PST87XA [MITSUMI]
CMOS System Reset IC built-in delay time circuit;
| 型号： | PST87XA |
| 厂家： | 
MITSUMI ELECTRONICS, CORP. |
| 描述： | CMOS System Reset IC built-in delay time circuit |
| 文件： | 总15页 (文件大小：97K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
CMOS System Reset IC built-in delay time circuit
Monolithic IC PST87XX, 88XX Series
Outline
This IC is a system reset IC builtin delay time circuit.
PST87/88 is not required with an external capacitor, and then can use a small package.
Therefore a space of PC board can be small.
Features
1. Operating supply voltage
2. Supply current
1.0-5.5V
1µA typ.
3. Reset threshold range
4. Reset threshold accuracy
5. Reset hysteresis
1.6-4.6V
1.5ꢀ
50mV typ.
6. Reset active timeout period
7. Output type
20/50/100/200ms
PST87 : CMOS output
PST88 : Open drain output
PST87/88XA : NO
PST87/88XR : YES
8. Manual RESET
Packages
SSON-4B
SOT-25A
SC-82
Applications
1. Reset circuits for microcomputers, CPUs and MPUs
2. Reset circuits for logic circuits
3. Battery voltage check circuits
4. Back-up power supply switching circuits
5. Level detection circuits
6. Mechanical reset circuits
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Block Diagram
CMOS output / Manual RESET : NO
PST87XA
VDD
DELAY
GENERATOR
RESET
GND
CMOS output / Manual RESET : YES
PST87XR
VDD
DELAY
GENERATOR
RESET
MR
GND
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Open-Drain output / Manual RESET : NO
PST88XA
VDD
RESET
DELAY
GENERATOR
GND
Open-Drain output / Manual RESET : YES
PST88XR
VDD
RESET
MR
DELAY
GENERATOR
GND
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Pin Assignment
PST87XA, PST88XA
4
3
1
2
3
4
GND
NC
VDD
1
2
3
4
5
NC
GND
NC
RESET
VDD
5
1
4
3
2
RESET
1
2
SOT-25A
(TOP VIEW)
SSON-4B
(TOP VIEW)
4
3
2
1
2
3
4
NC
GND
RESET
VDD
1
SC-82
(TOP VIEW)
PST87XR, PST88XR
4
3
1
2
3
4
GND
MR
VDD
1
2
3
4
5
MR
GND
NC
RESET
VDD
5
1
4
2
3
RESET
1
2
SOT-25A
(TOP VIEW)
SSON-4B
(TOP VIEW)
4
3
2
1
2
3
4
MR
GND
RESET
VDD
1
SC-82
(TOP VIEW)
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Pin Description
PST87XA, PST88XA
SSON-4B
SOT-25A
Pin No. Pin name
Functions
No Connection
Pin No. Pin name
Functions
1
2
3
4
5
NC
GND
NC
1
2
3
4
GND
NC
GND Pin
GND Pin
No Connection
No Connection
VDD
VDD Pin / Voltage Detect Pin
Reset Signal Output Pin
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
RESET
VDD
RESET
SC-82
Pin No. Pin name
Functions
No Connection
1
2
3
4
NC
GND
RESET
VDD
GND Pin
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
PST87XR, PST88XR
SSON-4B
SOT-25A
Pin No. Pin name
Functions
Manual RESET Pin
GND Pin
Pin No. Pin name
Functions
GND Pin
1
2
3
4
5
MR
GND
NC
1
2
3
4
GND
MR
Manual RESET Pin
VDD Pin / Voltage Detect Pin
Reset Signal Output Pin
No Connection
VDD
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
RESET
VDD
RESET
SC-82
Pin No. Pin name
Functions
Manual RESET Pin
GND Pin
1
2
3
4
MR
GND
RESET
VDD
Reset Signal Output Pin
VDD Pin / Voltage Detect Pin
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Absolute Maximum Ratings
Item
Symbol
VDD max.
RESET
IDD
Ratings
Units
V
Supply voltage
Output voltage
Input current (IDD)
Output current
-
-
0.3~+6
0.3~+6
20
V
mA
mA
IOUT
20
150 (Alone) SOT-25A, SC-82
330 (Alone) SSON-4B (note)
Power dissipation
PD
mW
Operating temperature
Storage temperature
TOPR
TSTG
-
40~+85
°C
°C
-
65~+150
note : With PC board of glass epoxy. (The tab pin is not connected with PC board.)
