6.5 Electrical Characteristics
(1)
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
V
PORR
Power-on reset voltage, V
CC
rising No load, V
I
= V
CC
or GND
(4)
1.2 1.5 V
V
PORF
Power-on reset voltage, V
CC
falling
(2)
No load, V
I
= V
CC
or GND
(4)
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 5.25 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 0.6 1.25
I
OL
SDA
V
OL
= 0.4 V
1.65 V to 5.25 V
3 6
mA
V
OL
= 0.6 V 5 9
I
I
SCL, SDA
V
I
= V
CC
or GND
(4)
1.65 V to 5.25 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
(4)
, I
O
= 0
5.25 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
(4)
, I
O
= 0
5.25 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
(4)
, I
O
= 0
5.25 V 0.2 4
3.6 V 0.1 2
2.7 V 0.1 2
1.65 V 0.1 1
High inputs V
I
= V
CC
, I
O
= 0
5.25 V 0.2 4
3.6 V 0.1 2
2.7 V 0.1 2
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
(4)
1.65 V to 5.25 V
3 20
μA
SCL or SDA input at V
CC
– 0.6 V,
Other inputs at V
CC
or GND
(4)
3 20
C
i
A2–A0
V
I
= V
CC
or GND
(4)
1.65 V to 5.25 V
4 5
pF
RESET 4 5
SCL V
I
= V
CC
or GND
(4)
, Switch OFF 20 28
C
io(off)
(3)
SDA
V
I
= V
CC
or GND
(4)
, Switch OFF 1.65 V to 5.25 V
20 28
pF
SC7–SC0, SD7–SD0
5.5 7.5
R
ON
Switch-on resistance
V
O
= 0.4 V, I
O
= 15 mA
4.5 V to 5.25 V 4 10 25
Ω
3 V to 3.6 V 5 12 35
V
O
= 0.4 V, I
O
= 10 mA
2.3 V to 2.7 V 7 15 45
1.65 V to 1.95 V 10 25 70
(1) For operation between specified voltage ranges, refer to the worst-case parameter in both applicable ranges.
(2) The power-on reset circuit resets the I
2
C bus logic with V
CC
< V
PORF
.
(3) C
io(ON)
depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.
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TCA9548A-Q1
ZHCSJQ8B – MAY 2019 – REVISED OCTOBER 2021
Copyright © 2021 Texas Instruments Incorporated
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