MC33464 Datasheet, PDF (1/8 Pages) ON Semiconductor – MICROPOWER UNDERVOLTAGE SENSING CIRCUITS

Micropower Undervoltage
Sensing Circuits
The MC33464 series are micropower undervoltage sensing circuits that
are specifically designed for use with battery powered microprocessor based
systems, where extended battery life is required. A choice of several
threshold voltages from 0.9 V to 4.5 V are available. These devices feature a
very low quiescent bias current of 0.8 µA typical.
The MC33464 series features a highly accurate voltage reference, a
comparator with precise thresholds and built–in hysteresis to prevent erratic
reset operation, a choice of output configurations between open drain or
complementary MOS, and guaranteed operation below 1.0 V with extremely
low standby current. These devices are available in either SOT–89 3–pin or
SOT–23 5–pin surface mount packages.
Applications include direct monitoring of the MPU/logic power supply
used in portable, appliance, automotive and industrial equipment.
MC33464 Features:
• Extremely Low Standby Current of 0.8 µA at Vin = 1.5 V
• Wide Input Voltage Range (0.7 V to 10 V)
• Monitors Power Supply Voltages from 1.1 V to 5.0 V
• High Accuracy Detector Threshold (±2.5%)
• Two Reset Output Types (Open Drain or Complementary Drive)
• Two Surface Mount Packages (SOT–89 or SOT–23 5–Pin)
ORDERING INFORMATION
Device
Threshold
Voltage Type
Marking
Package
(Qty/Reel)
MC33464H–09AT1
MC33464H–20AT1
MC33464H–27AT1
MC33464H–30AT1
MC33464H–45AT1
0.9
2.0
Open
2.7
Drain
3.0
Reset
4.5
MC33464H–09CT1
MC33464H–20CT1
MC33464H–27CT1
MC33464H–30CT1
MC33464H–43CT1
MC33464H–45CT1
0.9
2.0
Compl.
2.7
3.0
MOS
4.3
Reset
4.5
MC33464N–09ATR
0.9
MC33464N–20ATR
2.0
MC33464N–21ATR
2.1
Open
MC33464N–27ATR
2.7
Drain
MC33464N–30ATR
3.0
Reset
MC33464N–45ATR
4.5
MC33464N–48ATR
4.8
MC33464N–09CTR
0.9
MC33464N–20CTR
2.0
Compl.
MC33464N–27CTR
2.7
MOS
MC33464N–30CTR
3.0
Reset
MC33464N–45CTR
4.5
T09A
T20A
T27A
T30A
T45A
T09C
T20C
T27C
T30C
T43C
T45C
9N
0R
1R
7R
0S
5T
8T
9F
0J
7J
0K
5L
SOT–89
(1000)
SOT–23
(3000)
Other voltages from 0.9 to 6.0 V, in 0.1 V increments, are available. Consult factory for
information.
Order this document by MC33464/D
MC33464
MICROPOWER
UNDERVOLTAGE
SENSING CIRCUITS
SEMICONDUCTOR
TECHNICAL DATA
TAB
1
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
Reset 1
Input 2
Ground 3
(Top View)
Tab
(Tab is connected
to Pin 2)
5
1
N SUFFIX
PLASTIC PACKAGE
CASE 1212
(SOT–23–5)
Reset 1
5 N/C
Input 2
Ground 3
4 N/C
(Top View)
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1999
Rev 2, 07/1999
1