R
EM MICROELECTRONIC -
MARIN SA
V6340
Ultra Low Cost 3-Pin Microprocessor Reset
Description
The V6340 monitors the supply voltage of any electronic
system, and generates the appropriate Reset signal. The
threshold must be chosen to the minimum allowed voltage
which guarantees the good functionality of the system. As
long as V
DD
stays upside this voltage level, the output stays
inactive. If V
DD
drops below V
TH
, the output gets active.
The threshold voltage may be obtained in different versions:
2.6V, 3.0V, 3.7V and 4.4V.
Applications
Applications needing a voltage detection:
Computer electronics
White / Brown goods
Industrial electronics
Telecom systems
Hand-held systems
Features
SOT-23 and TO-92 package
Reset output state guaranteed down to V
DD
= 1V @
25°C
Low supply current: stays stable during switching
versions B, N, N:
typ. 19µA at V
DD
= 5V
other versions:
typ. 38µA at V
DD
= 5V
±2.5% voltage threshold accuracy
High noise immunity
No external components required
Push-pull or Open drain output
Pin compatible with MAX 809 in SOT-23, by appropriate
layout on PCB
Pin compatible with MC 33164 in TO-92
TTL output compatibility
Typical Operating Configuration
V
DD
Pin Assignment
TO-92
View
Flat Front
SOT23-3L
V
SS
V6340
3
3
1
V
DD
V6340
V
SS
RES
or
RES
Micro-
processor
1
2
V6340
2
RES or
RES
V
DD
GND
RES V
DD
V
SS
or
RES
Fig. 1
Fig. 2
Copyright © 2005, EM Microelectronic-Marin SA
05/07 – rev.L
1
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R
V6340
Absolute Maximum Ratings
Parameter
Voltage at V
DD
to V
SS
Minimum voltage at RES or
RES
Maximum voltage at RES or
RES
Storage Temperature Range
Symbol
V
DD
V
min
V
max
T
STO
Conditions
-0.3V to +8V
V
SS
– 0.3V
V
DD
+ 0.3V
-65°C to +150°C
Table 1
Handling Procedures
This device has built-in protection against high static
voltages or electric fields; however, it is advised that normal
precautions be taken as for any other CMOS component.
Unless otherwise specified, proper operation can only occur
when all terminal voltages are kept within the voltage range.
Operating Conditions
Parameter
Symbol Min
1)
Operating Temperature
T
A
-40
2)
Positive Supply Voltage
V
DD
1
1)
Stresses above these listed maximum ratings may cause
permanent damages to the device. Exposure beyond
specified operating conditions may affect device reliability or
cause malfunction.
Max
+125
5.5
Unit
°C
V
Table 2
The maximum operating temperature is confirmed by
sampling at initial device qualification. In production, all
devices are tested at +25°C
2)
V
DD
= 1V guaranteed at +25°C (see Fig. 14 for more
information)
Electrical Characteristics
T
A
= +25°C, unless otherwise specified
Parameter
Supply current
Threshold voltage
Threshold hysteresis
RES Output Low Level
Symbol
I
DD
V
TH
V
TH
V
TH
V
HYS
V
OL
V
OL
V
OL
V
OL
V
OH
V
OH
V
OH
V
OH
I
LEAK
Symbol
I
DD
V
TH
V
HYS
Test Conditions
V
DD
= 5V, output open
C, I, O
D, J, P
F, L, R
V
DD
= 1.6V, I
OL
= 1mA
V
DD
= 2.5V, I
OL
= 2mA
V
DD
= 3.5V, I
OL
= 3mA
V
DD
= 5V, I
OL
= 4mA
V
DD
= 1.6V, I
OH
= -1mA
V
DD
= 2.5V, I
OH
= -1.5mA
V
DD
= 3.5V, I
OH
= -2.5mA
V
DD
= 5V, I
OH
= -3.5mA
V
DD
= 5V
Test Conditions
V
DD
= 5V, output open
B, H, N
Min.
2.94
3.62
4.27
Typ.
38
3.02
3.72
4.39
5
200
195
198
185
1.36
2.3
3.27
4.76
0.005
Typ.
19
2.65
32
Max.
50
3.10
3.82
4.51
270
250
250
250
Unit
µA
V
V
V
mV
mV
mV
mV
mV
V
V
V
V
µA
Unit
µA
V
mV
Table 3
RES Output High Level
1.25
2.2
3.15
4.65
Output leakage current
1)
Only for version B, H and N
Parameter
Supply current
Threshold voltage
Threshold hysteresis
1)
1
Max.
31
2.74
Min.
2.56
Only for Open drain versions
Timing Waveform
Block Diagram
V
DD
Voltage
Reference
-
+
RES or
RES
V
SS
Fig.3
Fig.4
Copyright © 2005, EM Microelectronic-Marin SA
05/07 – rev.L
2
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R
V6340
Typical Characteristics
Copyright © 2005, EM Microelectronic-Marin SA
05/07 – rev.L
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R
V6340
Copyright © 2005, EM Microelectronic-Marin SA
05/07 – rev.L
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R
V6340
Typical Applications
Copyright © 2005, EM Microelectronic-Marin SA
05/07 – rev.L
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