Datasheet

5Maxim Integrated
Low-Current I
2
C RTCs for High-ESR Crystals
DS1341/DS1342
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
POWER-SUPPLY CURRENT
vs. SCL FREQUENCY
DS1341/2 toc07
SCL FREQUENCY (kHz)
SUPPLY CURRENT (µA)
300200100
10
20
30
40
50
60
70
80
0
0 400
T
A
= +25°C, I
OUT
= 0mA
6.0V
5.0V
3.0V
1.8V
DS1341/2 toc06
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
8642
0.1
0.2
0.3
0.4
0.5
0
01
0
SQW/INTB OUTPUT-VOLTAGE LOW
vs. OUTPUT CURRENT
V
CC
= +1.8V, T
A
= +25°C
SQW/INTB OUTPUT-VOLTAGE HIGH
vs. OUTPUT CURRENT
DS1341/2 toc05
OUTPUT CURRENT (mA)
OUTPUT VOLTAGE (V)
-2-4-6-8
1.0
1.2
1.4
1.6
1.8
2.0
0.8
-10 0
V
CC
= +1.8V, T
A
= +25°C
DS1342 I
CCT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(EGFIL = 1, DOSF = 0)
DS1341/2 toc04
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
5432
250
300
350
400
450
500
550
200
1
CLKIN = GND, I
OUT
= 0mA
+85°C
+25°C
-40°C
DS1342 I
CCT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(EGFIL = 0, DOSF = 1)
DS1341/2 toc03
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
542 3
150
200
250
300
400
350
450
500
100
1
CLKIN = GND, I
OUT
= 0mA
+85°C
+25°C
-40°C
DS1341 I
CCT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(EGFIL = 1, DOSF = 0)
DS1341/2 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
5432
250
300
350
400
450
500
550
200
1
CLKIN = GND, I
OUT
= 0mA
+85°C
+25°C
-40°C
DS1341 I
CCT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
(EGFIL = 0, DOSF = 1)
DS1341/2 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
5432
150
200
250
300
350
400
450
100
1
CLKIN = GND, I
OUT
= 0mA
+85°C
+25°C
-40°C