lm95221cimm-eng National Semiconductor Corporation, lm95221cimm-eng Datasheet - Page 5

• Manufacturer Part Number: lm95221cimm-eng
• Description: Dual Remote Diode Digital Temperature Sensor With Smbus Interface
• Manufacturer: National Semiconductor Corporation

Symbol
SMBDAT, SMBCLK INPUTS
V
V
V
I
I
C
SMBDAT OUTPUT
I
V
IN(1)
IN(0)
OH
t
Symbol
TIMEOUT
t
t
t
t
t
IN(1)
IN(0)
IN(HYST)
IN
OL
t
t
HD;DAT
SU;STO
SU;DAT
HD;STA
SU;STA
Logic Electrical Characteristics
DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for V
its apply for T
SMBus DIGITAL SWITCHING CHARACTERISTICS Unless otherwise noted, these specifications apply for V
+3.6 Vdc, C
= T
cations of the SMBus version 2.0. The following parameters are the timing relationships between SMBCLK and SMBDAT sig-
nals related to the LM95221. They adhere to but are not necessarily the SMBus bus specifications.
t
R,SMB
F,SMB
f
t
t
HIGH
SMB
LOW
t
BUF
OF
J
= +25˚C, unless otherwise noted. The switching characteristics of the LM95221 fully meet or exceed the published specifi-
SMBus Clock Frequency
SMBus Clock Low Time
SMBus Clock High Time
SMBus Rise Time
SMBus Fall Time
Output Fall Time
SMBDAT and SMBCLK Time Low for Reset of
Serial Interface (Note 14)
Data In Setup Time to SMBCLK High
Data Out Stable after SMBCLK Low
Start Condition SMBDAT Low to SMBCLK
Low (Start condition hold before the first clock
falling edge)
Stop Condition SMBCLK High to SMBDAT
Low (Stop Condition Setup)
SMBus Repeated Start-Condition Setup Time,
SMBCLK High to SMBDAT Low
SMBus Free Time Between Stop and Start
Conditions
L
Logical “1” Input Voltage
Logical “0”Input Voltage
SMBDAT and SMBCLK Digital Input
Hysteresis
Logical “1” Input Current
Logical “0” Input Current
Input Capacitance
High Level Output Current
SMBus Low Level Output Voltage
(load capacitance) on output lines = 80 pF. Boldface limits apply for T
A
= T
J
= T
MIN
Parameter
Parameter
to T
MAX
; all other limits T
V
V
V
I
I
OL
OL
IN
IN
OH
A
= 4mA
= 6mA
= V
= 0 V
Conditions
= T
= V
from V
from V
(Note 12)
(Note 13)
C
I
O
L
DD
J
= 3mA, (Note 13)
DD
= 400pF,
=+25˚C, unless otherwise noted.
5
IN(0)
IN(1)
Conditions
max to V
min to V
IN(1)
IN(0)
(Note 6)
Typical
−0.005
0.005
min
max
400
5
A
= T
(Note 6)
Typical
J
DD
0.3
1
= T
=+3.0 to 3.6 Vdc. Boldface lim-
MIN
(Note 7)
Limits
±
±
2.1
0.8
0.4
0.6
10
to T
10
10
(Note 7)
Limits
MAX
100
250
250
300
900
100
100
4.7
4.0
0.6
1.3
10
25
25
35
; all other limits T
DD
=+3.0 Vdc to
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µA (max)
µA (max)
µA (max)
V (max)
V (max)
V (min)
kHz (max)
(Limit)
kHz (min)
ms (max)
ms (max)
µs (max)
µs (max)
ns (max)
ms (min)
ns (max)
Units
µs (min)
µs (min)
ns (min)
ns (min)
ns (min)
ns (min)
µs (min)
µs (min)
(Limit)
mV
Units
pF
A