SEMICONDUCTOR
TECHNICAL DATA
MICROPOWER
UNDERVOLTAGE
SENSING CIRCUITS
N SUFFIX
PLASTIC PACKAGE
CASE 1212
(SOT–23–5)
5
1
Order this document by MC33464/D
H SUFFIX
PLASTIC PACKAGE
CASE 1213
(SOT–89)
TAB
1
(Tab is connected
to Pin 2)
1
5
4
2
3
(Top View)
Reset
Input
Ground
N/C
N/C
1
2
3
(Top View)
Reset
Input
Ground
Tab
1
MOTOROLA ANALOG IC DEVICE DATA
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
μ
A 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
μ
A 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
2.7
3.0
4.5
T09A
T20A
T27A
T30A
T45A
Open
Drain
Reset
SOT 89
SOT–89
(1000)
MC33464H–09CT1
MC33464H–20CT1
MC33464H–27CT1
MC33464H–30CT1
MC33464H–43CT1
MC33464H–45CT1
0.9
2.0
2.7
3.0
4.3
4.5
T09C
T20C
T27C
T30C
T43C
T45C
Compl.
Com l.
MOS
Reset
MC33464N–09ATR
MC33464N–20ATR
MC33464N–21ATR
MC33464N–27ATR
MC33464N–30ATR
MC33464N–45ATR
MC33464N–48ATR
0.9
2.0
2.1
2.7
3.0
4.5
4.8
9N
0R
1R
7R
0S
5T
8T
Open
Drain
Reset
SOT–23
(3000)
MC33464N–09CTR
MC33464N–20CTR
MC33464N–27CTR
MC33464N–30CTR
MC33464N–45CTR
0.9
2.0
2.7
3.0
4.5
9F
0J
7J
0K
5L
Compl.
MOS
Reset
Other voltages from 0.9 to 6.0 V, in 0.1 V increments, are available. Consult factory for
information.
Motorola, Inc. 1999
Rev 2, 07/1999