Interfaces
I²C, SPI, Serial Interface Devices
I²C General Purpose I/O
- PCA6408A
- PCA6416A
- PCA8574_74A
- PCA8575
- PCA9500
- PCA9501
- PCA9502BS
- PCA9505_06
- PCA9534
- PCA9535A
- PCA9535_PCA9535C
- PCA9536
- PCA9537DP
- PCA9538
- PCA9538A
- PCA9539A
- PCA9539_PCA9539R
- PCA9554B_PCA9554C
- PCA9554_PCA9554A
- PCA9555
- PCA9555A
- PCA9557
- PCA9570
- PCA9571
- PCA9574
- PCA9575
- PCA9621
- PCA9670BS
- PCA9670PW
- PCA9671
- PCA9672
- PCA9673
- PCA9674_PCA9674A
- PCA9675
- PCA9698
- 18 V tolerant SPI 16-bit/8-bit GPI with INT
- PCA9701_PCA9702
- PCA9703
- PCA9703HF
- PCA9704PW
- PCAL6408A
- PCAL6416A
- PCAL6416AEX
- PCAL6534
- PCAL9535A
- PCAL9538A
- PCAL9539A
- PCAL9554B; PCAL9554C
- PCAL9555A
- PCF8574_74A
- PCF8575
PCAL6534

PCAL6534: Ultra-low-voltage, level translating, 34-bit I²C-bus/SMBus I/O expander

Overview

The PCAL6534 is a 34-bit general-purpose I/O expander that provides remote I/O expansion for many 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.

The PCAL6534 includes level translating from the 1.65V to 5.5V I/O range and Agile I/O input latch, programmable output current, and integrated resistors. The benefits of the PCAL6534 are a wide voltage range for matching today’s lowest voltage FPGAs/processors and tiny package size, saving the cost and size of additional IOs in the processor. A GPIO expander such as the PCAL6534 can also simplify routing by pulling the I/Os for system management way from the processor, which may be densely packed with other critical functions.

The PCAL6534 is offered in a 2.6 mm x 3 mm VFBGA 42-pin package with 0.4 mm bump spacing.

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Features

Operating power supply voltage range of 0.8 V to 3.6 V on the I²C-bus
- Allows bidirectional voltage-level translation and GPIO expansion between 0.8 V to 3.6 V SCL/SDA and 1.8V, 2.5V, 3.3V, 5.5V I/O ports
Low standby current consumption: 2.0 µA 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
- V_hys = 0.05 V (typical) at 0.8 V
- V_hys = 0.18 V (typical) at 1.8 V
- V_hys = 0.33 V (typical) at 3.3 V
5.5 V tolerant I/O ports and 3.6 V tolerant I²C-bus lines
1MHz Fast-mode Plus I²C-bus
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)

MoreLess

Features

Operating power supply voltage range of 0.8 V to 3.6 V on the I²C-bus
- Allows bidirectional voltage-level translation and GPIO expansion between 0.8 V to 3.6 V SCL/SDA and 1.8V, 2.5V, 3.3V, 5.5V I/O ports
Low standby current consumption: 2.0 µA 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
- V_hys = 0.05 V (typical) at 0.8 V
- V_hys = 0.18 V (typical) at 1.8 V
- V_hys = 0.33 V (typical) at 3.3 V
5.5 V tolerant I/O ports and 3.6 V tolerant I²C-bus lines
1MHz Fast-mode Plus I²C-bus
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)

Data Sheets

Sample

PCAL6534 / 90-Second Crash Course

NXP’s Agile I/O and Plus Features

PCAL6534 / 90-Second Crash Course
NXP’s Agile I/O and Plus Features

PCAL6534 / 90-Second Crash Course

NXP’s Agile I/O and Plus Features

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Development Boards

OM13541:PCAL6534 Evaluation board

Development Boards

OM13541:PCAL6534 Evaluation board

Target Applications

Automotive

Automotive window control

Communication Infrastructure

Networking switches & routers

Industrial

IO buttons

Mobile

Consumer phones and game controllers

Similar Products

PCAL6524 : Ultra-low-voltage translating 24-bit Fm+ I²C-bus/SMBus I/O expander PCAL6408A : Low-voltage translating, 8-bit I²C-bus/SMBus I/O expander PCA9539_PCA9539R : 16-bit I²C-bus and SMBus low power I/O port with interrupt and reset PCAL6534: Ultra-low-voltage, level translating, 34-bit I²C-bus/SMBus I/O expander

PCAL6416A : Low-voltage translating 16-bit I²C-bus/SMBus I/O expander PCA9574 : 8-bit I²C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt PCA9698 : 40-bit Fm+ I2C-bus advanced I/O port with RESET, OE and INT

GPIO Comparison Table

Part Number	Bits	V Range	BW	Int	Description	Package Description	Type
PCAL6408A	8	1.65 to 5.5 V	400kHz		Dual V_CC, selectable open-drain or push pull outputs	HVQFN-16, TSSOP-16, XQFN-16, XFBGA-16, X2QFN-16	Agile IO
PCA9574	8	1.1 to 3.6 V	400kHz	maskable	Active low, 3 supplies for level translation, selectable open-drain	HVQFN-16, TSSOP-16	Standard
PCAL6416A	16	1.65 to 5.5 V	400kHz		Dual V_CC, selectable open-drain or push pull outputs	TSSOP-24, X2QFN-24, HWQFN-24, BGA-24	Agile IO
PCA9539R	16	2.3 to 5.5 V	400kHz		"R" version resets I²C-bus state machine	HVQFN-24, TSSOP-24	Standard
PCAL6524	24	0.8 to 5.5 V	1MHz		Read all interrupts without clear, device ID, SW reset	QFN-32, UFBGA-32	Agile IO
PCAL6534	34	0.8 to 5.5 V	1MHz		Read all interrupts without clear, device ID, SW reset	VFBGA-42	Agile IO
PCA9698	40	2.3 to 5.5 V	1MHz		Output enable, selectable open-drain	TSSOP-56, HVQFN-56	Standard

PCAL6534: Ultra-low-voltage, level translating, 34-bit I2C-bus/SMBus I/O expander

Overview

Features

PCAL6534 / 90-Second Crash Course

NXP’s Agile I/O and Plus Features

PCAL6534 / 90-Second Crash Course

NXP’s Agile I/O and Plus Features

Development Boards

Development Boards

Target Applications

Automotive

Communication Infrastructure

Industrial

Mobile

Similar Products

Similar Products

GPIO Comparison Table

PCAL6534: Ultra-low-voltage, level translating, 34-bit I²C-bus/SMBus I/O expander