DS2460 Maxim, DS2460 Datasheet - Page 2

• Manufacturer Part Number: DS2460
• Description: The DS2460 SHA-1 Coprocessor with EEPROM is a hardware implementation of the ISO/IEC 10118-3 Secure Hash Algorithm (SHA-1), eliminating the need to develop software to perform the complex SHA computation required for authenticating SHA devices and fo
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
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
Supply Voltage
Standby Current
Operating Current
Programming Current
SHA-1 Computation Current
SHA-1 Engine
SHA-1 Computation Time
EEPROM
Programming Time
Endurance
Data Retention
I²C-Pins (Note 7) See Figure 6
LOW Level Input Voltage
HIGH Level Input Voltage
Hysteresis of Schmitt Trigger
Inputs
LOW Level Output Voltage at
4mA Sink Current
Output Fall Time from V
V
from 10pF to 400pF
Pulse Width of Spikes that are
Suppressed by the Input Filter
Input Current Each I/O Pin with
an Input Voltage Between
0.1V
Input Capacitance
SCL Clock Frequency
Hold Time (Repeated) START
Condition. After this Period, the
First Clock Pulse is Generated.
LOW Period of the SCL Clock
HIGH Period of the SCL Clock
Voltage Range on Any Pin Relative to Ground
Maximum Current Into Any Pin
Operating Temperature Range
Junction Temperature
Storage Temperature Range
Lead Temperature (soldering 10s)
Soldering Temperature (reflow)
ILmax
CCmax
with a Bus Capacitance
PARAMETER
and 0.9V
CCmax
Ihmin
to
SYMBOL
N
t
I
t
HD:STA
t
t
I
I
PROG
PROG
V
V
I
t
t
V
f
CYCLE
V
HIGH
V
LOW
CCS
CCA
SHA
SHA
t
RET
SCL
C
t
SP
I
CC
hys
of
OL
IH
IL
i
i
Bus idle
Bus idle, +25°C
Bus active at 400kHz
(Note 9)
See full version of data sheet
See full version of data sheet
At +25°C (Notes 2, 3)
At +85°C (Notes 4, 5, 6)
(Note 8)
(Notes 8, 9)
(Note 9)
(Note 9)
SDA and SCL pins only
(Note 9)
(Notes 8, 10)
(Notes 8, 9)
CONDITIONS
2 of 9
0.05 ×
0.1Cb
0.7 ×
200k
20 +
MIN
-0.5
V
V
-10
2.7
0.6
1.3
0.6
40
0
CC
CC
(-40°C to +85°C, see Note 1)
TYP
250
500
V
0.3 ×
MAX
1000
0.5V
500
V
250
400
5.5
0.4
-55°C to +125°C
CC
10
10
10
50
3
1
CC
-40°C to +85°C
+
-0.5V, +6V
+150°C
UNITS
±20mA
years
+300°C
+260°C
kHz
mA
ms
ms
µA
µA
µA
µA
pF
ns
ns
µs
µs
µs
V
V
V
V
V