AAT4291IJS-1-T1 AAT [Advanced Analog Technology, Inc.], AAT4291IJS-1-T1 Datasheet - Page 2

• Manufacturer Part Number: AAT4291IJS-1-T1
• Description: I/O Expander Load Switches with Serial Control
• Manufacturer: AAT [Advanced Analog Technology, Inc.]

Pin Descriptions
Pin Configuration
2
AAT4290
N/A
1
2
3
4
5
6
7
8
Pin #
EN/SET
OUT2
OUT1
AAT4291
IN
N/A
N/A
2, 3
1
7
6
4
5
8
(Top View)
1
2
3
4
SC70JW-8
AAT4290
Symbol
8
7
6
5
EN/SET
OUT2
OUT1
OUT5
OUT4
OUT3
GND
OUT3
OUT4
OUT5
GND
N/C
IN
I/O Expander Load Switches with Serial Control
Function
Input power supply is connected to the P-channel MOSFET
sources. Connect a 1µF capacitor from IN to GND.
P-channel MOSFET drain.
P-channel MOSFET drain.
Input control pin using S
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.
Not connected.
EN/SET
2
Cwire serial interface. The device
N/C
N/C
IN
(Top View)
SC70JW-8
1
2
3
4
AAT4291
AAT4290/91
8
7
6
5
OUT3
OUT2
OUT1
GND
4290.2006.03.1.2