PCAL9538A datasheet(32/43 Pages) NXP

Part #	PCAL9538A

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

PDF	43 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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32 / 43 page

PCAL9538A

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 2 — 10 December 2012

32 of 43

NXP Semiconductors

PCAL9538A

Low-voltage 8-bit I2C-bus/SMBus low power I/O port

a. SDA load configuration

b. P port load configuration

c. RESET timing

CL includes probe and jig capacitance.

All inputs are supplied by generators having the following characteristics: PRR

 10 MHz; Z

o =50 ; tr/tf  30 ns.

The outputs are measured one at a time, with one transition per measurement.

I/Os are configured as inputs.

All parameters and waveforms are not applicable to all devices.

Fig 32. Reset load circuits and voltage waveforms

002aag803

DUT

CL = 50 pF

RL = 1 kΩ

SDA

VDD

002aag805

DUT

CL = 50 pF

500 Ω

2 × VDD

500 Ω

SDA

SCL

002aah073

trst

trec(rst)

tw(rst)

RESET

START

trst

ACK or read cycle

0.3 × VDD

0.5 × VDD

trec(rst)

PCAL9538A Datasheet(PDF) 32 Page - NXP Semiconductors

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