Datasheet

P0 A
0.7 ×
V
CC
0.3 × V
CC
SCL
P7
t
p
v
(see Note B)
Slave
ACK
Unstable
Data
Last Stable Bit
SDA
P
n
P
n
WRITE MODE (R/W = 0)
P0 A
0.7 × V
C
C
0.3 × V
CC
SCL
P7
0.7 × V
C
C
0.3 × V
CC
t
p
s
t
p
h
READ MODE (R/W
= 1)
P-PORT LOAD CONFIGURATION
DUT
C
L
= 50 pF
(see Note A)
Pn
2 × V
C
C
500 W
500 W
1.5 V
PCA9554
SCPS128B–JULY2006–REVISEDAUGUST2008........................................................................................................................................................ www.ti.com
PARAMETERMEASUREMENTINFORMATION(continued)
A.C
L
includesprobeandjigcapacitance.
B.t
pv
ismeasuredfrom0.7×V
CC
onSCLto50%I/Opinoutput.
C.Allinputsaresuppliedbygeneratorshavingthefollowingcharacteristics:PRR≤10MHz,Z
O
=50Ω,t
r
/t
f
≤30ns.
D.Theoutputsaremeasuredoneatatime,withonetransitionpermeasurement.
E.Allparametersandwaveformsarenotapplicabletoalldevices.
Figure12.P-PortLoadCircuitandVoltageWaveforms
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