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MC33064LP Datenblatt(PDF) 1 Page - Microsemi Corporation

Teilenummer MC33064LP
Bauteilbeschribung  UNDERVOLTAGE SENSING CIRCUIT
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Hersteller  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

MC33064LP Datenblatt(HTML) 1 Page - Microsemi Corporation

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PACKAGE ORDER INFORMA TION
T
A (°C)
Plastic SOIC
8-pin
0 to 70
MC34064DM
MC34064LP
-40 to 85
MC33064DM
MC33064LP
-55 to 125
DM
Plastic TO-92
3-pin
LP
DESCRIPTION
The MC34064 is an undervoltage
sensing circuit designed specifically for
use as a reset controller in microproces-
sor-based systems. It offers 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
34064 consists of a temperature stable
reference comparator with hysteresis,
high-current clamping diode and open
KEY FEATURES
s Monitors 5V Supplies (V
T = 4.6V Typ.)
s Outputs Fully Defined At V
IN = 1V
(See
Figure 1)
s Glitch-Free Supply Current During
Switching
(See Product Highlight)
! Ultra-Low Supply Current (500µA Max.)
! Temperature Compensated I
CC 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.
collector output stage capable of
sinking up to 60mA. The MC34064's
RESET output is specified to be fully
functional at V
IN=1V.
A major improve-
ment over competing products is the
glitch-free supply current during
undervoltage detection. Competing
products demand a step function
increase in operating current during the
time that you least want or need it....
during power loss. See Product
Highlight below.
PRODUCT HIGHLIGHT
SUPPLY CURRENT VS. INPUT VOLTAGE
APPLICATIONS
s
s
s
s
s All Microprocessor Or Microcontroller
Designs Using 5V Supplies
s
s
s
s
s Simple 5V Undervoltage Detection
-10
-6
0
250
280
Input Voltage less Threshold Voltage - (mV)
400
265
295
310
-8
-4
-2
R
L = No Load
24
6
8
10
340
370
355
385
325
ACTIVE
REGION
MONITOR
REGION
U NDER VOL T AGE S ENSING C IRCUIT
P RODUCTION
D AT A
S HEET
T HE
I NFINITE
P OWER
OF
I NNOV A TION
MC33064/MC34064
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. MC34064DMT)
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
Copyright © 1999
Rev. 1.3
6/99
1
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
L IN F INITY M ICROELECTRONICS I NC .


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