Datasheet

SDA
SCL
Start
ACK or Read Cycle
t
w
t
R
EC
RESET
t
R
EC
0.3 y V
C
C
V
CC
/2
t
RESET
Pn
R
L
= 1 k
Ω
V
C
C
C
L
= 50 pF
SDA LOAD CONFIGURATION
DUT
SDA
DUT
P-PORT LOAD CONFIGURATION
Pn
C
L
= 100 pF
V
C
C
/2
PCA9555
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PARAMETERMEASUREMENTINFORMATION(continued)
A.C
L
includesprobeandjigcapacitance.
B.Allinputsaresuppliedbygeneratorshavingthefollowingcharacteristics:PRR≤10MHz,Z
O
=50Ω,t
r
/t
f
≤30ns.
C.Theoutputsaremeasuredoneatatime,withonetransitionpermeasurement.
D.I/Osareconfiguredasinputs.
E.Allparametersandwaveformsarenotapplicabletoalldevices.
Figure14.ResetLoadCircuitsandVoltageWaveforms
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Not Recommended for New Designs