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TCA9548A Fiches technique(PDF) 5 Page - Texas Instruments

No de pièce TCA9548A
Description  Low-Voltage 8-Channel I2C Switch with Reset
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TCA9548A Fiches technique(HTML) 5 Page - Texas Instruments

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5
TCA9548A
www.ti.com
SCPS207F – MAY 2012 – REVISED NOVEMBER 2016
Product Folder Links: TCA9548A
Submit Documentation Feedback
Copyright © 2012–2016, Texas Instruments Incorporated
(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 VCC), TA = 25°C.
(3)
RESET = VCC (held high) when all other input voltages, VI = GND.
(4)
The power-on reset circuit resets the I2C bus logic with VCC < VPORF.
(5)
Cio(ON) depends on internal capacitance and external capacitance added to the SCn lines when channels(s) are ON.
6.5 Electrical Characteristics
(1)
VCC = 2.3 V to 3.6 V, over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
VCC
MIN TYP(2)
MAX
UNIT
VPORR
Power-on reset voltage, VCC rising
No load, VI = VCC or GND
(3)
1.2
1.5
V
VPORF
Power-on reset voltage, VCC
falling(4)
No load, VI = VCC or GND
(3)
0.8
1
V
Vo(sw)
Switch output voltage
Vi(sw) = VCC, ISWout = –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
IOL
SDA
VOL = 0.4 V
1.65 V to 5.5 V
3
6
mA
VOL = 0.6 V
6
9
II
SCL, SDA
VI = VCC 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
ICC
Operating mode
fSCL = 400 kHz
VI = VCC 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
fSCL = 100 kHz
VI = VCC 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
VI = 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
VI = VCC, IO = 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
ΔICC
Supply-current
change
SCL, SDA
SCL or SDA input at 0.6 V,
Other inputs at VCC or GND
(3)
1.65 V to 5.5 V
3
20
μA
SCL or SDA input at VCC – 0.6 V,
Other inputs at VCC or GND
(3)
3
20
Ci
A2–A0
VI = VCC or GND
(3)
1.65 V to 5.5 V
4
5
pF
RESET
4
5
SCL
VI = VCC or GND
(3), Switch OFF
20
28
Cio(off)
(5)
SDA
VI = VCC or GND
(3), Switch OFF
1.65 V to 5.5 V
20
28
pF
SC7–SC0, SD7–SD0
5.5
7.5


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