Datasheet

DS16EV5110A
SNLS301C –JULY 2008–REVISED APRIL 2013 www.ti.com
Electrical Characteristics — System Management Bus Interface
(1) (2)
Over recommended operating supply and temperature ranges unless other specified.
Symbol Parameter Conditions Min Typ Max Units
System Bus Interface — DC Specifications
V
IL
Data, Clock Input Low Voltage 0.8 V
V
IH
Data, Clock Input High Voltage 2.8 V
DD
V
I
PULLUP
Current through pull-up resistor or VOL = 0.4V
10 mA
current source
V
DD
Nominal Bus Voltage 3.0 3.6 V
I
LEAK-Bus
Input Leakage per bus segment
(3)
-200 +200 µA
I
LEAK-Pin
Input Leakage per device pin -15 µA
C
I
Capacitance for SDA and SDC
(3) (4)
10 pF
R
TERM
Termination Resistance V
DD3.3
,
(3) (4) (5)
1000 Ω
System Bus Interface Timing Specification
FSMB Bus Operating Frequency
(6)
10 100 kHz
TBUF Bus Free Time Between Stop and
4.7 µs
Start Condition
TSU:CS Minimum time between SMB_CS
(7)
30 ns
being active and start condition
TH:CS Minimum time between stop
(7)
100 ns
condition and releasing SMB_CS
THD:STA Hold Time After (Repeated) Start At I
PULLUP
, Max
Condition. First CLK generated 4.0 µs
after this period.
TSU:STA Repeated Start Condition Setup
4.7 µs
Time
TSU:STO Stop Condition Setup Time 4.0 µs
THD:DAT Data Hold Time 300 ns
TSU:DAT Data Setup Time 250 ns
T
TIMEOUT
Detect Clock Low Timeout
(6)
25 35 ms
T
LOW
Clock Low Period 4.7 µs
T
HIGH
Clock High Period
(6)
4.0 50 µs
T
LOW
:SEXT Cumulative Clock Low Extend Time
(6)
2 ms
(Slave Device)
t
F
Clock/Data Fall Time
(6)
300 ns
t
R
Clock/Data Rise Time
(6)
1000 ns
t
POR
Time in which a device must be
(6)
500 ms
operational after power-on reset
(1) Typical values represent most likely parametric norms at V
DD
= 3.3V, T
A
= 25°C, and at the Recommended Operation Conditions at the
time of product characterization and are not ensured.
(2) The Electrical Characteristics tables list ensured specifications under the listed Recommended Operating Conditions except as
otherwise modified or specified by the Electrical Characteristics Conditions and/or Notes.
(3) Recommended value. Parameter not tested in production.
(4) Recommended maximum capacitance load per bus segment is 400pF.
(5) Maximum termination voltage should be identical to the device supply voltage.
(6) Compliant to SMBus 2.0 physical layer specification. See System Management Bus (SMBus) Specification Version 2.0, section 3.1.1
SMBus common AC specifications for details.
(7) Specification is ensured by characterization and is not tested in production.
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