LMH0340_09 Datasheet, PDF (5/26 Pages) National Semiconductor (TI) – 3 Gbps, HD, SD, DVB-ASI SDI Serializer and Cable Driver with LVDS Interface

SMBus Input Electrical Characteristics
Over supply and Operating Temperature ranges unless otherwise specified. (Note 2)
Symbol
V_SIL
V_SIH
I_SPULLUP
V_SDD
I_SLEAKB
I_SLEAKP
C_SI
R_STERM
Parameter
Data, Clock Input Low Voltage
Data, Clock Input High Voltage
Current through pull-up resistor or
current source
Nominal Bus Voltage
Input Leakage per bus segment
Input Leakage per pin
Capacitance for SMBdata and
SMBclk
Termination Resistance
Condition
Min
2
(Note 3)
4
(Note 3)
(Note 3, Note 4)
2.375
−200
−10
V_SDD3V3(Note 5, Note 4, Note 3)
SMBus Switching Characteristics
Over supply and Operating Temperature ranges unless otherwise specified. (Note 2)
Symbol
Parameter
Condition
Min
f_SMB
Bus Operating Frequency
10
t_BUF
Bus free time between stop and start
4.7
condition
t_HD:STA
Hold time after (repeated) start
At I_SPULLUP = MAX
4.0
condition. After this period, the first
clock is generated
t_SU:STA
Repeated Start condition setup time
4.7
t_SU:STO
Stop Condition setup time
4.0
t_HD:DAT
Data hold time
300
t_SU:DAT
Data setup time
250
t_LOW
Clock Low Time
4.7
t_HIGH
Clock High Time
4.0
t_F
Clock/data fall time
20% to 80%
t_R
Clock/data rise time
t_SU:CS
SMB_CS setup time
t_POR
Time in which a device must be
operational after power on
Typ
1000
Typ
30
Max
0.8
V_SDD
3.6
200
10
10
Max
100
50
300
1000
500
Units
V
V
mA
V
μA
μA
pF
Ω
Units
kHz
μs
μs
μs
μs
ns
ns
μs
μs
ns
ns
ns
ms
(levels are V_SIL and V_SIH)
FIGURE 3. SMBus Timing Parameters
5
30017004
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