TCA7408 Datasheet, PDF (12/25 Pages) Texas Instruments – Low-Voltage 8-Bit I2C and SMBus I/O Expander with Interrupt Output, RESET, I/ODirection Registers, and Programmable Pull-up/Pull-down

TCA7408
SCPS235 – NOVEMBER 2011
www.ti.com
ABSOLUTE MAXIMUM RATINGS^(1)(2)(3)
MIN MAX UNIT
V_CCI
V_CCP
V_I
V_O
I_IK
I_OK
I_IOK
I_OL
I_OH
Supply voltage range
Input voltage range
Output voltage range
Input clamp current
Output clamp current
Input/output clamp current
Continuous output low
current
Continuous output high
current
ADDR, RESET, SCL
INT
GPIO port
SDA
GPIO port
SDA, INT
V_I < 0
V_O < 0
V_O < 0 or V_O > V_CCP
V_O < 0 or V_O > V_CCI
V_O = 0 to V_CCP
V_O = 0 to V_CCI
GPIO port
V_O = 0 to V_CCP
–0.3
6
V
–0.3
4
–0.3
6V
–0.3
6V
±20 mA
±20 mA
±20
mA
±20
10
mA
10
10 mA
Continuous current through GND
200 mA
I_CC
Continuous current through V_CCP
Continuous current through V_CCI
θ_JA
Package thermal impedance ZSZ package
T_stg
Storage temperature range
TBD
–65
160
10
°C/W
150 °C
(1) Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating
conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) The input negative-voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
(3) The package thermal impedance is calculated in accordance with JESD 51-7.
RECOMMENDED OPERATING CONDITIONS
V_CCI
V_CCP
V_IH
V_IL
I_OH
I_OL
T_A
Supply voltage
SCL, SDA
High-level input voltage
RESET, ADDR
GPIO7–GPIO0
SCL, SDA
Low-level input voltage
RESET, ADDR
GPIO7–GPIO0
High-level output current GPIO7–GPIO0
Low-level output current GPIO7–GPIO0
Operating free-air temperature
MIN
1.65
1.65
0.7 × V_CCI
0.65 × V_CCI
0.65 × V_CCP
–0.3
–0.3
–0.3
–40
MAX
5.5
3.6
5.5
5.5
3.6
0.3 × V_CCI
0.35 x V_CCI
0.35 × V_CCP
10
10
85
UNIT
V
V
V
mA
mA
°C
12
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