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Motorola Electronic Components Datasheet

MC33064 Datasheet

(MC33064 / MC34064) UNDERVOLTAGE SENSING CIRCUIT

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Undervoltage Sensing Circuit
The MC34064 is an undervoltage sensing circuit specifically designed for
use as a reset controller in microprocessor-based systems. It offers the
designer an economical solution for low voltage detection with a single
external resistor. The MC34064 features a trimmed-in-package bandgap
reference, and a comparator with precise thresholds and built-in hysteresis
to prevent erratic reset operation. The open collector reset output is capable
of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 V
input with low standby current. These devices are packaged in 3-pin
TO-226AA, 8-pin SO–8 and Micro–8 surface mount packages.
Applications include direct monitoring of the 5.0 V MPU/logic power
supply used in appliance, automotive, consumer and industrial equipment.
Trimmed-In-Package Temperature Compensated Reference
Comparator Threshold of 4.6 V at 25°C
Precise Comparator Thresholds Guaranteed Over Temperature
Comparator Hysteresis Prevents Erratic Reset
Reset Output Capable of Sinking in Excess of 10 mA
Internal Clamp Diode for Discharging Delay Capacitor
Guaranteed Reset Operation with 1.0 V Input
Low Standby Current
Economical TO–226AA, SO–8 and Micro–8 Surface Mount Packages
Order this document by MC34064/D
MC34064
MC33064
UNDERVOLTAGE
SENSING CIRCUIT
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 29
(TO–226AA)
123
Pin 1. Reset
2. Input
3. Ground
D SUFFIX
PLASTIC PACKAGE 8
CASE 751
(SO–8)
1
Representative Block Diagram
Input 2 (2)
Reset
1 (1)
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Micro–8)
8
1
Reset 1
Input 2
N.C. 3
Ground 4
8 N.C.
7 N.C.
6 N.C.
5 N.C.
(Top View)
1.2 Vref
Gnd 3 (4)
=
Sink Only
Positive True Logic
Pin numbers adjacent to terminals are for the 3–pin TO–226AA package.
Pin numbers in parenthesis are for the 8–lead packages.
This device contains 21 active transistors.
MOTOROLA ANALOG IC DEVICE DATA
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC34064D–5
MC34064DM–5
MC34064P–5
TA = 0° to +70°C
SO–8
Micro–8
TO–226AA
MC33064D–5
SO–8
MC33064DM–5 TA = – 40° to +85°C Micro–8
MC33064P–5
TO–226AA
© Motorola, Inc. 1996
Rev 2
1


Motorola Electronic Components Datasheet

MC33064 Datasheet

(MC33064 / MC34064) UNDERVOLTAGE SENSING CIRCUIT

No Preview Available !

MAXIMUM RATINGS
Rating
Power Input Supply Voltage
Reset Output Voltage
Reset Output Sink Current (Note 1)
Clamp Diode Forward Current, Pin 1 to 2 (Note 1)
Power Dissipation and Thermal Characteristics
P Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
D Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
DM Suffix, Plastic Package
Maximum Power Dissipation @ TA = 25°C
Thermal Resistance, Junction–to–Air
Operating Junction Temperature
Operating Ambient Temperature
MC34064
MC33064
Storage Temperature Range
NOTE: ESD data available upon request.
MC34064 MC33064
Symbol
Vin
VO
ISink
IF
Value
–1.0 to 10
10
Internally
Limited
100
Unit
V
V
mA
mA
PD
RθJA
PD
RθJA
PD
RθJA
TJ
TA
Tstg
625
200
625
200
520
240
+150
0 to +70
–40 to +85
–65 to +150
mW
°C/W
mW
°C/W
mW
°C/W
°C
°C
°C
ELECTRICAL CHARACTERISTICS (For typical values TA = 25°C, for min/max values TA is the operating ambient temperature range
that applies [Notes 2 and 3] unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max Unit
COMPARATOR
Threshold Voltage
High State Output (Vin Increasing)
Low State Output (Vin Decreasing)
Hysteresis
VIH 4.5 4.61
VIL 4.5 4.59
VH 0.01 0.02
RESET OUTPUT
Output Sink Saturation
(Vin = 4.0 V, ISink = 8.0 mA)
(Vin = 4.0 V, ISink = 2.0 mA)
(Vin = 1.0 V, ISink = 0.1 mA)
VOL
– 0.46
– 0.15
––
Output Sink Current (Vin, Reset = 4.0 V)
ISink
10
27
Output Off-State Leakage (Vin, Reset = 5.0 V)
IOH – 0.02
Clamp Diode Forward Voltage, Pin 1 to 2 (IF = 10 mA)
VF 0.6 0.9
TOTAL DEVICE
Operating Input Voltage Range
Vin 1.0 to 6.5
Quiescent Input Current (Vin = 5.0 V)
Iin – 390
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3. Tlow = 0°C for MC34064
–40°C for MC33064
Thigh = +70°C for MC34064
+85°C for MC33064
4.7
4.7
0.05
1.0
0.4
0.1
60
0.5
1.2
500
V
V
mA
µA
V
V
µA
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33064
Description (MC33064 / MC34064) UNDERVOLTAGE SENSING CIRCUIT
Maker Motorola
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MC33064 Datasheet PDF





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