MC33164-3 Datasheet, PDF (1/9 Pages) Microsemi Corporation – 3V UNDERVOLTAGE SENSING CIRCUIT

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 V ≥ 1V. See Product
IN
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_T = 2.7V Typ)
s
Outputs
Fully
Defined
At
V
IN
≥
1V
(See
Product Highlight)
s Ultra-Low Supply Current (13µA Max.)
! Temperature Compensated I For
CC
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
1
Undefined
0
0
1
2
3
10
Input Voltage - (V)
PA C K A G E O R D E R I N F O R M AT I O N
T_A (°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)
LINFINITY MICROELECTRONICS INC.
Copyright © 1999
Rev. 1.2 6/99
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: [phone]
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