TCA9543A_15 Datasheet, PDF (5/32 Pages) Texas Instruments – TCA9543A Low Voltage 2-Channel I2C Bus Switch With Interrupt Logic And Reset

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TCA9543A
SCPS206A – MARCH 2014 – REVISED FEBRUARY 2015
7.5 Electrical Characteristics⁽¹⁾
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
V_PORR
Power-on reset voltage,
VCC rising
No load: V_I = V_CC or GND⁽³⁾
V_PORF
Power-on reset voltage,
VCC falling⁽⁴⁾
No load: V_I = V_CC or GND⁽³⁾
5V
4.5 V to 5.5 V
3.3 V
V_pass
Switch output voltage
V_SWin = V_CC,
I_SWout = –100 μA
3 V to 3.6 V
2.5 V
2.3 V to 2.7 V
1.8 V
1.65 V to 1.95 V
I_OH
INT
V_O = V_CC
SDA
I_OL
V_OL = 0.4 V
V_OL = 0.6 V
INT
V_OL = 0.4 V
SCL, SDA
V_I = V_CC or GND⁽³⁾
SC1–SC0, SD1–SD0
V_I = V_CC or GND⁽³⁾
I_I
A1, A0
V_I = V_CC or GND⁽³⁾
INT1–INT0
V_I = V_CC or GND⁽³⁾
RESET
V_I = V_CC or GND⁽³⁾
f_SCL = 400
kHz
Operating
mode
f_SCL = 100
kHz
V_I = V_CC or GND⁽³⁾
I_O = 0
t_r,max = 300 ns
V_I = V_CC or GND⁽³⁾
I_O = 0
t_r,max = 1 µs
I_CC
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
1.65 V to 5.5 V
5.5 V
3.6 V
2.7 V
1.65 V
5.5 V
3.6 V
2.7 V
1.65 V
5.5 V
Low inputs
V_I = GND⁽³⁾
I_O = 0
3.6 V
2.7 V
Standby
mode
1.65 V
5.5 V
High inputs
V_I = V_CC
I_O = 0
3.6 V
2.7 V
1.65 V
ΔI_CC
Supply-
current
change
INT1–INT0
SCL, SDA
One INT1–INT0 input at 0.6 V,
Other inputs at V_CC or GND⁽³⁾
One INT1–INT0 input at V_CC – 0.6 V,
Other inputs at V_CC or GND⁽³⁾
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
MIN TYP⁽²⁾
1.2
MAX
1.5
UNIT
V
0.8
1
V
3.6
2.6
4.5
1.9
1.6
2.8
V
1.4
1.0
1.8
0.8
0.5
1.1
10 μA
3
7
6
10
mA
3
–1
1
–1
1
–1
1 μA
–1
1
–1
1
50
20
11
6
35
14
5
2
μA
1.6
2
1.0 1.3
0.7 1.1
0.4 0.55
1.6
2
1.0 1.3
0.7 1.1
0.4 0.55
3
20
3
20
μA
2
15
2
15
(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 when V_CC < V_PORF.
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