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PCAL6524HEAZ

Parallel I/O Port, 24 I/O, CMOS, PQCC32

Manufacturer:

NXP Semiconductor
Mfr.Part #:

PCAL6524HEAZ
Datasheet:

PCAL6524HEAZ Datasheet (PDF)
Programmable:

Not Verified
Number of I/O:

24
Interface:

I²C
Interrupt Output:

Yes
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PCAL6524HEAZ General Description

The PCAL6524 is a 24-bit general purpose I/O expander that provides remote I/O expansion for most microcontroller families via the Fast-mode Plus (Fm+) I2C-bus interface. The ultra low-voltage interface allows for direct connection to a microcontroller operating down to 0.8 V.

Key Features

 1 MHz Fast-mode Plus I2C-bus
 Operating power supply voltage range of 0.8 V to 3.6 V on the I2C-bus side
 Allows bidirectional voltage-level translation and GPIO expansion between 0.8 V to 3.6 V SCL/SDA and 1.8 V, 2.5 V, 3.3 V, 5.5 V Port P
 Low standby current consumption: 2.0 A typical at 3.3 V VDD(P)
 Schmitt trigger action allows slow input transition and better switching noise immunity at the SCL and SDA inputs
 Vhys = 0.05 V (typical) at 0.8 V
 Vhys = 0.18 V (typical) at 1.8 V
 Vhys = 0.33 V (typical) at 3.3 V
 5.5 V tolerant I/O ports and 3.6 V tolerant I2C-bus pins
 Active LOW reset input (RESET)
 Open-drain active LOW interrupt output (INT)
 Internal power-on reset
 Noise filter on SCL/SDA inputs
 Latched outputs with 25 mA drive maximum capability for directly driving LEDs
 Latch-up performance exceeds 100 mA per JESD 78, Class II
 ESD protection exceeds JESD 22
 2000 V Human-Body Model (A114-A)
 1000 V Charged-Device Model (C101)
 Packages offered: HUQFN32, VFBGA36

Application

Embedded Systems: Used to expand the number of available GPIO pins on microcontrollers, particularly in applications with limited pins.
Human-Machine Interfaces (HMI): In HMI devices like touchscreens and keypads where additional GPIO pins are required for user input.
Sensor Interfaces: To interface with multiple sensors and collect data through digital input pins.
LED Control: Managing and controlling LED displays or indicators with limited GPIO pins.
Automotive Electronics: In automotive applications for interfacing with various sensors, switches, and displays.
Industrial Automation: Used in industrial control systems, PLCs (Programmable Logic Controllers), and other automation equipment to expand digital I/O capabilities.
Consumer Electronics: In consumer devices that require additional GPIO pins for external connections or user interfaces.

Specifications

Category	Integrated Circuits (ICs)InterfaceI/O Expanders	Series	-
Programmable	Not Verified	Number of I/O	24
Interface	I²C	Interrupt Output	Yes
Features	POR	Output Type	Open Drain, Push-Pull
Current - Output Source/Sink	-	Clock Frequency	1 MHz
Voltage - Supply	1.65V ~ 5.5V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount	Base Product Number	PCAL6524
Product Category	Interface - I/O Expanders	Mounting Style	SMD/SMT
Interface Type	I2C, Serial, SMBus	Number of I/Os	24 I/O
Supply Voltage - Min	800 mV	Supply Voltage - Max	3.6 V
Maximum Clock Frequency	1 MHz	Minimum Operating Temperature	- 40 C
Maximum Operating Temperature	+ 85 C	ESD Protection	2 kV
Logic Family	PCAL6524	Operating Supply Current	200 mA
Operating Supply Voltage	800 mV to 3.6 V	Output Current	25 mA
Product	I/O Expanders	Product Type	I/O Expanders
Factory Pack Quantity	500	Subcategory	Interface ICs
Type	General Purpose	Part # Aliases	935305331147
Unit Weight	0.001444 oz