T
H E
I
N F I N I T E
P
O W E R
O F
D E S C R I P T I O N
The
MC33164-3
and
MC34164-3
undervoltage
sensing
circuits
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
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
T
A
0 to 70
-40 to 85
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e.
MC34164-3DM-TR)
L
Copyright © 1999
Rev. 1.2a,2005-03-09
11861 W
ESTERN
3 V U
N D E R V O L T A G E
P
R O D U C T I O N
I
N N O V A T I O N
are
returns. The MC33164-3 and MC34164-3
designed
consist of a temperature stable reference
comparator
with
hysteresis,
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.
P R O D U C T H I G H L I G H T
PACKAGE ORDER INFO
Plastic SOIC
DM
LP
8-Pin
(°C)
RoHS Compliant / Pb-free
RoHS Compliant / Pb-free
Transition DC: 0440
MC34164-3DM
MC33164-3DM
F
M
I N
I N I T Y
I C R O E L E C T R O N I C S
A
, G
G
, CA. 92841, 714-898-8121, F
VENUE
ARDEN
ROVE
MC33164-3 / MC34164-3
S
C
E N S I N G
I R C U I T
D
S
A T A
H E E T
K E Y F E A T U R E S
Monitors +3.3V Supplies (V
2.7V Typ)
high-current
Outputs Fully Defined At V
(See Product Highlight)
Ultra-Low Supply Current (13µA
Max.)
Temperature Compensated I
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
A P P L I C A T I O N S
All Microprocessor Or
Microcontroller Designs Using
3V/3.3V Supplies
Simple 3V/3.3V Undervoltage
Detection
Plastic TO-92
3-Pin
Transition DC: 0509
MC34164-3LP
MC33164-3LP
I
.
N C
: 714-893-2570
AX
=
T
≥ 1V
IN
CC
1