PC board size of 110×40×0.8mm
Recommended Operating Conditions
Item
Symbol
Ratings
40~+85
1.0~5.5 (Ta=0~+70°C)
1.2~5.5 (Ta= 40~+85°C)
Units
Operating temperature
TOPR
-
°C
Supply voltage
VDD
V
-
Pin Explanations
Model name
CMOS output
PST87
Open-Drain output
PST88
a
b
c
d
e
a
b
c
d
e
a
b
c
d
e
TDEL Rank
20ms
Manual RESET
VDET Rank
160 VDET=1.60V
Package Code Packing Specifications
0
1
2
3
A
R
No
Yes
R
N
U
SSON-4B
SOT-25A
SC-82
R
L
R Housing
L Housing
50ms
100ms
200ms
460 VDET=4.60V
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
(Except where noted otherwise Ta=25°C)
Electrical Characteristics
PST87XX
Item
Symbol
Test Condition
Min.
Typ.
Max. Units Circuit
Reset Threshold
VTH
Ta=+25°C
VTH−1.5%
VTH
VTH+1.5%
V
ppm/°C
mV
1
1
1
2
Reset Threshold
Temp. Coefficient
VTH/°C
Ta=
-40~+85°C
50
50
Reset Threshold Hysteresis
VTH
VDD =0V VTH+1V 0V
VDD =VTHTYP/0.85
30
100
2.0
Supply Current
IDD
0.5
1.0
µA
PST87
160N
VDD =VTH-0.1V
IOL=1.2mA
PST87
PST87
350N
360N
RESET Output Voltage L
VOL
0.4
V
V
3
VDD =VTH-0.1V
IOL=3.2mA
PST87
PST87
460N
160N
VDD =VTH+0.1V
IOH=150µA
PST87
PST87
230N
240N
VDD =VTH+0.1V
RESET Output Voltage H
VDD to Reset Delay
VOH
VDD =×0.8
0.4
20
4
IOH=500µA
PST87
PST87
350N
360N
VDD =VTH+0.1V
IOH=800µA
PST87
460N
V
DD =(VTH+0.4V) (VTH−0.4V)
(note2)
tRD
4.0
µs
5
5
12
30
60
20
50
100
200
30
75
150
300
Reset Active Timeout
Period
tRP
V
DD =(VTH−0.4V) (VTH+0.4V)
ms
120
M/R Terminal
Input High Voltage
VIH
VIL
tMR
(note3)
(note3)
V
DD =×0.7
V
V
6
6
7
M/R Terminal
Input Low Voltage
VDD =×0.2
(note2)
(note3)
M/R Minimum Input
Pulse wide
1
µs
note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
note2 : The parameter is guaranteed by design.
note3 : PST87XR applies to this item.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
PST88XX
Item
Symbol
Test Condition
Min.
Typ.
Max. Units Circuit
Reset Threshold
VTH
Ta=+25°C
VTH−1.5%
VTH
VTH+1.5%
V
ppm/°C
mV
1
1
1
2
Reset Threshold
Temp. Coefficient
VTH/°C
Ta=
-40~+85°C
50
50
Reset Threshold Hysteresis
VTH
30
100
2.0
Supply Current
IDD
VDD =VTHTYP/0.85
0.5
1.0
µA
PST88
160N
VDD =VTH-0.1V
IOL=1.2mA
PST88
PST88
350N
360N
RESET Output Voltage L
VDD to Reset Delay
VOL
0.4
20
V
3
VDD =VTH-0.1V
IOL=3.2mA
PST88
460N
tRD
VDD =(VTH+0.4V) (VTH−0.4V)
4.0
µs
4
4
12
30
60
20
50
100
200
30
75
150
300
Reset Active Timeout
Period
tRP
V
DD =(VTH−0.4V) (VTH+0.4V)
ms
120
Output Leakage
Current
ILEAK
VIH
VDD =VOL=5.5V
(note3)
0.1
µA
V
5
6
6
7
M/R Terminal
Input High Voltage
V
DD =×0.7
M/R Terminal
Input Low Voltage
VIL
(note3)
V
DD =×0.2
V
(note2)
(note3)
M/R Minimum Input
Pulse wide
tMR
1
µs
note1 : This device is tested at Ta=25°C, over temperature limits guaranteed by desigh only.
note2 : The parameter is guaranteed by design.
note3 : PST88XR applies to this item.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Measuring Circuit
* 1 - 5 in the circuit diagram is pin number for the SOT-25A package.
