LTC4308C Просмотр технического описания (PDF) - Linear Technology
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LTC4308C
Linear Technology
LTC4308C Datasheet PDF : 16 Pages
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LTC4308
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VCC = 3.3V, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Bus Stuck Low Timeout
tTIMEOUT
Bus Stuck Low Timer
SDAOUT = SCLOUT = 0V
Timing Characteristics
fI2C,MAX
I2C Maximum Operating Frequency
(Note 3)
tBUF
Bus Free Time Between Stop and Start Condition (Note 3)
tHD,STA
Hold Time After (Repeated) Start Condition
(Note 3)
tSU,STA
Repeated Start Condition Set-Up Time
(Note 3)
tSU,STO
Stop Condition Set-Up Time
(Note 3)
tHD,DATI
Data Hold Time Input
(Note 3)
tSU,DAT
Data Set-Up Time
(Note 3)
l 25 30 35
ms
400 600
kHz
1.3
μs
100
ns
0
ns
0
ns
0
ns
100
ns
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: See “Propagation Delays” in the Operations section for a
discussion of tPHL and tPLH as a function of pull-up resistance and bus
capacitance.
Note 3: Determined by design, not tested in production.
Note 4: Measure points are 0.3 • VCC and 0.7 • VCC.
Note 5: IPULLUPAC varies with temperature and VCC voltage as shown in the
Typical Performance Characteristics section.
Note 6: ICC test performed with connection circuitry active.
Note 7: All currents into pins are positive; all voltages are referenced to
GND unless otherwise specified.
TIMING DIAGRAMS
ENABLE, CONNECT, READY Timing
tPLH_READY
tPLH_EN
ENABLE
tPHL_READY
tPHL_EN
CONNECT
READY
4308 TD01
Rising and Falling Propagation Delays and Rise and Fall Times for SDAIN, SDAOUT and SCLIN, SCLOUT
SDAIN/SCLIN
tRISE
tFALL
tPLH
tPHL tRISE
tFALL
SDAOUT/SCLOUT
4
Figure 1. Timing Diagrams
4308 TD02
4308f
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