TCA6408A Datasheet, PDF (13/35 Pages) Texas Instruments – LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

TCA6408A
www.ti.com............................................................................................................................................................. SCPS192C – APRIL 2009– REVISED JULY 2009
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
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
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
I_OL = 8 mA
2.3 V
3V
V_OL
P-port low-level output
voltage
4.5 V
1.65 V
I_OL = 10 mA
2.3 V
3V
4.5 V
SDA
I_OL
INT
V_OL = 0.4 V
1.65 V to 5.5 V
3
3
15
I_I
SCL, SDA, RESET
ADDR
V_I = V_CCI or GND
V_I = V_CCP or GND
1.65 V to 5.5 V
I_IH
P port
I_IL
P port
V_I = V_CCP
V_I = GND
1.65 V to 5.5 V
V_I on SDA and RESET= V_CCI 3.6 V to 5.5 V
10
SDA,
Operating P port,
or GND,
V_I on P port and ADDR =
2.3 V to 3.6 V
6.5
mode
ADDR,
V_CCP or GND,
RESET
I_O = 0, I/O = inputs,
1.65 V to 2.3 V
4
I_CC
f_SCL = 400 kHz
(I_CCI + I_CCP)
V_I on SCL, SDA and RESET 3.6 V to 5.5 V
1.5
Standby
SCL, SDA, = V_CCI or GND,
P port,
V_I on P Port and ADDR =
2.3 V to 3.6 V
1
mode
ADDR,
V_CCP or GND,
RESET
I_O = 0, I/O = inputs,
1.65 V to 2.3 V
0.5
f_SCL = 0
MAX
1.4
UNIT
V
V
V
0.45
0.25
0.25
0.2
V
0.6
0.3
0.25
0.2
mA
±0.1
µA
±0.1
1 µA
1 µA
20
15
9
µA
7
3.2
1.7
(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
V_POR.
power
At that
(from
time,
0 V) is applied to V_CCP, an internal power-on reset
the reset condition is released, and the TCA6408A
holds the
registers
TCA6408A in a
and I²C/SMBus
reset
state
condition until V_CCP
machine initialize to
has reached
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.
Copyright © 2009, Texas Instruments Incorporated
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