MC33164-3/ MC34164-3
3 V UNDERVOLTAGE
S
ENS I NG
CI RCUI T
T H E I N F I N I T E P O W E R O F I N N O V A T I O N
P R O D U C T I O N D A T A S H E E T
D E S C R I P T I O N
K E Y F E A T U R E S
Monitors +3.3V Supplies
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
(V = 2.7V Typ)
T
Outputs Fully Defined At V ≥ 1V (See
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
IN
Product Highlight)
Ultra-Low Supply Current (13µA Max.)
!
!
!
!
!
Temperature Compensated ICC For
Extremely Stable Current Consumption
µP Reset Delay Programmable With 1
External Resistor And Capacitor
functional at V ≥ 1V. See Product
IN
Highlight below.
Comparator Hysteresis Prevents Output
Oscillation (60mV Typ.)
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
Electrically Compatible With Motorola
MC34164-3
P R O D U CT H I G H LI G H T
Pin-to-Pin Compatible With Motorola
MC34064 / MC34164
RESET OUTPUT VS. IN PUT VO LTAG E
10
AP P LICATIO N S
All Microprocessor Or Microcontroller
Designs Using 3V/3.3V Supplies
3
2
1
Simple 3V/3.3V Undervoltage Detection
Undefined
0
0
1
2
3
10
Input Voltage - (V)
P A C K A G E O R D E R I N F O R M A T I O N
Plastic SOIC
8-pin
Plastic TO-92
LP
3-pin
T (°C)
DM
A
0 to 70
MC34164-3DM
MC34164-3LP
MC33164-3LP
-40 to 85
MC33164-3DM
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. MC34164-3DMT)
L I N F I N I T Y M I C R O E L E C T R O N I C S I N C .
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
Copyright © 1999
Rev. 1.2 6/ 99
1