MITSUMI
IC for CMOS System Reset PST37XXU
IC for CMOS System Reset
Monolithic IC PST37XXU Series
Outline
July 13, 2001
This CMOS output type system reset IC, developed using the CMOS. Super low consumption current of
1.0µA typ. (PST3709 ~ PST3719) has been achieved through use of the CMOS process. Also, detection
voltage is high precision detection of ±2%.
Features
1. Super low consumption current
2. High precision detection voltage
3. Operating range
4. Wide operating temperature range
5. Detection voltage
1.0µA typ. (when V
DD
= (-V
DET
) + 2.0V) PST3709 ~ PST3719
±2%
0.7 ~ 10V
-30 ~ +85°C
0.9 ~ 6.0V (0.1V step)
Package
SC-82ABA, SC-82ABB
Applications
1. Microcomputer, CPU, MPU reset circuits
2. Logic circuit reset circuits
3. Battery voltage check circuits
4. Back-up circuit switching circuits
5. Level detection circuits
Pin Assignment
4
3
1
2
3
4
OUT
V
DD
NC
GND
1
2
SC-82ABA
SC-82ABB
(TOP VIEW)
MITSUMI
IC for CMOS System Reset PST37XXU
Electrical Characteristics
(Ta=25˚C)
Item
Hysteresis Voltage
Supply Current 1
Supply Current 2
V
HYS
(V)
I
SS
1 (µA)
I
SS
2 (µA)
Test Circuit 2
Test Circuit 1
Test Circuit 1
Min.
Typ. Max. Condition Typ. Max. Condition Typ. Max.
0.027 0.045 0.063
0.9
2.7
1.5
3.7
0.030 0.050 0.070
0.033 0.055 0.077
1.8
4.5
0.036 0.060 0.084
0.039 0.065 0.091
2.0
5.0
0.042 0.070 0.098
1.0
3.0
0.045 0.075 0.105
0.048 0.080 0.112
2.5
5.5
0.051 0.085 0.119
V
DD
=
0.054 0.090 0.126 (-V
DET
)
-0.10V
0.057 0.095 0.133
0.060 0.100 0.140
0.063 0.105 0.147
0.066 0.110 0.154
3.0
6.0
0.069 0.115 0.161
0.072 0.120 0.168
1.1
3.3
0.075 0.125 0.175
0.078 0.130 0.182
0.081 0.135 0.189
3.5
7.0
0.084 0.140 0.196
0.087 0.145 0.203
0.090 0.150 0.210
0.093 0.155 0.217
0.096 0.160 0.224
4.0
8.0
0.099 0.165 0.231
V
DD
=
V
DD
0.102 0.170 0.238
(-V
DET
)
1.2
3.6
(-V
DET
)
0.105 0.175 0.245
-0.13V
+2.0V
0.108 0.180 0.252
0.111 0.185 0.259
4.5
9.0
0.114 0.190 0.266
0.117 0.195 0.273
0.120 0.200 0.280
0.123 0.205 0.287
0.126 0.210 0.294
5.0 10.0
V
DD
=
0.129 0.215 0.301
(-V
DET
)
0.132 0.220 0.308
-0.16V
1.3
3.9
0.135 0.225 0.315
0.138 0.230 0.322
0.141 0.235 0.329
5.5 11.0
0.144 0.240 0.336
0.147 0.245 0.343
0.150 0.250 0.350
0.153 0.255 0.357
0.156 0.260 0.364
6.0 12.0
0.159 0.265 0.371
0.162 0.270 0.378
1.4
4.2
V
DD
=
0.165 0.275 0.385
(-V
DET
)
0.168 0.280 0.392
-0.20V
0.171 0.285 0.399
6.5 13.0
0.174 0.290 0.406
0.177 0.295 0.413
0.180 0.300 0.420
Product
Name
PST3709
PST3710
PST3711
PST3712
PST3713
PST3714
PST3715
PST3716
PST3717
PST3718
PST3719
PST3720
PST3721
PST3722
PST3723
PST3724
PST3725
PST3726
PST3727
PST3728
PST3729
PST3730
PST3731
PST3732
PST3733
PST3734
PST3735
PST3736
PST3737
PST3738
PST3739
PST3740
PST3741
PST3742
PST3743
PST3744
PST3745
PST3746
PST3747
PST3748
PST3749
PST3750
PST3751
PST3752
PST3753
PST3754
PST3755
PST3756
PST3757
PST3758
PST3759
PST3760
Detecting Voltage
-V
DET
(V)
Test Circuit 2
Min.
Typ. Max.
0.882 0.900 0.918
0.980 1.000 1.020
1.078 1.100 1.122
1.176 1.200 1.224
1.274 1.300 1.326
1.372 1.400 1.428
1.470 1.500 1.530
1.568 1.600 1.632
1.666 1.700 1.734
1.764 1.800 1.836
1.862 1.900 1.938
1.960 2.000 2.040
2.058 2.100 2.142
2.156 2.200 2.244
2.254 2.300 2.346
2.352 2.400 2.448
2.450 2.500 2.550
2.548 2.600 2.652
2.646 2.700 2.754
2.744 2.800 2.856
2.842 2.900 2.958
2.940 3.000 3.060
3.038 3.100 3.162
3.136 3.200 3.264
3.234 3.300 3.366
3.332 3.400 3.468
3.430 3.500 3.570
3.528 3.600 3.672
3.626 3.700 3.774
3.724 3.800 3.876
3.822 3.900 3.978
3.920 4.000 4.080
4.018 4.100 4.182
4.116 4.200 4.284
4.214 4.300 4.386
4.312 4.400 4.488
4.410 4.500 4.590
4.508 4.600 4.692
4.606 4.700 4.794
4.704 4.800 4.896
4.802 4.900 4.998
4.900 5.000 5.100
4.998 5.100 5.202
5.096 5.200 5.304
5.194 5.300 5.406
5.292 5.400 5.508
5.390 5.500 5.610
5.488 5.600 5.712
5.586 5.700 5.814
5.684 5.800 5.916
5.782 5.900 6.018
5.880 6.000 6.120
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