MITSMI PST591JM, PST591K, PST591KM, PST592C, PST592CM Datasheet
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MITSUMI |
System Reset PST591~595 |
System Reset
Monolithic IC PST591~595 Series
Outline
These ICs function in a variety of CPU systems and other logic systems, to detect power supply voltage and reset the system accurately when power is turned on or interrupted, and has a built-in fixed delay time generating circuit. This series has been represented in the past by PST574/PST575, but these new low reset type system reset ICs expand the delay time series with a counter timer using an analog/digital hybrid circuit.
Features
1. |
Fixed delay time setting by counter timer |
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Excellent delay time temperature characteristics |
±800ppm/°C |
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2. |
Low operating limit voltage |
0.65V typ. |
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3. |
Hysteresis voltage provided in detection voltage |
50mV typ. |
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4. |
Current consumption for no-load |
ICCL=300µA typ. |
ICCH=200µA typ. |
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5. |
5 delay time products available |
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PST591 |
50mS |
PST594 400mS |
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PST592 100mS |
PST595 800mS |
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PST593 200mS |
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6. |
Each product has 9 detection voltage ranks. |
C : 4.5V typ. |
H : 3.1V typ. |
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D : 4.2V typ. |
I : 2.9V typ. |
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E : 3.9V typ. |
J : 2.7V typ. |
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F : 3.6V typ. |
K : 2.5V typ. |
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G : 3.3V typ. |
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Package
MMP-4A (PST59 |
M) |
TO-92A (PST59 |
) |
*
contains detection voltage rank.
(MMP-4A has a manual reset pin, which should be set at GND or NC during normal operation.)
Applications
1.Reset circuits in microcomputers, CPUs and MPUs
2.Logic circuit reset circuits.
3.Battery voltage check circuits.
4.Back-up power supply switching circuits.
5.Level detection circuits.
6.Mechanical reset circuits
MITSUMI |
System Reset PST591~595 |
Pin Assignment
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1 |
VOUT |
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1 |
VCC |
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4 |
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3 |
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2 |
Manual |
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Reset |
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2 |
GND |
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3 |
VOUT |
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1 |
2 |
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3 |
VCC |
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4 |
GND |
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1 |
2 |
3 |
MMP-4A |
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TO-92A
Equivalent Circuit Diagram
Absolute Maximum Ratings (Ta=25°C)
Item |
Symbol |
Rating |
Units |
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Storage temperature |
TSTG |
-40~+125 |
°C |
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Operating temperature |
TOPR |
-20~+75 |
°C |
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Power supply voltage |
VCC max. |
-0.3~10 |
V |
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Manual reset input voltage |
VRES max. |
-0.3~10 |
V |
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Allowable loss |
Pd |
200 (MMP-4P) |
mW |
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300 (TO-92) |
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