Microcomputer Peripheral LSIs
MN1380 Series
CMOS LSIs for Voltage Detection
Overview
The MN1380 series are elements that monitor the power
supply voltage supplied to microcomputers and other LSI
systems and issue reset signals for initializing the system
after the power is first applied or for preventing runaway
operation when the supply voltage fluctuates.
There is a choice of three output types: CMOS output,
N-channel open drain output, and inverted CMOS out-
put. There are also three package types: M, TO-92, and a
mini type for surface mounting.
Choose the ideal element for your application from the
series' wide selection of detection ranks (17 ranks between
2.0 and 4.9 volts), output types, and package types.
Pin Assignment
Features
ce
Three-pin element requiring no adjustment
Wide selection of detection ranks (17 ranks between
2.0 and 4.9 volts)
Highly precise detection voltage
Detection voltage with hysteresis characteristic
∆VD
= 50 mV for ranks C to K
∆VD
= 100 mV for ranks L to U
Low current consumption: I
DD
= 1µA (typ.) for V
DD
=5V
Low fluctuation in detection voltage with tempera-
ture (typ. 1 mV/˚C)
Wide selection of output types: CMOS output, N-
channel open drain output, and inverted CMOS
output
Wide selection of package types: M, TO-92, and a
mini type for surface mounting.
Applications
Battery checkers
Power outage detectors
Level discriminators
Memory backup systems
Microcomputer reset circuits
Reset circuits for other electronic circuits
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3
2
1
M type package
1381
23R
1
2
3
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M
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Di
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2
23
MN1380 - R
TO-92 type package
/D
LCR
1
3
Mini type package
1=OUT
2=V
DD
3=V
SS
SAG00003CEM
1
MN1380 Series
MN1380 Series Naming Conventions
Microcomputer Peripheral LSIs
The MN1380 series offers a wide selection of detection ranks, output types, package types, and packaging. All
combinations use the following naming conventions. When ordering, be sure to give the correct part number using
these naming conventions.
MN13801–R (TA)
Winding direction for tape packaging
(TA) ...... Tape packaging for TO-92 type package
(TX) ...... Embossed tape packing for mini type package
(TW) ..... Embossed tape packing for mini type package
For further details, see the package specifications.
Matsushita Electronics Corporation MN1380 series of voltage detection CMOS
LSIs with low current consumptions
(Example)
/D
isc
MN13821–R (TW)
MN1380 series of voltage detection CMOS LSIs with low current consumption
Minimum Packaging Unit
Bulk (M and TO-92 types) ·············· 1,000
Magazine (Mini type) ······················ 50
Taping (Mini and TO-92 types) ······· 3,000
2
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Detection voltage rank (C to U)
Output type:
Blank ········ CMOS output
1 ················ N-channel open drain output
2 ················ inverted CMOS output
Package:
0 ················ M type package
1 ················ TO-92 type package
2 ················ Mini type package
Embossed tape packaging
R rank (detection voltage of 4.0 to 4.3 V)
N-channel open drain output
Mini type package
Ma
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Microcomputer Peripheral LSIs
Series Lineup
Output
CMOS output
Inverted CMOS output
Package
M type Package
MN1380
MN13801
MN13802
TO-92 type Package
MN1381
MN13811
MN13812
MN1380 Series
Mini type Package
MN1382
MN13821
MN13822
N-channel open drain output
Detection Ranks (on Voltage)
Rank
C
E
F
Detection Voltage for Drop in Power Supply Voltage (V
DL
)
M
ain
Di
sc te
on na
tin nc
ue e/
d
min
2.0
2.1
2.2
max
2.2
2.3
2.4
min
D
2.3
2.5
V
50
G
H
J
K
L
2.4
2.5
2.8
2.6
2.7
3.1
2.6
2.9
V
50
3.0
3.3
M
N
P
Q
R
S
T
3.2
3.5
3.7
3.4
3.6
3.9
3.8
4.1
V
100
4.0
4.3
4.2
4.5
4.4
4.7
U
4.6
4.9
Unit
Detection Voltage Hysteresis Width (∆VD)
max
Unit
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300
mV
300
mV
300
mV
3
Ma
int
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/D
isc
on
tin
ue
MN1380 Series
Block Diagram
Microcomputer Peripheral LSIs
2
Voltage
Reference 1
V
DD
+
Comparator
–
Level Converter
*1
Output Circuit
1
OUT
Note *1: Circuits vary slightly depending on the output type (CMOS output, N-channel open drain output, or inverted CMOS
output)
Pin Descriptions
Symbol
OUT
V
DD
V
SS
Pin No.
1
2
3
Function Description
Reset signal output pin
Power supply pin
Ground pin
4
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3
V
SS
Ma
int
en
an
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M
ain
Di
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+
–
Voltage
Reference 2
Comparator
/D
isc
on
tin
ue
Microcomputer Peripheral LSIs
Absolute Maximum Ratings
Parameter
Power supply voltage
Output voltage
Operating ambient temperature
Storage temperature
V
SS
=0V, Ta=25˚C
MN1380 Series
Symbol
V
DD
V
O
Ta
T
stg
V
SS
=0V, Ta=25˚C
Rating
7.0
– 0.3 to V
DD
+0.3
–20 to +70
–55 to +125
Unit
V
V
˚C
˚C
M
ain
Di
sc te
on na
tin nc
ue e/
d
Parameter
Power supply
voltage
Symbol
V
DD
Conditions
See Figures 1 and 4.
min
1.5
typ
Recommended Operating Conditions
max
6.0
Unit
V
Electrical Characteristics
1) DC Characteristics
V
SS
=0V, Ta=–20˚C to +70˚C
Parameter
Power supply current
Symbol
Conditions
I
DD
V
DD
= 5 V
*1
Load resistance = 10 kW
Ta=25˚C
Detection voltage for drop
in power supply voltage
width
*2
*2
V
DL
Detection voltage hysteresis
"H" level output voltage
∆VD
V
OH
See Figures 1 and 4.
CMOS output I
OH
=– 40µA
Inverted
V
DD
=1.8V
CMOS output I
OH
=– 0.5mA
N-channel open
drain output
"L" level output voltage
V
OL
Inverted
Ma
int
en
an
ce
/D
Notes
*1: This includes the output pin's leakage current.
*2: For particulars, see the detection voltage rank table.
isc
on
tin
CMOS output I
OH
=0.3mA
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min
typ
1
max
5
Unit
µA
V
*2
*2
*2
*2
mV
0.8V
DD
0.8
V
DD
V
DD
0.4
0.6
V
–1.5
V
DD
=1.8V
V
SS
V
SS
I
OL
=0.7mA
V
DD
=6.0V
V
ue
5
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