PCAL6408APW datasheet(35/48 Pages) NXP

Part #	PCAL6408APW

Description	Low-voltage translating, 8-bit I2C-bus/SMBus I/O expander with interrupt output, reset, and configuration registers

PDF	48 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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35 / 48 page

PCAL6408A

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

Product data sheet

Rev. 2 — 6 December 2012

35 of 48

NXP Semiconductors

PCAL6408A

Low-voltage translating, 8-bit I2C-bus/SMBus I/O expander

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

002aag977

DUT

CL = 50 pF

RL = 1 kΩ

SDA

VDD(I2C-bus)

002aag981

DUT

CL = 50 pF

500 Ω

2 × VDD(P)

500 Ω

SDA

SCL

002aag984

trst

trec(rst)

tw(rst)

RESET

START

trst

ACK or read cycle

0.3 × VDD(I2C-bus)

0.5 × VDD(I2C-bus)

0.5 × VDD(P)

trec(rst)

PCAL6408APW Datasheet(PDF) 35 Page - NXP Semiconductors

PCAL6408APW Datasheet(HTML) 35 Page - NXP Semiconductors

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