Typical operating characteristics, Ac electrical characteristics (continued) – Rainbow Electronics DS1858 User Manual
Page 5
DS1858
Dual Temperature-Controlled Resistors with
Three Monitors
_____________________________________________________________________
5
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 3.0V to 5.5V, T
A
= -40°C to +95°C, unless otherwise noted.)
Note 10: After this period, the first clock pulse is generated.
Note 11: The maximum t
HD:DAT
only has to be met if the device does not stretch the LOW period (t
LOW
) of the SCL signal.
Note 12: A device must internally provide a hold time of at least 300ns for the SDA signal (see the V
IH MIN
of the SCL signal) in order
to bridge the undefined region of the falling edge of SCL.
Note 13: C
B
—total capacitance of one bus line, timing referenced to 0.9 x V
CC
and 0.1 x V
CC
.
Note 14: EEPROM write begins after a STOP condition occurs.
Typical Operating Characteristics
(V
CC
= 5.0V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. TEMPERATURE
DS1858 toc01
TEMPERATURE (
°C)
SUPPLY CURRENT (
µ
A)
80
60
40
20
0
-20
540
580
620
660
700
500
-40
100
SUPPLY CURRENT vs. VOLTAGE
DS1858 toc02
VOLTAGE (V)
SUPPLY CURRENT (
µ
A)
5.0
4.5
4.0
3.5
450
500
550
600
650
700
400
3.0
5.5
RESISTANCE vs. SETTING
DS1858 toc03
SETTING
RESISTANCE (k
Ω
)
250
200
150
100
50
10
20
30
40
50
60
0
0
300
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
DS1858 toc04
SCL FREQUENCY (kHz)
ACTIVE SUPPLY CURRENT (
µ
A)
300
200
100
540
580
620
660
700
SDA = 5V
500
0
400