................................................................................. 150°C Storage Temperature Range ...........................................................
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