PCA9557BS

8-bit I2C-bus and SMBus I/O port with reset, HVQFN-16

Schematic Symbol

Pin Configuration (16 pins)

Pin	Name	Type
1	A0	input
2	A1	input
3	A2	input
4	IO0	bidirectional
5	IO1	bidirectional
6	VSS	power_in
7	IO2	bidirectional
8	IO3	bidirectional
9	IO4	bidirectional
10	IO5	bidirectional
11	IO6	bidirectional
12	IO7	bidirectional
13	~{RESET}	input
14	VDD	power_in
15	SCL	input
16	SDA	bidirectional

Footprint

Confirmed

Package_DFN_QFN/HVQFN-16-1EP_3x3mm_P0.5mm_EP1.5x1.5mm

Pad Layout

—

—

—

—

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Pads (21)

Number	Type
—	smd
—	smd
—	smd
—	smd
1	smd
2	smd
3	smd
4	smd
5	smd
6	smd
7	smd
8	smd
9	smd
10	smd
11	smd
12	smd
13	smd
14	smd
15	smd
16	smd
17	smd

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