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MC34164 Datasheet, PDF (1/8 Pages) ON Semiconductor – MICROPOWER UNDERVOLTAGE SENSING CIRCUITS | |||
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Order this document by MC34164/D
Micropower Undervoltage
Sensing Circuits
The MC34164 series are undervoltage sensing circuits specifically
designed for use as reset controllers in portable microprocessor based
systems where extended battery life is required. These devices offer the
designer an economical solution for low voltage detection with a single
external resistor. The MC34164 series features a bandgap reference, a
comparator with precise thresholds and builtâin hysteresis to prevent erratic
reset operation, an open collector reset output capable of sinking in excess
of 6.0 mA, and guaranteed operation down to 1.0 V input with extremely low
standby current. These devices are packaged in 3âpin TOâ226AA, 8âpin
SOâ8 and Microâ8 surface mount packages.
Applications include direct monitoring of the 3.0 or 5.0 V MPU/logic power
supply used in appliance, automotive, consumer, and industrial equipment.
⢠Temperature Compensated Reference
⢠Monitors 3.0 V (MC34164â3) or 5.0 V (MC34164â5) Power Supplies
⢠Precise Comparator Thresholds Guaranteed Over Temperature
⢠Comparator Hysteresis Prevents Erratic Reset
⢠Reset Output Capable of Sinking in Excess of 6.0 mA
⢠Internal Clamp Diode for Discharging Delay Capacitor
⢠Guaranteed Reset Operation With 1.0 V Input
⢠Extremely Low Standby Current: As Low as 9.0 µA
⢠Economical TOâ226AA, SOâ8 and Microâ8 Surface Mount Packages
MC34164
MC33164
MICROPOWER
UNDERVOLTAGE
SENSING CIRCUITS
SEMICONDUCTOR
TECHNICAL DATA
P SUFFIX
PLASTIC PACKAGE
CASE 29
(TOâ226AA)
123
Pin 1. Reset
2. Input
3. Ground
D SUFFIX
PLASTIC PACKAGE 8
CASE 751
1
(SOâ8)
DM SUFFIX
PLASTIC PACKAGE
CASE 846A
(Microâ8)
8
1
Representative Block Diagram
Input 2 (2)
Reset
1 (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 3âpin TOâ226AA package.
Pin numbers in parenthesis are for the 8âlead packages.
This device contains 28 active transistors.
MOTOROLA ANALOG IC DEVICE DATA
ORDERING INFORMATION
Device
Operating
Temperature Range Package
MC34164Dâ3
MC34164Dâ5
MC34164DMâ3
MC34164DMâ5
MC34164Pâ3
MC34164Pâ5
MC33164Dâ3
MC33164Dâ5
MC33164DMâ3
MC33164DMâ5
MC33164Pâ3
MC33164Pâ5
TA = 0° to +70°C
TA = â40° to +125°C
SOâ8
Microâ8
TOâ226AA
SOâ8
Microâ8
TOâ226AA
© Motorola, Inc. 1996
Rev 1
1
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