TCA6408_09 Datasheet, PDF (13/31 Pages) Texas Instruments – LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

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TCA6408
LOW-VOLTAGE 8-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS151C – FEBRUARY 2007 – REVISED JUNE 2007
Electrical Characteristics
over recommended operating free-air temperature range, V_CCI = 1.65 V to 5.5 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CCP
MIN TYP⁽¹⁾
V_IK
Input diode clamp voltage I_I = –18 mA
1.65 V to 5.5 V
–1.2
V_POR
Power-on reset voltage⁽²⁾ V_I = V_CCP or GND, I_O = 0
1.65 V to 5.5 V
1
1.65 V
1.2
MAX
1.4
UNIT
V
V
I_OH = –8 mA
2.3 V
1.8
3V
2.6
V_OH
P port high-level output
voltage
4.5 V
4.1
V
1.65 V
1.1
I_OH = –10 mA
2.3 V
1.7
3V
2.5
4.5 V
4.0
1.65 V
0.45
I_OL = 8 mA
2.3 V
3V
0.25
0.25
V_OL
P port low-level output
voltage
4.5 V
1.65 V
0.2
V
0.6
I_OL = 10 mA
2.3 V
3V
0.3
0.25
4.5 V
0.2
I_OL
I_I
I_IH
I_IL
I_CC
(I_CCI + I_CCP)
∆I_CCI
∆ I_CCP
SDA
INT
SCL, SDA
ADDR, RESET
P port
P port
Operating
mode
SDA,
P Port,
ADDR,
RESET
Operating
mode
SDA,
P Port,
ADDR,
RESET
Standby
mode
SCL, SDA,
P Port,
ADDR,
RESET
Additional
current in
Standby
mode
SCL, SDA
P Port,
ADDR,
RESET
V_OL = 0.4 V
V_OL = 0.4 V
V_I = V_CCI or GND
V_I = V_CCP or GND
V_I = V_CCP
V_I = GND
V_I on SDA = V_CCI or GND,
V_I on P port, ADDR and
RESET = V_CCP or GND,
I_O = 0, I/O = inputs,
f_SCL = 400 kHz
V_I on SDA = V_CCI or GND,
V_I on P port, ADDR and
RESET = V_CCP or GND,
I_O = 0, I/O = inputs,
f_SCL = 100 kHz
V_I on SCL and SDA = V_CCI or
GND,
V_I on P Port, ADDR and
RESET = V_CCP or GND,
I_O = 0, I/O = inputs,
f_SCL = 0
One input at V_CCI – 0.6 V,
Other inputs at V_CCI or GND
One input at V_CCP – 0.6 V,
Other inputs at V_CCP or GND
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
3.6 V to 5.5 V
2.3 V to 3.6 V
1.65 V to 2.3 V
3.6 V to 5.5 V
2.3 V to 3.6 V
1.65 V to 2.3 V
3.6 V to 5.5 V
2.3 V to 3.6 V
1.65 V to 2.3 V
1.65 V to 5.5 V
1.65 V to 5.5 V
3
3
15
10
6.5
4
2.5
1.6
1
0.2
0.1
0.1
mA
±0.1
µA
±0.1
1 µA
1 µA
20
15
9
5
3.8
µA
2.3
1
0.6
0.4
25 µA
60 µA
C_i
SCL
SDA
C_io
P Port
V_I = V_CCI or GND
V_IO = V_CCI or GND
V_IO = V_CCP or GND
1.65 V to 5.5 V
1.65 V to 5.5 V
6
7 pF
7
8
pF
7.5
8.5
(1) All typical values are at nominal supply voltage (1.8-V, 2.5-V, 3.3-V, or 5-V V_CC) and T_A = 25°C.
(2) When power (from 0 V) is applied to V_CCP, an internal power-on reset holds the TCA6408 in a reset condition until V_CCP has reached
V_POR. At that time, the reset condition is released, and the TCA6408 registers and I²C/SMBus state machine initialize to their default
states. After that, V_CCP must be lowered to below 0.2 V and back up to the operating voltage for a power-reset cycle.
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