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TCA6408 Datasheet(PDF) 3 Page - Texas Instruments

Part No. TCA6408
Description  LOW-VOLTAGE 8-BIT I2C AND SMBus I/O EXPANDER WITH INTERRUPT OUTPUT, RESET, AND CONFIGURATION REGISTERS
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

TCA6408 Datasheet(HTML) 3 Page - Texas Instruments

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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
ZXY Terminal Assignments
1
2
3
4
5
A
P3
P2
P1
RESET
ADDR
B
GND
N.C.(1)
P0
N.C.(1)
VCCI
C
P4
N.C.(1)
INT
N.C.(1)
VCCP
D
P5
P6
P7
SCL
SDA
(1)
N.C. – No internal connection
TERMINAL FUNCTIONS
PIN NUMBER
NAME
DESCRIPTION
TSSOP
QFN
BGA
(PW)
(RGT)
(ZXY)
Supply voltage of I2C bus. Connect directly to the VCC of the external I2C master.
1
15
B5
VCCI
Provides voltage level translation.
2
16
A5
ADDR
Address input. Connect directly to VCCP or ground.
Active-low reset input. Connect to VCCP through a pullup resistor, if no active
3
1
A4
RESET
connection is used.
P port input/output (push-pull design structure). At power on, P0 is configured as
4
2
B3
P0
an input.
P port input/output (push-pull design structure). At power on, P1 is configured as
5
3
A3
P1
an input.
P port input/output (push-pull design structure). At power on, P2 is configured as
6
4
A2
P2
an input.
P port input/output (push-pull design structure). At power on, P3 is configured as
7
5
A1
P3
an input.
8
6
B1
GND
Ground
P port input/output (push-pull design structure). At power on, P4 is configured as
9
7
C1
P4
an input.
P port input/output (push-pull design structure). At power on, P5 is configured as
10
8
D1
P5
an input.
P port input/output (push-pull design structure). At power on, P6 is configured as
11
9
D2
P6
an input.
P port input/output (push-pull design structure). At power on, P7 is configured as
12
10
D3
P7
an input.
13
11
C3
INT
Interrupt output. Connect to VCCI through a pullup resistor.
14
12
D4
SCL
Serial clock bus. Connect to VCCI through a pullup resistor.
15
13
D5
SDA
Serial data bus. Connect to VCCI through a pullup resistor.
16
14
C5
VCCP
Supply voltage of TCA6408 for P port.
3
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