PCA8574ATS datasheet(2/27 Pages) NXP

2 / 27 page

PCA8574_PCA8574A_2

Product data sheet

Rev. 02 — 14 May 2007

2 of 27

NXP Semiconductors

PCA8574/74A

Remote 8-bit I/O expander for I2C-bus with interrupt

I Cellular telephones

I Gaming machines

I Instrumentation and test measurement

Ordering information

Block diagram

Table 1.

Ordering information

Type number

Topside

mark

Package

Name

Description

Version

PCA8574D

SO16

plastic small outline package; 16 leads; body width 7.5 mm

SOT162-1

PCA8574AD

PCA8574N

DIP16

plastic dual in-line package; 16 leads (300 mil); long body

SOT38-1

PCA8574AN

PCA8574PW

PCA8574

TSSOP16

plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

PCA8574APW

PA8574A

PCA8574TS

PCA8574

SSOP20

plastic shrink small outline package; 20 leads;

body width 4.4 mm

SOT266-1

PCA8574ATS

PCA8574A

Fig 1.

Block diagram of PCA8574/74A

002aac677

INT

I2C-BUS

CONTROL

INTERRUPT

LOGIC

PCA8574

PCA8574A

LP FILTER

AD0

AD1

AD2

INPUT

FILTER

SHIFT

SDA

SCL

8 BITS

write pulse

read pulse

POWER-ON

RESET

VDD

VSS

I/O

PORT

P0 to P7

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