Data Sheet
5
TCA9548A
www.ti.com
SCPS207F –MAY 2012–REVISED NOVEMBER 2016
Product Folder Links: TCA9548A
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(1) For operation between specified voltage ranges, refer to the worst-case parameter in both applicable ranges.
(2) All typical values are at nominal supply voltage (1.8-, 2.5-, 3.3-, or 5-V V
CC
), T
A
= 25°C.
(3) RESET = V
CC
(held high) when all other input voltages, V
I
= GND.
(4) The power-on reset circuit resets the I
2
C bus logic with V
CC
< V
PORF
.
(5) C
io(ON)
depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.
6.5 Electrical Characteristics
(1)
V
CC
= 2.3 V to 3.6 V, over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP
(2)
MAX UNIT
V
PORR
Power-on reset voltage, V
CC
rising No load, V
I
= V
CC
or GND
(3)
1.2 1.5 V
V
PORF
Power-on reset voltage, V
CC
falling
(4)
No load, V
I
= V
CC
or GND
(3)
0.8 1 V
V
o(sw)
Switch output voltage V
i(sw)
= V
CC
, I
SWout
= –100 μA
5 V 3.6
V
4.5 V to 5.5 V 2.6 4.5
3.3 V 1.9
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
1.8 V 1.1
1.65 V to 1.95 V 0.9 1.25
I
OL
SDA
V
OL
= 0.4 V
1.65 V to 5.5 V
3 6
mA
V
OL
= 0.6 V 6 9
I
I
SCL, SDA
V
I
= V
CC
or GND
(3)
1.65 V to 5.5 V
–1 1
μA
SC7–SC0, SD7–SD0 –1 1
A2–A0 –1 1
RESET –1 1
I
CC
Operating mode
f
SCL
= 400 kHz V
I
= V
CC
or GND
(3)
, I
O
= 0
5.5 V 50 80
μA
3.6 V 20 35
2.7 V 11 20
1.65 V 6 10
f
SCL
= 100 kHz V
I
= V
CC
or GND
(3)
, I
O
= 0
5.5 V 9 30
3.6 V 6 15
2.7 V 4 8
1.65 V 2 4
Standby mode
Low inputs V
I
= GND
(3)
, I
O
= 0
5.5 V 0.2 2
3.6 V 0.1 2
2.7 V 0.1 1
1.65 V 0.1 1
High inputs V
I
= V
CC
, I
O
= 0
5.5 V 0.2 2
3.6 V 0.1 2
2.7 V 0.1 1
1.65 V 0.1 1
ΔI
CC
Supply-current
change
SCL, SDA
SCL or SDA input at 0.6 V,
Other inputs at V
CC
or GND
(3)
1.65 V to 5.5 V
3 20
μA
SCL or SDA input at V
CC
– 0.6 V,
Other inputs at V
CC
or GND
(3)
3 20
C
i
A2–A0
V
I
= V
CC
or GND
(3)
1.65 V to 5.5 V
4 5
pFRESET 4 5
SCL V
I
= V
CC
or GND
(3)
, Switch OFF 20 28
C
io(off)
(5)
SDA
V
I
= V
CC
or GND
(3)
, Switch OFF 1.65 V to 5.5 V
20 28
pF
SC7–SC0, SD7–SD0 5.5 7.5