Datasheet

ELECTRICALCHARACTERISTICS
PCA9555
SCPS131E–AUGUST2005–REVISEDMAY2008......................................................................................................................................................... www.ti.com
overrecommendedoperatingfree-airtemperaturerange(unlessotherwisenoted)
PARAMETERTESTCONDITIONSV
CC
MINTYP
(1)
MAXUNIT
V
IK
InputdiodeclampvoltageI
I
=–18mA2.3Vto5.5V–1.2V
V
POR
Power-onresetvoltageV
I
=V
CC
orGND,I
O
=0V
POR
1.51.65V
2.3V1.8
I
OH
=–8mA3V2.6
4.75V4.1
V
OH
P-porthigh-leveloutputvoltage
(2)
V
2.3V1.7
I
OH
=–10mA3V2.5
4.75V4
SDAV
OL
=0.4V3
V
OL
=0.5V820
I
OL
Pport
(3)
2.3Vto5.5VmA
V
OL
=0.7V1024
INT V
OL
=0.4V3
SCL,SDA±1
I
I
V
I
=V
CC
orGND2.3Vto5.5VµA
A2–A0±1
I
IH
PportV
I
=V
CC
2.3Vto5.5V1µA
I
IL
PportV
I
=GND2.3Vto5.5V–100µA
5.5V100200
V
I
=V
CC
orGND,I
O
=0,
Operatingmode3.6V3075µA
I/O=inputs,f
SCL
=400kHz,Noload
2.7V2050
5.5V1.11.5
V
I
=GND,I
O
=0,I/O=inputs,
I
CC
Lowinputs3.6V0.71.3mA
f
SCL
=0kHz,Noload
2.7V0.51
Standbymode
5.5V0.51
V
I
=V
CC
,I
O
=0,I/O=inputs,
Highinputs3.6V0.40.9µA
f
SCL
=0kHz,Noload
2.7V0.250.8
AdditionalcurrentinstandbyOneinputatV
CC
–0.6V,
ΔI
CC
2.3Vto5.5V1.5mA
modeOtherinputsatV
CC
orGND
C
I
SCLV
I
=V
CC
orGND2.3Vto5.5V37pF
SDA37
C
io
V
IO
=V
CC
orGND2.3Vto5.5VpF
Pport3.79.5
(1)Alltypicalvaluesareatnominalsupplyvoltage(2.5-V,3.3-V,or5-VV
CC
)andT
A
=25°C.
(2)EachI/Omustbeexternallylimitedtoamaximumof25mA,andeachoctal(P07–P00andP17–P10)mustbelimitedtoamaximum
currentof100mA,foradevicetotalof200mA.
(3)ThetotalcurrentsourcedbyallI/Osmustbelimitedto160mA(80mAforP07–P00and80mAforP17–P10).
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ProductFolderLink(s):PCA9555
Not Recommended for New Designs