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MC34064 Schematic ( PDF Datasheet ) - Microsemi Corporation
| Teilenummer | MC34064 |
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| Beschreibung | (MC33064 / MC34064) UNDERVOLTAGE SENSING CIRCUIT | |
| Hersteller | Microsemi Corporation | |
| Logo |  |
|
Gesamt 10 Seiten 
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
 
PRODUCT DATABOOK 1996/1997
MC33064/MC34064
TRANSIENT IMMUNE UNDERVOLTAGE SENSING CIRCUIT
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
FIGURE 5. — THRESHOLD VOLTAGE vs. TEMPERATURE
4.7
VT+ ; VIN increasing 4.5 - 4.7
4.68 VT- ; VIN decreasing 4.7 - 4.5
4.66 RL = 10kohms
4.64
4.62
VT+ - High Threshold Voltage
4.6
4.58
4.56
VT- - Low Threshold Voltage
4.54
4.52
4.5
-55 -25 0 25 50 75 100 125 150
(TJ) Temperature - ( C)
FIGURE 6. — THRESHOLD HYSTERESIS vs. TEMPERATURE
50
46
42
38
34
30
26
22
18
14
10
-55 -25
0 25 50 75 100 125 150
(TJ) Temperature - ( C)
FIGURE 7. — SUPPLY CURRENT vs. INPUT VOLTAGE
1000
800
RL = No Load
TA = 25 C
600
400
200
0
0 2 4 6 8 10
(VIN) Input Voltage - (V)
FIGURE 8. — SUPPLY CURRENT vs. TEMPERATURE
1000
900
RL = No Load
800
VIN = 10V
700
600
500
400 VIN = 5V
300
200
100
0
-55 -25
0
25 50 75 100 125 150
(TJ) Temperature - ( C)
6 Copyright © 1999
Rev. 1.3 6/99
6 Page | ||
| Seiten | Gesamt 10 Seiten | |
| PDF Download | [ MC34064 Schematic.PDF ] | |
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