PCA9554BS,118 datasheet, PDF - EEWORLD Datasheet

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PCA9554BS,118: DescriptionIC I/O EXPANDER I2C 8B 16HVQFN; CategoryThe embedded processor and controller Microcontrollers and processors; File Size602KB，35 Pages; ManufacturerNXP; Websitehttps://www.nxp.com; Environmental Compliance

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PCA9554BS,118 Overview

IC I/O EXPANDER I2C 8B 16HVQFN

PCA9554BS,118 Parametric

Parameter Name	Attribute value
Brand Name	NXP Semiconductor
Is it Rohs certified?	conform to
Parts packaging code	QFN
package instruction	HVQCCN, LCC16,.16SQ,25
Contacts	16
Manufacturer packaging code	SOT629-1
Reach Compliance Code	compliant
ECCN code	EAR99
JESD-30 code	S-PQCC-N16
JESD-609 code	e4
length	4 mm
Humidity sensitivity level	1
Number of digits	8
Number of I/O lines	8
Number of ports	1
Number of terminals	16
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	HVQCCN
Encapsulate equivalent code	LCC16,.16SQ,25
Package shape	SQUARE
Package form	CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Peak Reflow Temperature (Celsius)	260
power supply	2.5/5 V
Certification status	Not Qualified
Maximum seat height	1 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	2.3 V
Nominal supply voltage	3 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	NICKEL PALLADIUM GOLD
Terminal form	NO LEAD
Terminal pitch	0.65 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	30
width	4 mm
uPs/uCs/peripheral integrated circuit type	PARALLEL IO PORT, GENERAL PURPOSE
Base Number Matches	1

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PCA9554; PCA9554A

8-bit I

C-bus and SMBus I/O port with interrupt

Rev. 10 — 8 November 2017

Product data sheet

1. General description

The PCA9554 and PCA9554A are 16-pin CMOS devices that provide 8 bits of General

Purpose parallel Input/Output (GPIO) expansion for I

C-bus/SMBus applications and

were developed to enhance the NXP Semiconductors family of I

C-bus I/O expanders.

The improvements include higher drive capability, 5 V I/O tolerance, lower supply current,

individual I/O configuration, 400 kHz clock frequency, and smaller packaging. I/O

expanders provide a simple solution when additional I/O is needed for ACPI power

switches, sensors, push buttons, LEDs, fans, and so on.

The PCA9554/PCA9554A consist of an 8-bit Configuration register (Input or Output

selection); 8-bit Input Port register, 8-bit Output Port register and an 8-bit Polarity

Inversion register (active HIGH or active LOW operation). The system master can enable

the I/Os as either inputs or outputs by writing to the I/O configuration bits. The data for

each input or output is kept in the corresponding Input Port or Output Port register. The

polarity of the read register can be inverted with the Polarity Inversion register. All

registers can be read by the system master. Although pin-to-pin and I

C-bus address

compatible with the PCF8574 series, software changes are required due to the

enhancements and are discussed in

Application Note AN469.

The PCA9554/PCA9554A open-drain interrupt output is activated when any input state

differs from its corresponding Input Port register state and is used to indicate to the

system master that an input state has changed. The power-on reset sets the registers to

their default values and initializes the device state machine.

Three hardware pins (A0, A1, A2) vary the fixed I

C-bus address and allow up to eight

devices to share the same I

C-bus/SMBus. The PCA9554A is identical to the PCA9554

except that the fixed I

C-bus address is different allowing up to sixteen of these devices

(eight of each) on the same I

C-bus/SMBus.

2. Features and benefits



Operating power supply voltage range of 2.3 V to 5.5 V

5 V tolerant I/Os

Polarity Inversion register

Active LOW interrupt output

Low standby current

Noise filter on SCL/SDA inputs

No glitch on power-up

Internal power-on reset

8 I/O pins which default to 8 inputs

0 Hz to 400 kHz clock frequency

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