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9557

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

NXP Semiconductors. 

NXP Semiconductors

5. Pinning information

5.1 Pinning

PCA9557

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

SCL 1

SDA 2

A0 3

A1 4

A2 5

IO0 6

IO1 7

VSS 8

16 VDD

15 RESET

14 IO7

13 IO6

PCA9557D

12 IO5

11 IO4

10 IO3

9 IO2

002aad272

Fig 4. Pin configuration for SO16

SCL 1

SDA 2

A0 3

A1 4

A2 5

IO0 6

IO1 7

VSS 8

PCA9557PW

16 VDD

15 RESET

14 IO7

13 IO6

12 IO5

11 IO4

10 IO3

9 IO2

002aad273

Fig 5. Pin configuration for TSSOP16

terminal 1

index area

A0 1

A1 2

A2 3

IO0 4

PCA9557BS

12 IO7

11 IO6

10 IO5

9 IO4

Transparent top view

Fig 6. Pin configuration for HVQFN16

002aad274

5.2 Pin description

Table 3.

Symbol

SCL

SDA

A0

A1

A2

IO0

IO1

Pin description

Pin

SO16, TSSOP16

1

2

3

4

5

6

7

Description

HVQFN16

15

serial clock line

16

serial data line

1

address input 0

2

address input 1

3

address input 2

4

input/output 0 (open-drain)

5

input/output 1

PCA9557

Product data sheet

Rev. 06 — 11 June 2008

© NXP B.V. 2008. All rights reserved.

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