TCA9548A_15 Datasheet, PDF (5/35 Pages) Texas Instruments – Low-Voltage 8-Channel I2C Switch With Reset

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TCA9548A
SCPS207E – MAY 2012 – REVISED OCTOBER 2015
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⁾
V_PORR
Power-on reset voltage, V_CC rising No load, V_I = V_CC or GND⁽³⁾
1.2
V_PORF
Power-on reset voltage, V_CC
falling ⁽⁴⁾
No load, V_I = V_CC or GND⁽³⁾
0.8
1
5V
3.6
4.5 V to 5.5 V
2.6
3.3 V
1.9
V_o(sw)
Switch output voltage
V_i(sw) = V_CC, I_SWout = –100 μA
3 V to 3.6 V
2.5 V
1.6
1.5
2.3 V to 2.7 V
1.1
1.8 V
1.1
1.65 V to 1.95 V
0.9
I_OL
SDA
SCL, SDA
V_OL = 0.4 V
V_OL = 0.6 V
1.65 V to 5.5 V
3
6
6
9
–1
SC7–SC0, SD7–SD0
I_I
A2–A0
V_I = V_CC or GND⁽³⁾
–1
1.65 V to 5.5 V
–1
RESET
–1
5.5 V
50
f_SCL = 400 kHz
V_I = V_CC or GND⁽³⁾, I_O = 0
3.6 V
2.7 V
20
11
Operating mode
1.65 V
6
5.5 V
9
f_SCL = 100 kHz
V_I = V_CC or GND⁽³⁾, I_O = 0
3.6 V
2.7 V
6
4
1.65 V
2
I_CC
5.5 V
0.2
Low inputs
V_I = GND⁽³⁾, I_O = 0
3.6 V
0.1
2.7 V
0.1
Standby mode
1.65 V
0.1
5.5 V
0.2
High inputs
V_I = V_CC, I_O = 0
3.6 V
0.1
2.7 V
0.1
1.65 V
0.1
ΔI_CC
Supply-current
change
SCL, SDA
SCL or SDA input at 0.6 V,
Other inputs at V_CC or GND⁽³⁾
SCL or SDA input at V_CC – 0.6 V,
Other inputs at V_CC or GND⁽³⁾
1.65 V to 5.5 V
3
3
A2–A0
C_i
RESET
SCL
V_I = V_CC or GND⁽³⁾
4
1.65 V to 5.5 V
4
V_I = V_CC or GND⁽³⁾, Switch OFF
20
C_io(off) ⁽⁵⁾
SDA
SC7–SC0, SD7–SD0
V_I = V_CC or GND⁽³⁾, Switch OFF
1.65 V to 5.5 V
20
5.5
MAX UNIT
1.5 V
V
4.5
2.8
V
2
1.25
mA
1
1
μA
1
1
80
35
20
10
30
15
8
4
μA
2
2
1
1
2
2
1
1
20
μA
20
5
5 pF
28
28
pF
7.5
(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-V, 2.5-V, 3.3-V, 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 I²C 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.
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