Datasheet
DS28CM00: I²C/SMBus Silicon Serial Number
2 of 9
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground -0.5V, +6V
Maximum Current Into Any Pin
±20mA
Operating Temperature Range
-40°C to +85°C
Junction Temperature
+150°C
Storage Temperature Range
-55°C to +125°C
Soldering Temperature
See IPC/JEDEC J-STD-020
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is
not implied. Exposure to the absolute maximum rating conditions for extended periods may affect device.
ELECTRICAL CHARACTERISTICS
(-40°C to +85°C, see Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Supply Voltage V
CC
1.62 5.25 V
Standby Current I
CCS
Bus idle, V
CC
= 5.25V 3 µA
Operating Current I
CCA
Bus active at 400kHz, V
CC
= 5.25V
200 µA
SCL, SDA Pins (Note 2) See Figure 5
V
CC
≥ 2.0V
-0.3
0.3 ×
V
CC
LOW Level Input Voltage V
IL
V
CC
< 2.0V -0.3
0.25 ×
V
CC
V
V
CC
≥ 2.0V
0.7 ×
V
CC
V
CCmax
+
0.3V HIGH Level Input Voltage
(Note 3)
V
IH
V
CC
< 2.0V
0.8 ×
V
CC
V
CCmax
+
0.3V
V
V
CC
≥ 2.0V
0.05 ×
V
CC
Hysteresis of Schmitt Trigger
Inputs (Note 4)
V
hys
V
CC
< 2.0V
0.1 ×
V
CC
V
LOW Level Output Voltage at
4mA Sink Current
V
OL
0.4 V
V
CC
≥ 2.0V
20 +
0.1Cb
250
Output Fall Time from V
Ihmin
to
V
ILmax
with a Bus Capacitance
from 10pF to 400pF (Notes 4,
5)
t
of
V
CC
< 2.0V
20 +
0.1Cb
450
ns
Pulse Width of Spikes that are
Suppressed by the Input Filter
t
SP
SDA and SCL pins only
(Note 4)
50 ns
Input Current with an Input
Voltage Between 0.1V
CC
and
0.9V
CCmax
I
i
(Note 6) -10 10 µA
Input Capacitance C
i
(Note 4) 10 pF
V
CC
≥ 2.0V
400
SCL Clock Frequency (Note 7) f
SCL
V
CC
< 2.0V 344
kHz
Bus Time-out t
TIMEOUT
(Note 7) 25 75 ms
Hold Time (Repeated) START
Condition. After this Period, the
First Clock Pulse is Generated.
t
HD:STA
(Note 8) 0.6 µs
V
CC
≥ 2.7V
1.3
V
CC
≥ 2.0V
1.5
LOW Period of the SCL Clock
(Note 8)
t
LOW
V
CC
< 2.0V 2.3
µs
HIGH Period of the SCL Clock t
HIGH
(Note 8) 0.6 µs
Setup Time for a Repeated
START Condition
t
SU:STA
(Note 8) 0.6 µs