PCAL6408APW datasheet(39/59 Pages) NXP

Part #	PCAL6408APW

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

PDF	59 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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39 / 59 page

NXP Semiconductors

PCAL6408A

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

configuration registers

002aag981

DUT

CL = 50 pF

500

2 × VDD(P)

500

a. P port load configuration

002aag982

SCL

SDA

tv(Q)

0.3 × VDD(I2C-bus)

0.7 × VDD(I2C-bus)

last stable bit

unstable

data

b. Write mode (R/W = 0)

002aag983

SCL

th(D)

0.3 × VDD(I2C-bus)

0.7 × VDD(I2C-bus)

0.5 × VDD(P)

tsu(D)

CL includes probe and jig capacitance.

tv(Q) is measured from 0.7 × VDD(I2C-bus) on SCL to 50 % I/O (Pn) output.

All inputs are supplied by generators having the following characteristics: PRR ≤ 10 MHz; Zo = 50 Ω; tr/tf ≤ 30 ns.

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

All parameters and waveforms are not applicable to all devices.

c. Read mode (R/W = 1)

Figure 34. P port load circuit and voltage waveforms

PCAL6408A

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

Product data sheet

Rev. 3.3 — 14 October 2024

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