AAT4290 Datasheet, PDF (2/12 Pages) Advanced Analogic Technologies – I/O Expander Load Switches with Serial Control

AAT4290/4291
I/O Expander Load Switches with Serial Control
Pin Descriptions
Pin #
AAT4290
AAT4291
1
1
2
7
3
6
4
4
5
5
6
N/A
7
N/A
8
8
Symbol
IN
OUT2
OUT1
EN/SET
GND
OUT5
OUT4
OUT3
Function
Input power supply is connected to the P-channel MOSFETs
sources. Connect a 1µF capacitor from IN to GND.
P-channel MOSFET drain.
P-channel MOSFET drain.
Input control pin using S²Cwire serial interface. The device
records rising edges of the clock and decodes them into 32
states (8 states for AAT4291) which controls the ON/OFF
states of the MOSFETs. See Table 1 and Table 2 for out-
put settings.
Ground connection.
P-channel MOSFET drain.
P-channel MOSFET drain.
P-channel MOSFET drain.
Pin Configuration
AAT4290
(SC70JW-8)
IN ¹
OUT2 ²
OUT1 ³
EN/SET ⁴
8 _OUT3
7 _OUT4
6 _OUT5
5 _GND
AAT4291
(SC70JW-8)
IN ¹
N/C ²
N/C ³
EN/SET ⁴
8 _OUT3
7 _OUT2
6 _OUT1
5 _GND
2
4290.2005.01.1.0