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  Microsemi Electronic Components Datasheet  

MC33064 Datasheet

UNDERVOLTAGE SENSING CIRCUIT

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THE INFINITE POWER OF INNOVATION
MC33064 / MC34064
UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
DESCRIPTION
The MC34064 is an undervoltage sensing collector output stage capable of sinking
circuit designed specifically for use as a up to 60mA. The MC34064's RESET
reset controller in microprocessor- based output is specified to be fully functional at
systems. It offers the designer an VIN=1V. A major improvement over
economical, space-efficient solution for low competing products is the glitch-free
supply voltage detection when used in supply current during undervoltage
combination with a single pullup resistor. detection. Competing products demand a
Adding one capacitor offers the step function increase in operating current
functionality of a programmable delay time during the time that you least want or need
after power returns. The 34064 consists of a it: during power loss. See Product
temperature stable reference comparator Highlight below.
with hysteresis, high-current clamping
diode and open
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
PRODUCT HIGHLIGHT
KEY FEATURES
„ Monitors 5V Supplies (VT =
4.6V Typ.)
„ Outputs Fully Defined At VIN
= 1V (See Figure 1)
„ Glitch-Free Supply Current
During Switching (See
Product Highlight)
„ Ultra-Low Supply Current
(500µA Max.)
„ Temperature Compensated
ICC For Extremely Stable
Current Consumption
„ µP Reset Function
Programmable With 1
External Resistor And
Capacitor
„ Comparator Hysteresis
Prevents Output Oscillation
„ Electrically Compatible With
Motorola MC34064
„ Pin-to-Pin Compatible With
Motorola MC34064 /
MC34164
KEY FEATURES
„ All Microprocessor Or
Microcontroller Designs
Using 5V Supplies
„ Simple 5V Undervoltage
Detection
Copyright © 1999
Rev. 1.3a,2005-03-01
PACKAGE ORDER INFO
TA (°C)
Plastic SOIC
DM 8-Pin
RoHS / Pb-free
Transition DC: 0440
Plastic TO-92
LP 3-Pin
RoHS / Pb-free
Transition DC: 0509
0 to 70
MC34064DM
MC34064LP
-40 to 85 MC33064DM
MC33064LP
Plastic SOT-89
PK 3-Pin
RoHS / Pb-free
Transition DC: 0518
MC34064PK
MC33064PK
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. MC34064DM-TR)
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1


  Microsemi Electronic Components Datasheet  

MC33064 Datasheet

UNDERVOLTAGE SENSING CIRCUIT

No Preview Available !

THE INFINITE POWER OF INNOVATION
MC33064 / MC34064
UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
ABSOLUTE MAXIMUM RATINGS
Input Supply Voltage (VIN)................................................................................ -1V to 10V
RESET Output Voltage (VOUT)......................................................................................10V
Output Sink Current (IOL) .............................................................. Internally Limited (mA)
Clamp Diode Forward Current (IF), Pin 1 to Pin 2....................................................100mA
Operating Temperature Range ................................................................................... 150°C
Storage Temperature Range.........................................................................-65°C to 150°C
Package Peak Temp. for Solder Reflow (40 seconds maximum exposure) ... 260°C (+0 -5)
Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to
Ground. Currents are positive into, negative out of specified terminal.
PACKAGE PIN OUT
RESET
VIN
N.C.
GROUND
18
27
36
45
DM PACKAGE
(Top View)
N.C.
N.C.
N.C.
N.C.
THERMAL DATA
DM Plastic SOIC 8-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
165°C/W
LP Plastic TO-92 3-Pin
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
156°C/W
PK Plastic SOT-89 3-Pin
THERMAL RESISTANCE-JUNCTION TO TAB, θJT
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA
35°C/W
71°C/W
Junction Temperature Calculation: TJ = TA + (PD x θJA).
The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the
above assume no ambient airflow.
SIMPLIFIED BLOCK DIAGRAM
VIN
1 RESET
2 VIN
3 GROUND
LP PACKAGE
(Top View)
RESET
1
GROUND
2
VIN 3
PK PACKAGE
(Top View)
RoHS / Pb-free 100% matte Tin Lead Finish
RESET
_
+
1.2 VREF
GROUND
Copyright © 1999
Rev. 1.3a,2005-03-01
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
2


Part Number MC33064
Description UNDERVOLTAGE SENSING CIRCUIT
Maker Microsemi Corporation
PDF Download

MC33064 Datasheet PDF





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