RX
-
8581
SA
/
JE
/
NB
Page - 3
MQ372-02
4. Absolute Maximum Ratings
GND
=
0
V
Item
Symbol
Condition
Rating
Unit
Supply voltage
V
DD
Between
V
DD
and GND
−
0.3 to +7.0
V
Input voltage (1)
V
IN1
FOE
pin
GND
−
0.3 to V
DD
+0.3 V
Input voltage (2)
V
IN2
SCL and SDA pins
GND
−
0.3 to +8.0
V
Output voltage (1)
V
OUT1
FOUT
pin
GND
−
0.3 to V
DD
+0.3 V
Output voltage (2)
V
OUT2
SDA and /INT pins
GND
−
0.3 to +8.0
V
Storage temperature
T
STG
When stored separately,
without packaging
−
55 to +125
°
C
5. Recommended Operating Conditions
GND
=
0
V V
Item
Symbol
Condition
Min.
Typ.
Max.
Unit
Operating supply voltage
V
DD
−
1.8 3.0 5.5 V
Clock supply voltage
V
CLK
−
1.6 3.0 5.5 V
Operating temperature
T
OPR
No
condensation
−
40
+25 +85
°
C
6. Frequency Characteristics
GND
=
0
V
Item
Symbol
Condition
Rating
Unit
Frequency precision
∆
f /f
Ta = +25
°
C, V
DD
= 3.0 V
5
±
23.0 (
∗
1)
×
10
-6
Frequency/voltage
characteristics
f /V
Ta = +25
°
C, V
DD
= 2.0 V to 5.0 V
±
2 Max.
×
10
-6
/V
Frequency/temperature
characteristics
Top
Ta =
−
10
°
C to +70
°
C,
V
DD
= 3.0 V ; +25
°
C reference
+10 /
−
120
×
10
−
6
Oscillation start time
t
STA
Ta = +25
°
C, V
DD
= 3.0 V
3 Max.
s
Aging fa
Ta = +25
°
C, V
DD
= 3.0 V, first year
±
5 Max.
×
10
−
6
/year
(
∗
1) Precision gap per month: 1 minutes (excluding offset value)
7. Electrical Characteristics
7.1. DC characteristics
*Unless otherwise specified, GND
=
0
V
,
V
DD
=
1.8
V
to
5.5
V
,
Ta
=
−
40
°
C
to
+85
°
C
Item Symbol
Condition
Min. Typ. Max. Unit
Current
consumption (1)
I
DD1
V
DD
=
5 V
0.65 1.2
Current
consumption (2)
I
DD2
f
SCL
= 0 Hz
/INT = V
DD
, FOE = GND
FOUT; output OFF
(
low level
)
V
DD
=
3 V
0.45 0.8
µ
A
Current
consumption (3)
I
DD3
V
DD
=
5 V
3.0 7.5
Current
consumption (4)
I
DD4
f
SCL
= 0 Hz
/INT, FOE = V
DD
FOUT;
32.768
kHz output ON
,
CL
=
0
pF
V
DD
=
3 V
1.7 4.5
µ
A
Current
consumption (5)
I
DD5
V
DD
=
5 V
8.0 20.0
Current
consumption (6)
I
DD6
f
SCL
= 0 Hz
/INT, FOE = V
DD
FOUT ;
32.768
kHz output ON
,
CL
=
30
pF
V
DD
=
3 V
5.0 12.0
µ
A
V
IH1
FOE
pin
0.7
×
V
DD
V
DD
+ 0.3
V
High-level
input voltage
V
IH2
SCL and SDA pins
0.7
×
V
DD
6.0 V
Low-level
input voltage
V
IL
Input
pin
GND
−
0.3
0.3
×
V
DD
V
V
OH1
V
DD
=5 V, I
OH
=
−
1 mA
4.5 5.0
V
OH2
V
DD
=3 V, I
OH
=
−
1 mA
2.2 3.0
High-level
output voltage
V
OH3
FOUT pin
V
DD
=3 V, I
OH
=
−
100
µ
A
2.9 3.0
V
V
OL1
V
DD
=5 V, I
OL
=1 mA
GND
GND+0.5
V
OL2
V
DD
=3 V, I
OL
=1 mA
GND
GND+0.8
V
OL3
FOUT pin
V
DD
=3 V, I
OL
=100
µ
A
GND
GND+0.1
V
V
OL4
V
DD
=5 V, I
OL
=1 mA
GND
GND+0.25
V
OL5
/INT pin
V
DD
=3 V, I
OL
=1 mA
GND
GND+0.4
V
Low-level
output voltage
V
OL6
SDA
pin
V
DD
≥
2 V, I
OL
=3 mA
GND
GND+0.4
V
Input leakage
current
I
LK
Input pin, V
IN
= V
DD
or GND
−
0.5
0.5
µ
A
Output leakage
current
I
OZ
/INT, SDA, FOUT pins, V
OUT
= V
DD
or GND
−
0.5
0.5
µ
A