PCA9505DGG datasheet(1/31 Pages) NXP

Part #	PCA9505DGG

Description	40-bit I2C-bus I/O port with RESET, OE and INT

PDF	31 Pages

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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1.

General description

The PCA9505/PCA9506 provide 40-bit parallel input/output (I/O) port expansion for

I2C-bus applications organized in 5 banks of 8 I/Os. At 5 V supply voltage, the outputs are

capable of sourcing 10 mA and sinking 15 mA with a total package load of 600 mA to

allow direct driving of 40 LEDs. Any of the 40 I/O ports can be conﬁgured as an input or

output. Output ports are totem-pole and their logic state changes at the Acknowledge

(bank change). The PCA9505 is identical to the PCA9506 except that it includes 100 k

Ω

internal pull-up resistors on all the I/Os. The PCA9506 does not include the internal

pull-ups on the I/Os to reduce power consumption when used as outputs or when the

input is driven by a push-pull driver.

The device can be conﬁgured to have each input port to be masked in order to prevent it

from generating interrupts when its state changes and to have the I/O data logic state to

be inverted when read by the system master.

An open-drain interrupt (INT) output pin allows monitoring of the input pins and is

asserted each time a change occurs in one or several input ports (unless masked).

The Output Enable (OE) pin 3-states any I/O selected as an output and can be used as an

input signal to blink or dim LEDs (PWM with frequency > 80 Hz and change duty cycle).

The internal Power-On Reset (POR) or hardware reset (RESET) pin initializes the 40 I/Os

as inputs. Three address select pins conﬁgure one of 8 slave addresses.

The PCA9506 is available in 56-pin TSSOP and HVQFN packages, while the PCA9505 is

available only in a TSSOP package. They are both speciﬁed over the

−40 °Cto+85 °C

industrial temperature range.

2.

Features

I Standard mode (100 kHz) and Fast mode (400 kHz) compatible I2C-bus serial

interface

I 2.3 V to 5.5 V operation with 5.5 V tolerant I/Os

I 40 conﬁgurable I/O pins that default to inputs at power-up

I PCA9505 includes 100 kΩ internal pull-up resistors on all the I/Os

I Outputs:

N Totem-pole (10 mA source, 15 mA sink) with controlled edge rate output structure

N Active LOW output enable (OE) input pin 3-states all outputs

N Output state change on Acknowledge

N Open-drain active LOW interrupt (INT) output pin allows monitoring of logic level

change of pins programmed as inputs

PCA9505/06

40-bit I2C-bus I/O port with RESET, OE and INT

Rev. 03 — 6 June 2007

Product data sheet

Similar Part No. - PCA9505DGG

Manufacturer	Part #	Datasheet	Description
NXP Semiconductors	PCA9505DGG	276Kb / 34P	40-bit I2C-bus I/O port with RESET, OE and INT Rev. 4-3 August 2010

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