Rainbow Electronics LM86 - Manual (Page 5)

Temperature-to-Digital Converter Characteristics
(Continued)
Unless otherwise noted, these specifications apply for V
DD
=+3.0Vdc to 3.6Vdc. Boldface limits apply for T
A
= T
J
=
T
MIN
≤T
A
≤T
MAX
; all other limits T
A
= T
J
=+25˚C, unless otherwise noted.
Parameter Conditions Typical Limits Units
(Note 6) (Note 7) (Limit)
Local and Remote T_CRIT Default
Temperature Setting
(Note 11) +85 ˚C
Logic Electrical Characteristics
DIGITAL DC CHARACTERISTICS Unless otherwise noted, these specifications apply for V
DD
=+3.0 to 3.6 Vdc. Boldface lim-
its apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits T
A
= T
J
=+25˚C, unless otherwise noted.
Symbol Parameter Conditions Typical Limits Units
(Note 6) (Note 7) (Limit)
SMBData, SMBCLK INPUTS
V
IN(1)
Logical “1” Input Voltage 2.1 V (min)
V
IN(0)
Logical “0”Input Voltage 0.8 V (max)
V
IN(HYST)
SMBData and SMBCLK Digital
Input Hysteresis
400 mV
I
IN(1)
Logical “1” Input Current V
IN
= V
DD
0.005 ± 10 µA (max)
I
IN(0)
Logical “0” Input Current V
IN
= 0 V −0.005 ± 10 µA (max)
C
IN
Input Capacitance 5 pF
ALL DIGITAL OUTPUTS
I
OH
High Level Output Current V
OH
= V
DD
10 µA (max)
V
OL
SMBus Low Level Output Voltage I
OL
= 4mA
I
OL
= 6mA
0.4
0.6
V (max)
SMBus DIGITAL SWITCHING CHARACTERISTICS Unless otherwise noted, these specifications apply for V
DD
=+3.0 Vdc to
+3.6 Vdc, C
L
(load capacitance) on output lines = 80 pF. Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
; all other limits
T
A
= T
J
= +25˚C, unless otherwise noted. The switching characteristics of the LM86 fully meet or exceed the published specifi-
cations of the SMBus version 2.0. The following parameters are the timing relationships between SMBCLK and SMBData sig-
nals related to the LM86. They adhere to but are not necessarily the SMBus bus specifications.
Symbol Parameter Conditions Typical Limits Units
(Note 6) (Note 7) (Limit)
f
SMB
SMBus Clock Frequency 100
10
kHz (max)
kHz (min)
t
LOW
SMBus Clock Low Time from V
IN(0)
max to
V
IN(0)
max
4.7
25
µs (min)
ms (max)
t
HIGH
SMBus Clock High Time from V
IN(1)
min to V
IN(1)
min 4.0 µs (min)
t
R,SMB
SMBus Rise Time (Note 12) 1 µs (max)
t
F,SMB
SMBus Fall Time (Note 13) 0.3 µs (max)
t
OF
Output Fall Time C
L
= 400pF,
I
O
= 3mA, (Note 13)
250 ns (max)
t
TIMEOUT
SMBData and SMBCLK Time Low for
Reset of Serial Interface (Note 14)
25
35
ms (min)
ms (max)
t
SU;DAT
Data In Setup Time to SMBCLK High 250 ns (min)
t
HD;DAT
Data Out Stable after SMBCLK Low 300
900
ns (min)
ns (max)
t
HD;STA
Start Condition SMBData Low to SMBCLK
Low (Start condition hold before the first
clock falling edge)
100 ns (min)
t
SU;STO
Stop Condition SMBCLK High to SMBData
Low (Stop Condition Setup)
100 ns (min)
t
SU;STA
SMBus Repeated Start-Condition Setup
Time, SMBCLK High to SMBData Low
0.6 µs (min)
LM86
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