TECHNICAL DATA
Micro Monitor Supply Control
The IN1705 is designed to control power supply and to start mi-
crocontroller and microprocessor systems. It is used for securing
stable functioning of the system when starting and halting the device
as well as in the case of the supply voltage drops.
Manufactured in 8-pin SOIC/DIP package MS-012AA.
LSI features:
•
•
•
•
•
rated supply voltage 5.0 V;
generation of reset signal when power supply is on for
correct start of microprocessor;
generation of reset signal when power supply drops below
the operating one to avoid incorrect functioning of
microprocessor;
generation of reset signal when pushing reset button;
possibility to program threashold voltage
at which reset signal is generated.
IN1705
ORDERING INFORMATION
IL1705N Plastic
IL1705D
SOIC
T
A
= -40° to 85° C for all packages.
The IN1705 contains a source of reference voltage,
two analog comparators, watchdog timer, digital sampler,
digital delay..
Functions:
•
•
•
•
generation of reset signal per fixed level of supply
voltage;
generation of reset signal from external “Reset” button;
generation of signal of watchdog timer status;
emergency interruption of primary power source.
PBRST 1
8
7
6
5
WDS
RST
ST
NMI
Vcc
2
GND
3
IN 4
Fig. 2 – Pin assignment
1
IN1705
Industrial temperature range
Industrial temperature range - 40°С to + 85°С.
Table 1 – Recommended operating conditions
Symbol
V
СС
V
IH
V
IL
Т
A
Parameter
min
Supply voltage
Input voltage, high level
Input voltage, low level
Operating temperature range
1.2
2.0
-0.03
-40
Typical
max
5.5
V
СС
+0.3
0.5
85
V
V
V
°С
Units
Table 2 – Absolute maximum ratings
Symbol
V
СС
V
IH
V
IL
T
stg
Parameter
min
Supply voltage
Input voltage, high level
Input voltage, low level
Storage temperature
-0.5
-
-0.5
-60
Typical
max
7.0
V
СС
+0.5
-
125
V
V
V
°С
Units
Exposure to absolute maximum rating conditions may affect reliability of IC and its functional operation.
Upon removing the absolute maximum ratings conditions, functional operation is guaranteed in recommended operat-
ing conditions.
2
IN1705
Table 3 – DC electrical characteristics (T
A
= - 40° to + 85°С)
Symbol
V
IL
V
IH
7I
OL
Parameter
Input voltage, low level
Test conditions
min
Typical
max
Units
I
OH
I
OH1
V
OH
I
LIL1
I
LIL2
I
LIL3
I
LIH
I
СС
V
CCTP
V
TP
V
СС
=from 2.4 to
5.5V
Input voltage, high level
V
СС
=from 2.4 to
5.5V
Output current, low
V
СС
=from 2.4 to
5.5V
level (NMI, RST)
V
OL
= 0.4V
Output current, high
V
СС
=from 4.5 to
level (WDS, NMI)
5.5V
V
OH
= 2.4V
Output current, high
V
CC
=from 5.0 to
level, (RST)
5.5V
V
OH
=2.4V
Output voltage, high level V
СС
=from 5.0 to
(RST)
5.5V
I
OH
= -500мкА
Input leakage current,
V
СС
=from 1.2 to
low level (IN)
5.5V
V
IL
= 0 V
Input leakage current,
V
СС
= 5.5V
low level (ST)
V
IL
= 0 V
Input leakage current,
V
СС
= 5.5V
low level (PBRST)
V
IL
= 0 V
Input leakage current,
V
СС
=from 1.2 to
high level
5.5V
V
IH
= V
СС
Operating current
V
СС
=from 1.2 to
5.5V
V
IL
=0 V, V
IH
=V
CC
V
CC
trip point
V
IL
= 0 V, V
IH
=V
CC
IN input trip point
V
СС
=5.0 V
V
IL
= 0 V, V
IH
=V
CC
-
2.0
10.0
0.5
V
V
-
mA
-100
-1000
µA
-10
-
mA
V
СС
-0.3
-
V
-
-1.0
µA
-10
-50
-
-100
-450
1.0
µA
µA
µA
-
60
µA
4.5
1.2
4.75
1.3
V
V
3
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