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| TCA9548A_15 Datasheet, PDF (8/35 Pages) Texas Instruments – Low-Voltage 8-Channel I2C Switch With Reset | |||
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TCA9548A
SCPS207E â MAY 2012 â REVISED OCTOBER 2015
7 Parameter Measurement Information
VCC
SDA
DUT
RL = 1 kW
CL = 50 pF
(see Note A)
SDA LOAD CONFIGURATION
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Three Bytes for Complete
Device Programming
Stop
Condition
(P)
Start
Condition
(S)
Address
Bit 7
(MSB)
Address
Bit 6
Address
Bit 1
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 7
(MSB)
Data
Stop
Bit 0 Condition
(LSB)
(P)
SCL
SDA
tscl
tsch
ticr
tbuf
ticf
tvd(ack)
tsts
tsp
tvdH(Data)
ticf
tsth
Start or
Repeat Start
Condition
ticr
tsds
tsdh
tvdL(Data)
tsps
Repeat Start
Condition
Stop
Condition
VOLTAGE WAVEFORMS
0.7 ´ VCC
0.3 ´ VCC
0.7 ´ VCC
0.3 ´ VCC
BYTE
1
2, 3
DESCRIPTION
I2C address
P-port data
A. CL includes probe and jig capacitance.
B. All inputs are supplied by generators having the following characteristics: PRR ⤠10 MHz, ZO = 50 â¦, tr/tf ⤠30 ns.
C. Not all parameters and waveforms are applicable to all devices.
Figure 5. I2C Load Circuit and Voltage Waveforms
8
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