Datasheet

PARAMETERMEASUREMENTINFORMATION
R
L
= 1 kΩ
V
CC
C
L
= 50 pF
(see Note A)
t
bu
f
t
icr
t
sth
t
sds
t
sdh
t
icf
t
icr
t
scl
t
sch
t
sts
t
PHL
t
PLH
0.3 × V
CC
Stop
Condition
t
sp
s
Repeat
Start
Condition
Start or
Repeat
Start
Condition
SCL
SDA
Start
Condition
(S)
Address
Bit 7
(MSB)
Data
Bit 10
(LSB)
Stop
Condition
(P)
Three Bytes for Complete
Device Programming
SDA LOAD CONFIGURATION
VOLTAGE WA
VEFORMS
t
ic
f
Stop
Condition
(P)
t
sp
DUT
SDA
0.7 × V
CC
0.3
× V
CC
0.7 × V
CC
R/W
Bit 0
(LSB)
ACK
(A)
Data
Bit 07
(MSB)
Address
Bit 1
Address
Bit 6
BYTE DESCRIPTION
1 I
2
C address
2, 3 P-port data
PCA9554A
SCPS127D–SEPTEMBER2006–REVISEDAUGUST2008........................................................................................................................................... www.ti.com
A.C
L
includesprobeandjigcapacitance.
B.Allinputsaresuppliedbygeneratorshavingthefollowingcharacteristics:PRR≤10MHz,Z
O
=50Ω,t
r
/t
f
≤30ns.
C.Allparametersandwaveformsarenotapplicabletoalldevices.
Figure10.I
2
CInterfaceLoadCircuitandVoltageWaveforms
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