TCA6424 Datasheet, PDF (14/29 Pages) Texas Instruments – LOW-VOLTAGE 24-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS

TCA6424
LOW-VOLTAGE 24-BIT I²C AND SMBus I/O EXPANDER
WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
SCPS175 – NOVEMBER 2007
www.ti.com
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
MAX
UNIT
V
V_POR
Power-on reset voltage V_I = V_CCP or GND, I_O = 0
1.65 V to 5.5 V
1.65 V
1.2
1
1.4 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
I_OH = –10 mA
2.3 V
1.7
3V
2.5
4.5 V
4.0
1.65 V
0.45
I_OL = 8mA
2.3 V
3V
0.25
0.25
V_OL
P-port low-level output
voltage
4.5 V
1.65 V
0.23
V
0.6
I_OL = 10 mA
2.3 V
3V
0.3
0.25
4.5 V
0.24
SDA
I_OL
INT
V_OL = 0.4 V
V_OL = 0.4 V
1.65 V to 5.5 V
3
mA
1.65 V to 5.5 V
3
15
I_I
SCL, SDA
ADDR, RESET
V_I = V_CCI or GND
V_I = V_CCP or GND
1.65 V to 5.5 V
±0.1
µA
±0.1
I_IH
P port
I_IL
P port
V_I = V_CCP
V_I = GND
1.65 V to 5.5 V
1 µA
1 µA
I_CC
(I_{CCP +} I_CCI)
Operating
mode
SDA,
P port,
ADDR,
RESET
SDA,
P port,
ADDR,
RESET
V_I on SDA = V_CCI or GND,
V_I on P port, ADDR and
RESET = V_CCP,
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,
I_O = 0, I/O = inputs,
f_SCL = 100 kHz
1.65 V to 5.5 V
1.65 V to 5.5 V
8
30
1.7
10
µA
Standby
mode
SCL,
SDA,
P port,
ADDR,
RESET
V_I on SCL and SDA = V_CCI or
GND,
V_I on P port, ADDR and
RESET = V_CCP,
I_O = 0, I/O = inputs,
f_SCL = 0
1.65 V to 5.5 V
0.1
2
ΔI_CCI
ΔI_CCP
Additional
current in
Standby
mode
SCL,
SDA
P port,
ADDR,
RESET
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
25
µA
60
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) Except for I_CC, all typical values are at nominal supply voltage (V_CCP = V_CCI =1.8-V, 2.5-V, 3.3-V, or 5-V V_CC) and T_A = 25°C. For I_CC, all
typical values are at V_CCP = V_CCI = 3.3 V and T_A = 25°C.
14
Submit Documentation Feedback
Product Folder Link(s): TCA6424
Copyright © 2007, Texas Instruments Incorporated