Ultra-Low-Voltage Translating 24-Bit Fm+ I²C-Bus/SMBus I/O Expander
Design Files
Receive the full breakdown. See the product footprint and more in the eCad file.
Ultra-Low-Voltage, Level Translating, 34-Bit I2C-Bus/SMBus I/O Expander
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.
Product Details
Features
Key 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
- 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 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)
GPIO Comparison Table
| Part Number | Bits | V Range | BW | Reset | Int | Description | Package Description | Type |
|---|---|---|---|---|---|---|---|---|
| PCAL6408A | 8 | 1.65 to 5.5 V | 400kHz | Dual VCC, 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 VCC, 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 |
Related products
Low-Voltage Translating, 8-Bit I²C-Bus/SMBus I/O Expander
16-Bit I²C-Bus and SMBus Low-Power I/O Port with Interrupt and Reset
Ultra-Low-Voltage, Level Translating, 34-Bit I2C-Bus/SMBus I/O Expander
40-Bit Fm+ I2C-Bus Advanced I/O Port with RESET, OE and INT
Buy/Parametrics
| | | | | |
|---|---|---|---|---|---|
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
Documentation
Quick reference to our documentation types.
3 documents
Compact List
Brochure (1)
-
Agile I/O GPIO Brochure[AGILE-IO-GPIO-BROCHURE]
Data Sheet (1)
Selector Guide (1)
-
NXP System Management I²C, I3C and SPI Selector Guide[I2CSELECTORBROC]
3 documents
Compact List
Brochure (1)
-
Agile I/O GPIO Brochure[AGILE-IO-GPIO-BROCHURE]
Data Sheet (1)
Selector Guide (1)
-
NXP System Management I²C, I3C and SPI Selector Guide[I2CSELECTORBROC]
Design Resources
Hardware
Quick reference to our
board types.
2 hardware offerings
-
Evaluation and Development BoardsPCAL6534 Evaluation Board
Active -
Evaluation and Development BoardsPCAL6534EV 34-Bit GPIO Arduino® Shield
Active
Engineering Services
To get further assistance directly from NXP, please see our Engineering Services.
1 engineering service
-
Independent Design House (IDH)
Embedded Software Design
To find additional partner offerings that support this product, visit our Partner Marketplace.
Training
Support
Recently viewed products
There are no recently viewed products to display.
