MITSMI PST573EM, PST573F, PST573FM, PST573G, PST573GM Datasheet
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MITSUMI |
System Reset PST573 |
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System Reset
Monolithic IC PST573
Outline
This IC functions 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. This ultra-low current consumption high reset type system reset IC was developed using high resistance process and low current circuit design technology.
Features
1. |
Ultra-low current consumption |
ICCH=450µA typ. |
ICCL=1µA typ. |
2. |
Low operating limit voltage |
0.65V typ. |
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3. |
Output current high for ON |
-6mA typ. |
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4. |
Hysteresis voltage provided in detection voltage |
50mV typ. |
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5. |
10 ranks of detection voltage |
PST573 |
C : 4.5V typ. |
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D : 4.2V typ. |
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E : 3.9V typ. |
F : 3.6V typ.
G : 3.3V typ.
H : 3.1V typ. I : 2.9V typ.
J: 2.7V typ.
K: 2.5V typ.
L: 2.3V typ.
Package
MMP-3A (PST573
M) TO-92A (PST573
)
*
contains detection voltage rank .
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.
Pin Assignment
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1 |
VCC |
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1 |
3 |
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1 |
VCC |
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2 |
GND |
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2 |
GND |
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3 |
VOUT |
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2 |
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3 |
VOUT |
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1 |
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3 |
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MMP-3A |
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TO-92A |
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MITSUMI |
System Reset PST573 |
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Equivalent Circuit Diagram
Absolute Maximum Ratings (Ta=25°C)
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Item |
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Symbol |
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Rating |
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Units |
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Storage temperature |
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TSTG |
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-40~+125 |
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°C |
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Operating temperature |
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TOPR |
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-20~+75 |
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°C |
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Power supply voltage |
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VCC max. |
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-0.3~10 |
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V |
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Allowable loss |
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Pd |
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200(MMP-3A) |
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mW |
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300(TO-92A) |
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Electrical Characteristics |
(Ta=25°C) (Except where noted otherwise, resistance unit is Ω ) |
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Item |
Symbol |
Measurement |
Measurement conditions |
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Min. |
Typ. |
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Max. |
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Units |
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circuit |
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PST573C |
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4.3 |
4.5 |
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4.7 |
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PST573D |
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4.0 |
4.2 |
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4.4 |
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PST573E |
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3.7 |
3.9 |
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4.1 |
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RL=4.7k |
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PST573F |
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3.4 |
3.6 |
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3.8 |
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PST573G |
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3.1 |
3.3 |
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3.5 |
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Detection voltage |
VS |
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1 |
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< |
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V |
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VOL = VCC-0.4V |
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PST573H |
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2.9 |
3.1 |
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3.3 |
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VCC=H |
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L |
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PST573I |
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2.75 |
2.90 |
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3.05 |
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PST573J |
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2.55 |
2.70 |
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2.85 |
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PST573K |
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2.35 |
2.50 |
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2.65 |
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PST573L |
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2.15 |
2.30 |
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2.45 |
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Hysteresis voltage |
VS |
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1 |
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RL=4.7kΩ |
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25 |
50 |
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100 |
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mV |
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VCC=L |
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H |
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L |
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Detection voltage |
VS/ T |
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1 |
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RL=4.7kΩ |
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±0.01 |
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%/°C |
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temperature coefficient |
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Ta=-20°C~+75°C |
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High level output voltage |
VOH |
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1 |
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VCC=VS min. -0.05V |
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VCC |
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V |
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RL=4.7kΩ |
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-0.4 |
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Output leakage current |
IOH |
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1 |
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VCC=7.5V |
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±0.1 |
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µA |
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Circuit current while on |
ICCL |
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1 |
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VCC=VS min. -0.05V |
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450 |
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700 |
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µA |
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RL=∞ |
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Circuit current while off |
ICCH |
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1 |
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VCC=VS typ. /0.85V |
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1.0 |
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1.8 |
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µA |
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RL=∞ |
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"H"transport delay time |
tpLH |
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2 |
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RL=4.7kΩ |
*1 |
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25 |
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60 |
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µS |
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CL=100pF |
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"L"transport delay time |
tpHL |
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2 |
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RL=4.7kΩ |
*1 |
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8 |
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20 |
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µS |
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CL=100pF |
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Operation limit voltage |
VopL |
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1 |
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RL=4.7kΩ |
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0.65 |
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0.85 |
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V |
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VOL = VCC-0.4V |
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Output current while on I |
IOL I |
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1 |
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VCC=VS min.-0.05V |
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-2.0 |
-6.0 |
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mA |
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RL=0 |
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Output current while on II |
IOL II |
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1 |
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Ta=-20°C~+75°C *2 |
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-1.5 |
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mA |
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RL=0 |
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*1 : tpLH : VCC=(VS typ.-0.4V)
(VS typ.+0.4V), tpHL : VCC=(VS typ.+0.4V)
(VS typ.-0.4V)
*2 : VCC=VS min.-0.15V
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