DS1342 Maxim, DS1342 Datasheet - Page 5

• Manufacturer Part Number: DS1342
• Description: The DS1341/DS1342 low-current real-time clocks (RTCs) are timekeeping devices that provide an extremely low standby current, which permits longer life from a power supply
• Manufacturer: Maxim

(T
A
= +25°C, unless otherwise noted.)
2.0
1.8
1.6
1.4
1.2
1.0
0.8
-10
V
Low-Current I
CC
SQW/INTB OUTPUT-VOLTAGE HIGH
= +1.8V, T
-8
DS1341 I
DS1342 I
vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
450
400
350
300
250
200
150
100
500
450
400
350
300
250
200
150
100
A
= +25°C
-6
1
1
CLKIN = GND, I
CLKIN = GND, I
CCT
CCT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY CURRENT vs. SUPPLY VOLTAGE
-4
2
2
(EGFIL = 0, DOSF = 1)
(EGFIL = 0, DOSF = 1)
+85°C
SUPPLY VOLTAGE (V)
+25°C
SUPPLY VOLTAGE (V)
OUT
OUT
-2
= 0mA
= 0mA
3
3
-40°C
-40°C
0
4
4
+85°C
+25°C
2
0.5
0.4
0.3
0.2
0.1
5
0
C RTCs for High-ESR Crystals
5
0
V
CC
SQW/INTB OUTPUT-VOLTAGE LOW
= +1.8V, T
2
vs. OUTPUT CURRENT
OUTPUT CURRENT (mA)
A
= +25°C
4
Typical Operating Characteristics
6
DS1341 I
DS1342 I
550
500
450
400
350
300
250
200
550
500
450
400
350
300
250
200
8
1
1
CLKIN = GND, I
CLKIN = GND, I
CCT
CCT
10
SUPPLY CURRENT vs. SUPPLY VOLTAGE
SUPPLY CURRENT vs. SUPPLY VOLTAGE
2
2
(EGFIL = 1, DOSF = 0)
(EGFIL = 1, DOSF = 0)
+85°C
+85°C
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
OUT
OUT
80
70
60
50
40
30
20
10
= 0mA
= 0mA
3
3
0
+25°C
0
T
A
= +25°C, I
4
4
POWER-SUPPLY CURRENT
+25°C
100
-40°C
vs. SCL FREQUENCY
SCL FREQUENCY (kHz)
OUT
6.0V
-40°C
5
5
= 0mA
200
5.0V
300
3.0V
1.8V
400
5