PCA9538 datasheet(2/28 Pages) NXP

Part #	PCA9538

Description	8-bit I2C-bus and SMBus low power I/O port with interrupt and reset

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Manufacturer	NXP [NXP Semiconductors]

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PCA9538_5

Product data sheet

Rev. 05 — 28 May 2009

2 of 28

NXP Semiconductors

PCA9538

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

I 8 I/O pins which default to 8 inputs

I 0 Hz to 400 kHz clock frequency

I ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per

JESD22-A115 and 1000 V CDM per JESD22-C101

I Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA

I Offered in three different packages: SO16, TSSOP16 and HVQFN16

3.

Ordering information

4.

Block diagram

Table 1.

Ordering information

Tamb = −40 °C to +85 °C

Type number

Topside

mark

Package

Name

Description

Version

PCA9538D

SO16

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

SOT162-1

PCA9538PW

PCA9538

TSSOP16

plastic thin shrink small outline package; 16 leads;

body width 4.4 mm

SOT403-1

PCA9538BS

9538

HVQFN16

plastic thermal enhanced very thin quad ﬂat package;

no leads; 16 terminals; body 4

× 4 × 0.85 mm

SOT629-1

Remark: All I/Os are set to inputs at reset.

Fig 1.

Block diagram of PCA9538

PCA9538

POWER-ON

RESET

002aae667

INPUT

FILTER

SCL

SDA

VDD

IO0

VSS

8-bit

write pulse

read pulse

IO2

IO1

IO3

LP

FILTER

VDD

INT

RESET

A0

A1

IO4

IO6

IO5

IO7

I2C-BUS/SMBus

CONTROL

INPUT/

OUTPUT

PORTS

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