TCA6408A-Q1 Datasheet, PDF (3/40 Pages) Texas Instruments – Low-Voltage 8-Bit I2C and SMBus I/O Expander With Interrupt Output

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5 Pin Configuration and Functions
TCA6408A-Q1
SCPS234 – SEPTEMBER 2016
PIN
NAME
NO.
ADDR
2
GND
8
INT
13
P0
4
P1
5
P2
6
P3
7
P4
9
P5
10
P6
11
P7
12
RESET
3
SCL
14
SDA
15
V_CCI
1
V_CCP
16
PW Package
16-Pin TSSOP
Top View
V_{CCI 1}
ADDR 2
RESET 3
P0 4
P1 5
P2 6
P3 7
GND 8
16 _VCCP
15 _SDA
14 _SCL
13 _INT
12 _P7
11 _P6
10 _P5
9 _P4
Pin Functions
I/O
DESCRIPTION
I
Address input. Connect directly to V_CCP or ground
—
Ground
O
Interrupt output. Connect to V_CCI through a pull-up resistor
I/O
P-port input-output (push-pull design structure).
At power on, P0 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P1 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P2 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P3 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P4 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P5 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P6 is configured as an input
I/O
P-port input-output (push-pull design structure).
At power on, P7 is configured as an input
I
Active-low reset input. Connect to V_CCI through a pull-up resistor, if no active
connection is used
I
Serial clock bus. Connect to V_CCI through a pull-up resistor
I/O
Serial data bus. Connect to V_CCI through a pull-up resistor
—
Supply voltage of I²C bus. Connect directly to the V_CC of the external I²C
master. Provides voltage level translation
—
Supply voltage of TCA6408A-Q1 for P-ports
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