PST87XX
(1)
(3)
(5)
(6)
(2)
A
VDD
VDD
5
5
2
RL
VIN
VIN
1
4
1
4
M/R
RESET
M/R
RESET
V
2
GND
GND
(4)
VDD
VDD
5
2
5
2
IOL
IOL
VIN
VIN
1
4
OUT
1
4
OUT
GND
M/R
M/R
V
V
VOL
VOL
GND
Input Voltage
VTH
VTH–0.4V
VDD
GND
5
2
VIN
1
4
100ꢀ
50ꢀ
M/R
RESET
Output Voltage
GND
GND
tRP
tRD
(7)
RL=4.7k
VDD
VDD
5
2
5
2
RESET
RESET
4
VIN
VIN
1
4
1
M/R
M/R
V
V
GND
GND
VM/R
VM/R
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
* 1 - 5 in the circuit diagram is pin number for the SOT-25A package.
PST88XX
(1)
(3)
(4)
(5)
(2)
A
RL=4.7k
RESET
VDD
VDD
5
2
5
2
RESET
4
VIN
VIN
1
4
1
M/R
M/R
V
GND
GND
VDD
5
2
RESET
4
VIN
1
M/R
V
VOL
IOL
GND
VTH+0.4V
VTH–0.4V
Input Voltage
VTH
RL=4.7k
VDD
5
2
GND
RESET
4
VIN
100ꢀ
50ꢀ
GND
1
M/R
Output Voltage
GND
tRP
tRD
VDD
5
2
ILEAK
RESET
4
VIN
A
1
M/R
VOL
GND
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
(7)
(6)
RL=4.7k
RL=4.7k
VDD
VDD
5
2
5
2
RESET
RESET
VIN
VIN
1
4
1
4
M/R
M/R
V
V
GND
GND
VM/R
VM/R
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Timing Chart
PST87XX, 88XX
Active-Low Output Type
V
VTH
VTH + VTH
VDD
VTH
V
tRP
tRP
RESET
V
M/R
tRP
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
Application Circuits
* 2 - 4 in the circuit diagram is pin number for the SC-82AB package.
PST87XX
VIN
VDD
4
VIN
Logic
1
MR
3
System
RESET
2
GND
* 2 - 4 in the circuit diagram is pin number for the SC-82AB package.
PST88XX
VIN
VDD
4
VIN
Logic
1
MR
3
System
RESET
2
GND
•
•
•
If the impedance of VDD line is high enough, connect a capacitor between VDD and GND terminal of the IC.
We shall not be liable for any trouble or damage caused by using this circuit.
In the event a problem which may affect industrial property or any other rights of us or a third party is
encountered during the use of information described in these circuit, Mitsumi Electric Co., Ltd. shall not be
liable for any such problem, nor grant a license therefore.
VIN
VIN
VDD
VDD
4
4
PST
PST
3
3
88XX
87XX
RESET
RESET
2
2
GND
GND
•
•
Please do not put resistance on the PST87XX with circuits where resistance is put in the line VIN as in the
above illustration.
Please be careful as there is a possibility of circuit oscillation with PST88XX.
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
(Except where noted otherwise VCC=5.0V, RICHG=2.32k , ROSC=100k , Ta=25°C)
Ω
Ω
Characteristics
Detecting Voltage
Supply Current
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
2.0
1.6
1.2
0.8
0.4
0.0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
1
2
3
4
5
6
Input Voltage (V)
Input Voltage (V)
Detecting Voltage
-
Temperature
Hysteresis Voltage - Temperature
3.10
100
80
60
40
20
0
3.00
2.90
2.80
2.70
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (ºC)
Temperature (ºC)
Supply Current
-
Temperature
2.0
1.6
1.2
0.8
0.4
0.0
−40 −20
0
20 40 60 80 100
Temperature (ºC)
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
MITSUMI
CMOS System Reset IC built-in delay time circuit PST87XX, 88XX Series
RESET Output Voltage
-
Temperature
Output Leakage Current - Temperature
0.20
0.15
0.10
0.05
0.00
0.10
0.08
0.06
0.04
0.02
0.00
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (ºC)
Temperature (ºC)
Reset Active Timeout Period
-
Temperature
VDD to Reset Deray - Temperature
300
10
8
6
4
2
0
250
200
150
100
−40 −20
0
20 40 60 80 100
−40 −20
0
20 40 60 80 100
Temperature (ºC)
Temperature (ºC)
• Any products mentioned in this catalog are subject to any modification in their appearance and others for improvements without prior notification.
• The details listed here are not a guarantee of the individual products at the time of ordering. When using the products, you will be asked to check their specifications.
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