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PDF MC34064 Data sheet ( Hoja de datos )
| Número de pieza | MC34064 | |
| Descripción | (MC33064 / MC34064) UNDERVOLTAGE SENSING CIRCUIT | |
| Fabricantes | Microsemi Corporation | |
| Logotipo |  |
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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
MC33064/MC34064
UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
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
collector output stage capable of
sinking up to 60mA. The MC34064's
RESET output is specified to be fully
functional at VIN=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.
NOTE: For current data & package dimensions, visit our web site: http://www.linfinity.com.
PRODUCT HIGHLIGHT
SUPPLY CURRENT VS. INPUT VOLTAGE
400
385 RL = No Load
370
355
340 ACTIVE
325 REGION
MONITOR
REGION
310
295
280
265
250
-10 -8 -6 -4 -2 0 2 4 6 8 10
Input Voltage less Threshold Voltage - (mV)
K E Y F E AT U R E S
s
Monitors
5V
Supplies
(V
T
=
4.6V
Typ.)
s Outputs Fully Defined At VIN = 1V (See
Figure 1)
s 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.
APPLICATIONS
s All Microprocessor Or Microcontroller
Designs Using 5V Supplies
s Simple 5V Undervoltage Detection
Copyright © 1999
Rev. 1.3 6/99
PA C K A G E O R D E R I N F O R M AT I O N
TA (°C)
DM
Plastic
8-pin
SOIC
LP
Plastic
3-pin
TO-92
0 to 70
MC34064DM
MC34064LP
-40 to 85
MC33064DM
MC33064LP
-55 to 125
—
—
Note: All surface-mount packages are available in Tape & Reel.
Append the letter "T" to part number. (i.e. MC34064DMT)
LINFINITY MICROELECTRONICS INC.
11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841, 714-898-8121, FAX: 714-893-2570
1
1 page  
PRODUCT DATABOOK 1996/1997
MC33064/MC34064
UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
FIGURE 1. — INPUT VOLTAGE and RESET OUTPUT
VOLTAGE vs. TIME
20
15 RL = 10k
TA = 25 C
10
5
0
20
15
10
5
0
0 .2 .4 .6 .8 1.0 1.2 1.4 1.6 1.8 2.0
(t) Time - (ms)
FIGURE 2. — POWER-UP RESET VOLTAGE
2.0
1.8
RL = 10kohms
TA = 25 C
1.6
1.4
1.2
1.0
VIN
0.8
0.6
0.4
0.2
0
0
0.4 0.8 1.2
(t) Time - (ms)
RESET
1.6 2.0
FIGURE 3. — POWER-DOWN RESET VOLTAGE
2.0
1.8
RL = 10kohms
TA = 25 C
1.6
1.4
1.2
1.0
VIN
0.8
0.6
0.4
0.2
0
0
RESET
0.4 0.8
1.2
(t) Time - (ms)
1.6
2.0
FIGURE 4. — RESET OUTPUT VOLTAGE vs. INPUT VOLTAGE
5
RL = 10kohms
TA = 25 C
4
3
2
1
0
4.58
4.59
4.60
4.61
(VIN) Input Voltage - (V)
4.62
Copyright © 1999
Rev. 1.3 6/99
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet MC34064.PDF ] | |
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