Datasheet
www.ti.com
Electrical Characteristics
(1)
PCA9543A
TWO-CHANNEL I
2
C-BUS SWITCH
WITH INTERRUPT LOGIC AND RESET
SCPS169 – SEPTEMBER 2007
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
POR
Power-on reset voltage No load: V
I
= V
CC
or GND
(2)
V
POR
1.6 2.1 V
5 V 3.6
4.5 V to 5.5 V 2.6 4.5
3.3 V 1.9
V
SWin
= V
CC
,
V
pass
Switch output voltage V
I
SWout
= – 100 μ A
3 V to 3.6 V 1.6 2.8
2.5 V 1.5
2.3 V to 2.7 V 1.1 2
I
OH
INT V
O
= V
CC
2.3 V to 5.5 V 100 μ A
V
OL
= 0.4 V 3 7
SDA
I
OL
V
OL
= 0.6 V 2.3 V to 5.5 V 6 10 mA
INT V
OL
= 0.4 V 3
SCL, SDA V
I
= V
CC
or GND 2.3 V to 5.5 V – 1 1
2.3 V to 3.6 V – 1 1
SC1 – SC0, SD1 – SD0 V
I
= V
CC
or GND
4.5 V to 5.5 V – 1 100
2.3 V to 3.6 V – 1 1
A1, A0 V
I
= V
CC
or GND
I
I
4.5 V to 5.5 V – 1 50 μ A
2.3 V to 3.6 V – 1 1
INT1– INT0 V
I
= V
CC
or GND
4.5 V to 5.5 V – 1 50
2.3 V to 3.6 V – 1 1
RESET V
I
= V
CC
or GND
4.5 V to 5.5 V – 1 50
5.5 V 17 50
Operating f
SCL
= 100
V
I
= V
CC
or GND, I
O
= 0 3.6 V 6 20
mode kHz
2.7 V 3 16
5.5 V 0.3 1
I
CC
Low inputs V
I
= GND, I
O
= 0 3.6 V 0.1 1 μ A
2.7 V 0.1 1
Standby
mode
5.5 V 0.3 1
High inputs V
I
= V
CC
, I
O
= 0 3.6 V 0.1 1
2.7 V 0.1 1
One INT1– INT0 input at 0.6 V,
8 20
Other inputs at V
CC
or GND
INT1– INT0
One INT1– INT0 input at V
CC
– 0.6 V,
8 20
Supply-
Other inputs at V
CC
or GND
Δ I
CC
current 2.3 V to 5.5 V μ A
SCL or SDA input at 0.6 V,
change
8 20
Other inputs at V
CC
or GND
SCL, SDA
SCL or SDA input at V
CC
– 0.6 V,
8 20
Other inputs at V
CC
or GND
2.3 V to 3.6 V 4 5
A1, A0 V
I
= V
CC
or GND
4.5 V to 5.5 V 4 5
2.3 V to 3.6 V 4 6
INT1– INT0 V
I
= V
CC
or GND
C
i
4.5 V to 5.5 V 4 6 pF
2.3 V to 3.6 V 4 5
RESET V
I
= V
CC
or GND
4.5 V to 5.5 V 4 5
SCL V
I
= V
CC
or GND 2.3 V to 5.5 V 9 12
(1) For operation between published voltage ranges, refer to the worst-case parameter in both ranges.
(2) To reset the part, either RESET must be low or V
CC
must be lowered to 0.2 V.
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